/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/Problem16_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:26:24,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:26:24,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:26:24,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:26:24,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:26:24,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:26:24,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:26:24,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:26:24,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:26:24,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:26:24,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:26:24,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:26:24,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:26:24,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:26:24,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:26:24,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:26:24,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:26:24,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:26:24,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:26:24,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:26:24,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:26:24,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:26:24,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:26:24,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:26:24,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:26:24,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:26:24,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:26:24,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:26:24,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:26:24,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:26:24,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:26:24,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:26:24,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:26:24,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:26:24,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:26:24,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:26:24,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:26:24,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:26:24,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:26:24,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:26:24,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:26:24,736 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 13:26:24,823 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:26:24,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:26:24,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:26:24,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:26:24,826 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:26:24,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:26:24,829 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:26:24,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:26:24,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:26:24,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:26:24,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:26:24,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:26:24,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:26:24,830 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:26:24,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:26:24,831 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:26:24,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:26:24,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:26:24,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:26:24,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:26:24,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:26:24,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:26:24,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:26:24,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:26:24,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:26:24,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:26:24,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:26:24,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:26:24,835 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:26:24,835 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:26:25,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:26:25,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:26:25,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:26:25,312 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:26:25,313 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:26:25,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label49.c [2020-10-28 13:26:25,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70eba415b/9b769a2a4a784076a8b87f437971adbc/FLAGbddf68da8 [2020-10-28 13:26:26,351 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:26:26,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label49.c [2020-10-28 13:26:26,379 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70eba415b/9b769a2a4a784076a8b87f437971adbc/FLAGbddf68da8 [2020-10-28 13:26:26,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70eba415b/9b769a2a4a784076a8b87f437971adbc [2020-10-28 13:26:26,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:26:26,499 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:26:26,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:26:26,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:26:26,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:26:26,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:26:26" (1/1) ... [2020-10-28 13:26:26,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@608a81e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:26:26, skipping insertion in model container [2020-10-28 13:26:26,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:26:26" (1/1) ... [2020-10-28 13:26:26,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:26:26,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:26:27,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:26:27,505 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:26:27,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:26:27,849 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:26:27,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:26:27 WrapperNode [2020-10-28 13:26:27,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:26:27,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:26:27,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:26:27,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:26:27,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:26:27" (1/1) ... [2020-10-28 13:26:27,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:26:27" (1/1) ... [2020-10-28 13:26:27,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:26:27" (1/1) ... [2020-10-28 13:26:27,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:26:27" (1/1) ... [2020-10-28 13:26:27,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:26:27" (1/1) ... [2020-10-28 13:26:27,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:26:27" (1/1) ... [2020-10-28 13:26:28,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:26:27" (1/1) ... [2020-10-28 13:26:28,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:26:28,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:26:28,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:26:28,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:26:28,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:26:27" (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 13:26:28,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:26:28,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:26:28,153 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:26:28,154 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:26:28,154 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:26:28,155 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:26:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:26:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:26:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:26:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:26:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:26:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:26:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:26:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:26:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:26:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:26:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:26:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:26:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:26:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:26:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:26:30,867 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:26:30,867 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:26:30,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:26:30 BoogieIcfgContainer [2020-10-28 13:26:30,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:26:30,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:26:30,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:26:30,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:26:30,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:26:26" (1/3) ... [2020-10-28 13:26:30,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba56df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:26:30, skipping insertion in model container [2020-10-28 13:26:30,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:26:27" (2/3) ... [2020-10-28 13:26:30,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba56df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:26:30, skipping insertion in model container [2020-10-28 13:26:30,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:26:30" (3/3) ... [2020-10-28 13:26:30,880 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label49.c [2020-10-28 13:26:30,894 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:26:30,900 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:26:30,915 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:26:30,948 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:26:30,949 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:26:30,949 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:26:30,949 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:26:30,949 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:26:30,949 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:26:30,949 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:26:30,950 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:26:30,983 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-28 13:26:30,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 13:26:30,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:26:30,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:26:30,995 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:26:31,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:26:31,002 INFO L82 PathProgramCache]: Analyzing trace with hash -340250524, now seen corresponding path program 1 times [2020-10-28 13:26:31,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:26:31,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035548914] [2020-10-28 13:26:31,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:26:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:31,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:31,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:31,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:26:31,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:31,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-10-28 13:26:31,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:31,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:31,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:26:31,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:26:31,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 13:26:31,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:26:31,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:26:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:32,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:32,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:32,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:26:32,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:32,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:26:32,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:32,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:32,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:26:32,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:32,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:26:32,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:26:32,062 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 13:26:32,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035548914] [2020-10-28 13:26:32,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:26:32,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:26:32,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584526948] [2020-10-28 13:26:32,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:26:32,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:26:32,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:26:32,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:26:32,096 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-28 13:26:37,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:26:37,205 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-28 13:26:37,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:26:37,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-28 13:26:37,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:26:37,248 INFO L225 Difference]: With dead ends: 1174 [2020-10-28 13:26:37,249 INFO L226 Difference]: Without dead ends: 697 [2020-10-28 13:26:37,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:26:37,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-28 13:26:37,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-28 13:26:37,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-28 13:26:37,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-28 13:26:37,428 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 67 [2020-10-28 13:26:37,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:26:37,429 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-28 13:26:37,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:26:37,429 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-28 13:26:37,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-28 13:26:37,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:26:37,437 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:26:37,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:26:37,437 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:26:37,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:26:37,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1540042715, now seen corresponding path program 1 times [2020-10-28 13:26:37,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:26:37,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009311713] [2020-10-28 13:26:37,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:26:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:37,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:38,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:38,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:39,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:39,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-28 13:26:39,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:26:39,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1530 [2020-10-28 13:26:39,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:39,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:39,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:26:39,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:26:39,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:26:39,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 13:26:39,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:26:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:39,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:39,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:39,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:26:39,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:39,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:26:39,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:39,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:39,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:26:39,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:39,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:26:39,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 13:26:39,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:26:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:39,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:39,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:39,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:26:39,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:39,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-28 13:26:39,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:39,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:39,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:39,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:26:39,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:26:39,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:26:39,575 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:26:39,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009311713] [2020-10-28 13:26:39,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:26:39,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:26:39,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494488930] [2020-10-28 13:26:39,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:26:39,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:26:39,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:26:39,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:26:39,583 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 7 states. [2020-10-28 13:26:47,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:26:47,850 INFO L93 Difference]: Finished difference Result 2090 states and 3102 transitions. [2020-10-28 13:26:47,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:26:47,851 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2020-10-28 13:26:47,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:26:47,863 INFO L225 Difference]: With dead ends: 2090 [2020-10-28 13:26:47,864 INFO L226 Difference]: Without dead ends: 1403 [2020-10-28 13:26:47,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:26:47,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2020-10-28 13:26:47,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1379. [2020-10-28 13:26:47,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1379 states. [2020-10-28 13:26:47,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1813 transitions. [2020-10-28 13:26:47,934 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1813 transitions. Word has length 143 [2020-10-28 13:26:47,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:26:47,937 INFO L481 AbstractCegarLoop]: Abstraction has 1379 states and 1813 transitions. [2020-10-28 13:26:47,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:26:47,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1813 transitions. [2020-10-28 13:26:47,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-28 13:26:47,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:26:47,951 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:26:47,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:26:47,951 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:26:47,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:26:47,955 INFO L82 PathProgramCache]: Analyzing trace with hash -91938922, now seen corresponding path program 1 times [2020-10-28 13:26:47,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:26:47,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564816190] [2020-10-28 13:26:47,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:26:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:48,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:48,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:48,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:49,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:49,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:51,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:51,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:53,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:53,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:26:53,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 13:26:53,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 13:26:53,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:53,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:53,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:26:53,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:26:53,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 13:26:53,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:26:53,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:26:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:53,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:53,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:53,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:26:53,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:53,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:26:53,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:53,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:53,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:53,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:53,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:53,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:53,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:26:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:53,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:53,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:53,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:26:53,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:53,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 13:26:53,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:53,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:26:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:26:53,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:53,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:26:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:53,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:53,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:53,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:53,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:26:53,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:26:53,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 13:26:53,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:53,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:53,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:53,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:26:53,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:26:53,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:53,665 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 126 proven. 59 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:26:53,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564816190] [2020-10-28 13:26:53,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:26:53,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:26:53,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407447789] [2020-10-28 13:26:53,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:26:53,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:26:53,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:26:53,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:26:53,676 INFO L87 Difference]: Start difference. First operand 1379 states and 1813 transitions. Second operand 6 states. [2020-10-28 13:26:59,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:26:59,536 INFO L93 Difference]: Finished difference Result 3485 states and 4759 transitions. [2020-10-28 13:26:59,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:26:59,537 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 230 [2020-10-28 13:26:59,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:26:59,549 INFO L225 Difference]: With dead ends: 3485 [2020-10-28 13:26:59,550 INFO L226 Difference]: Without dead ends: 2112 [2020-10-28 13:26:59,554 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 13:26:59,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2020-10-28 13:26:59,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 2093. [2020-10-28 13:26:59,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2093 states. [2020-10-28 13:26:59,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2093 states to 2093 states and 2638 transitions. [2020-10-28 13:26:59,621 INFO L78 Accepts]: Start accepts. Automaton has 2093 states and 2638 transitions. Word has length 230 [2020-10-28 13:26:59,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:26:59,622 INFO L481 AbstractCegarLoop]: Abstraction has 2093 states and 2638 transitions. [2020-10-28 13:26:59,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:26:59,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states and 2638 transitions. [2020-10-28 13:26:59,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-28 13:26:59,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:26:59,628 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:26:59,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:26:59,629 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:26:59,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:26:59,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1676055384, now seen corresponding path program 1 times [2020-10-28 13:26:59,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:26:59,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871237669] [2020-10-28 13:26:59,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:26:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:59,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:59,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:01,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:03,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:03,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:27:03,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:27:03,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3996 [2020-10-28 13:27:03,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:03,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:03,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:03,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:27:03,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:27:03,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:27:03,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:27:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:03,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:03,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:03,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:27:03,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:03,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:27:03,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:03,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:03,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:03,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:03,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:03,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:03,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:27:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:03,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:03,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:03,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:27:03,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:03,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 13:27:03,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:03,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:27:03,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:04,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 13:27:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:04,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:04,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:04,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:27:04,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:04,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-28 13:27:04,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:04,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:04,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:04,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:04,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:27:04,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:04,488 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:27:04,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871237669] [2020-10-28 13:27:04,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:27:04,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:27:04,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661571833] [2020-10-28 13:27:04,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:27:04,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:27:04,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:27:04,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:27:04,492 INFO L87 Difference]: Start difference. First operand 2093 states and 2638 transitions. Second operand 7 states. [2020-10-28 13:27:12,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:27:12,617 INFO L93 Difference]: Finished difference Result 5618 states and 7252 transitions. [2020-10-28 13:27:12,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:27:12,618 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 296 [2020-10-28 13:27:12,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:27:12,646 INFO L225 Difference]: With dead ends: 5618 [2020-10-28 13:27:12,647 INFO L226 Difference]: Without dead ends: 3531 [2020-10-28 13:27:12,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:27:12,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3531 states. [2020-10-28 13:27:12,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3531 to 3502. [2020-10-28 13:27:12,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3502 states. [2020-10-28 13:27:12,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3502 states to 3502 states and 4413 transitions. [2020-10-28 13:27:12,789 INFO L78 Accepts]: Start accepts. Automaton has 3502 states and 4413 transitions. Word has length 296 [2020-10-28 13:27:12,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:27:12,793 INFO L481 AbstractCegarLoop]: Abstraction has 3502 states and 4413 transitions. [2020-10-28 13:27:12,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:27:12,793 INFO L276 IsEmpty]: Start isEmpty. Operand 3502 states and 4413 transitions. [2020-10-28 13:27:12,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-28 13:27:12,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:27:12,801 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:27:12,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:27:12,801 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:27:12,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:27:12,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1899127783, now seen corresponding path program 1 times [2020-10-28 13:27:12,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:27:12,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970591634] [2020-10-28 13:27:12,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:27:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:12,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:13,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:13,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:17,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:17,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-28 13:27:17,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:27:17,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 13:27:17,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:17,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:17,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:27:17,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:27:17,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-28 13:27:17,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:27:18,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:27:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:18,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:18,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:18,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:27:18,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:18,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:27:18,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:18,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:18,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:18,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:18,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:27:18,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:18,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:27:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:18,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:18,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:18,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:27:18,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:18,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-28 13:27:18,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:18,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:18,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:27:18,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:19,355 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:27:19,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970591634] [2020-10-28 13:27:19,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:27:19,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:27:19,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399139028] [2020-10-28 13:27:19,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:27:19,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:27:19,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:27:19,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:27:19,358 INFO L87 Difference]: Start difference. First operand 3502 states and 4413 transitions. Second operand 7 states. [2020-10-28 13:27:24,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:27:24,866 INFO L93 Difference]: Finished difference Result 7066 states and 8926 transitions. [2020-10-28 13:27:24,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:27:24,867 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 316 [2020-10-28 13:27:24,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:27:24,889 INFO L225 Difference]: With dead ends: 7066 [2020-10-28 13:27:24,889 INFO L226 Difference]: Without dead ends: 3570 [2020-10-28 13:27:24,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:27:24,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3570 states. [2020-10-28 13:27:24,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3570 to 3525. [2020-10-28 13:27:24,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3525 states. [2020-10-28 13:27:25,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 4438 transitions. [2020-10-28 13:27:25,010 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 4438 transitions. Word has length 316 [2020-10-28 13:27:25,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:27:25,011 INFO L481 AbstractCegarLoop]: Abstraction has 3525 states and 4438 transitions. [2020-10-28 13:27:25,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:27:25,011 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 4438 transitions. [2020-10-28 13:27:25,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-28 13:27:25,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:27:25,020 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:27:25,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:27:25,020 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:27:25,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:27:25,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1013814751, now seen corresponding path program 1 times [2020-10-28 13:27:25,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:27:25,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134276841] [2020-10-28 13:27:25,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:27:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:25,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:25,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:25,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:26,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:26,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:26,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:28,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:30,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:30,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-28 13:27:30,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 13:27:30,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 13:27:30,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:30,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:30,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:27:30,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:27:30,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-28 13:27:30,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:30,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:27:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:30,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:30,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:30,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:27:30,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:30,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:27:30,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:30,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:30,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:30,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:27:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:30,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:30,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:30,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:27:30,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:30,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 13:27:30,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:30,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:30,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:30,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:30,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:27:30,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:30,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:27:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:30,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:30,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:30,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:30,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:27:30,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:27:30,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 13:27:30,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:30,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:30,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:30,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:30,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 13:27:30,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:30,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-28 13:27:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:30,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:30,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:30,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 13:27:30,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:30,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 13:27:30,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:30,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:30,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:30,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:30,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 13:27:30,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:30,913 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 345 proven. 4 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 13:27:30,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134276841] [2020-10-28 13:27:30,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:27:30,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:27:30,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24542224] [2020-10-28 13:27:30,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:27:30,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:27:30,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:27:30,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:27:30,918 INFO L87 Difference]: Start difference. First operand 3525 states and 4438 transitions. Second operand 7 states. [2020-10-28 13:27:36,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:27:36,880 INFO L93 Difference]: Finished difference Result 9160 states and 12004 transitions. [2020-10-28 13:27:36,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:27:36,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 339 [2020-10-28 13:27:36,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:27:36,904 INFO L225 Difference]: With dead ends: 9160 [2020-10-28 13:27:36,904 INFO L226 Difference]: Without dead ends: 4201 [2020-10-28 13:27:36,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:27:36,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4201 states. [2020-10-28 13:27:37,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4201 to 4167. [2020-10-28 13:27:37,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4167 states. [2020-10-28 13:27:37,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4167 states to 4167 states and 4637 transitions. [2020-10-28 13:27:37,032 INFO L78 Accepts]: Start accepts. Automaton has 4167 states and 4637 transitions. Word has length 339 [2020-10-28 13:27:37,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:27:37,032 INFO L481 AbstractCegarLoop]: Abstraction has 4167 states and 4637 transitions. [2020-10-28 13:27:37,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:27:37,033 INFO L276 IsEmpty]: Start isEmpty. Operand 4167 states and 4637 transitions. [2020-10-28 13:27:37,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-10-28 13:27:37,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:27:37,042 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:27:37,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:27:37,043 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:27:37,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:27:37,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1594699592, now seen corresponding path program 1 times [2020-10-28 13:27:37,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:27:37,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597743190] [2020-10-28 13:27:37,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:27:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:37,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:37,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:37,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:42,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:42,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-10-28 13:27:42,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:27:42,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 13:27:42,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:42,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:27:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:27:42,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:42,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:27:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:42,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:42,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:42,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:27:42,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:42,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:27:42,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:42,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:42,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:42,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:27:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:42,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:42,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:42,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:27:42,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:42,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 13:27:42,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:42,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:42,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:42,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:42,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:27:42,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:42,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 13:27:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:42,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:42,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:42,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:27:42,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:42,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-28 13:27:42,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:42,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:42,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:42,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:42,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:27:42,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:43,350 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:27:43,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597743190] [2020-10-28 13:27:43,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:27:43,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:27:43,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311151814] [2020-10-28 13:27:43,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:27:43,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:27:43,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:27:43,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:27:43,353 INFO L87 Difference]: Start difference. First operand 4167 states and 4637 transitions. Second operand 7 states. [2020-10-28 13:27:48,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:27:48,086 INFO L93 Difference]: Finished difference Result 11436 states and 12980 transitions. [2020-10-28 13:27:48,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:27:48,087 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 416 [2020-10-28 13:27:48,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:27:48,118 INFO L225 Difference]: With dead ends: 11436 [2020-10-28 13:27:48,119 INFO L226 Difference]: Without dead ends: 7275 [2020-10-28 13:27:48,130 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 13:27:48,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7275 states. [2020-10-28 13:27:48,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7275 to 7261. [2020-10-28 13:27:48,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7261 states. [2020-10-28 13:27:48,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7261 states to 7261 states and 8064 transitions. [2020-10-28 13:27:48,308 INFO L78 Accepts]: Start accepts. Automaton has 7261 states and 8064 transitions. Word has length 416 [2020-10-28 13:27:48,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:27:48,308 INFO L481 AbstractCegarLoop]: Abstraction has 7261 states and 8064 transitions. [2020-10-28 13:27:48,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:27:48,309 INFO L276 IsEmpty]: Start isEmpty. Operand 7261 states and 8064 transitions. [2020-10-28 13:27:48,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2020-10-28 13:27:48,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:27:48,329 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-28 13:27:48,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:27:48,329 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:27:48,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:27:48,330 INFO L82 PathProgramCache]: Analyzing trace with hash -505126817, now seen corresponding path program 1 times [2020-10-28 13:27:48,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:27:48,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553387990] [2020-10-28 13:27:48,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:27:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:48,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:48,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:49,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:52,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:52,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 647 [2020-10-28 13:27:52,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:27:52,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3946 [2020-10-28 13:27:52,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:52,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:52,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:52,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 413 [2020-10-28 13:27:52,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:27:52,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:52,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:27:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:52,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:52,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:52,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:27:52,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:52,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:27:52,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:52,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:52,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:52,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:52,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:52,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:52,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:27:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:52,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:52,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:52,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:27:52,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:52,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:27:52,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:52,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:52,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:52,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:52,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:52,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:52,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:27:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:52,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:52,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:52,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:27:52,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:52,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 13:27:52,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:52,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:52,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:52,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:52,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-28 13:27:52,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:52,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:27:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:52,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:53,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:53,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:27:53,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:53,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 13:27:53,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:53,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:53,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:53,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:53,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:27:53,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:53,404 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 501 proven. 2 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2020-10-28 13:27:53,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553387990] [2020-10-28 13:27:53,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:27:53,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:27:53,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456519681] [2020-10-28 13:27:53,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:27:53,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:27:53,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:27:53,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:27:53,407 INFO L87 Difference]: Start difference. First operand 7261 states and 8064 transitions. Second operand 7 states. [2020-10-28 13:27:57,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:27:57,878 INFO L93 Difference]: Finished difference Result 15886 states and 17915 transitions. [2020-10-28 13:27:57,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:27:57,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 631 [2020-10-28 13:27:57,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:27:57,916 INFO L225 Difference]: With dead ends: 15886 [2020-10-28 13:27:57,916 INFO L226 Difference]: Without dead ends: 8968 [2020-10-28 13:27:57,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:27:57,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8968 states. [2020-10-28 13:27:58,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8968 to 8962. [2020-10-28 13:27:58,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8962 states. [2020-10-28 13:27:58,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8962 states to 8962 states and 9882 transitions. [2020-10-28 13:27:58,135 INFO L78 Accepts]: Start accepts. Automaton has 8962 states and 9882 transitions. Word has length 631 [2020-10-28 13:27:58,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:27:58,136 INFO L481 AbstractCegarLoop]: Abstraction has 8962 states and 9882 transitions. [2020-10-28 13:27:58,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:27:58,136 INFO L276 IsEmpty]: Start isEmpty. Operand 8962 states and 9882 transitions. [2020-10-28 13:27:58,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2020-10-28 13:27:58,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:27:58,147 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:27:58,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:27:58,147 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:27:58,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:27:58,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1565858778, now seen corresponding path program 1 times [2020-10-28 13:27:58,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:27:58,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042178317] [2020-10-28 13:27:58,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:27:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:58,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:58,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:00,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:00,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:03,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:03,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 684 [2020-10-28 13:28:03,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:28:03,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 13:28:03,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:03,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:03,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:03,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:28:03,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-28 13:28:03,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:03,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:03,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:03,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:03,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:03,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:03,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:28:03,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:03,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:03,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:03,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:03,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:03,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:03,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:28:03,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:03,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-28 13:28:03,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:03,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:03,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:03,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:03,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:28:03,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:03,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:28:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:03,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:03,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:03,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:28:03,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:03,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 13:28:03,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:03,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:03,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:03,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:03,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 13:28:03,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:04,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:28:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:04,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:04,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:04,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:28:04,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:04,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 13:28:04,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:04,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:04,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:04,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-28 13:28:04,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:04,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:04,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:28:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:04,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:04,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:04,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:28:04,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:04,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:28:04,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:04,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:28:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:04,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:04,584 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 403 proven. 194 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2020-10-28 13:28:04,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042178317] [2020-10-28 13:28:04,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:04,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:28:04,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63872635] [2020-10-28 13:28:04,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:28:04,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:04,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:28:04,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:28:04,588 INFO L87 Difference]: Start difference. First operand 8962 states and 9882 transitions. Second operand 7 states. [2020-10-28 13:28:09,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:28:09,298 INFO L93 Difference]: Finished difference Result 19283 states and 21380 transitions. [2020-10-28 13:28:09,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:28:09,299 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 666 [2020-10-28 13:28:09,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:28:09,334 INFO L225 Difference]: With dead ends: 19283 [2020-10-28 13:28:09,335 INFO L226 Difference]: Without dead ends: 10664 [2020-10-28 13:28:09,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:28:09,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10664 states. [2020-10-28 13:28:09,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10664 to 10323. [2020-10-28 13:28:09,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10323 states. [2020-10-28 13:28:09,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10323 states to 10323 states and 11270 transitions. [2020-10-28 13:28:09,627 INFO L78 Accepts]: Start accepts. Automaton has 10323 states and 11270 transitions. Word has length 666 [2020-10-28 13:28:09,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:28:09,629 INFO L481 AbstractCegarLoop]: Abstraction has 10323 states and 11270 transitions. [2020-10-28 13:28:09,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:28:09,629 INFO L276 IsEmpty]: Start isEmpty. Operand 10323 states and 11270 transitions. [2020-10-28 13:28:09,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2020-10-28 13:28:09,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:09,643 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:28:09,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:28:09,643 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:09,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:09,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1370679469, now seen corresponding path program 1 times [2020-10-28 13:28:09,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:09,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776894380] [2020-10-28 13:28:09,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:09,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:10,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:12,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:12,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 708 [2020-10-28 13:28:12,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:28:12,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2671 [2020-10-28 13:28:12,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:12,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:12,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:12,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-28 13:28:12,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:28:12,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:12,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:12,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:12,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:12,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:12,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:12,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:28:12,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:12,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:12,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:12,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:12,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:12,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:12,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:12,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:12,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:12,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:28:12,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:12,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 13:28:12,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:12,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:12,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:12,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:12,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:12,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:12,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:28:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:13,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:13,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:13,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:28:13,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:13,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-28 13:28:13,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:13,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:13,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:13,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:13,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-28 13:28:13,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:13,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:28:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:13,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:13,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:13,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:28:13,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:13,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-28 13:28:13,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:13,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:13,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:13,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:13,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:28:13,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:14,159 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 502 proven. 2 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-28 13:28:14,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776894380] [2020-10-28 13:28:14,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:14,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:28:14,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620618273] [2020-10-28 13:28:14,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:28:14,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:14,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:28:14,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:28:14,162 INFO L87 Difference]: Start difference. First operand 10323 states and 11270 transitions. Second operand 7 states. [2020-10-28 13:28:20,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:28:20,536 INFO L93 Difference]: Finished difference Result 23702 states and 26008 transitions. [2020-10-28 13:28:20,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:28:20,541 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 692 [2020-10-28 13:28:20,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:28:20,589 INFO L225 Difference]: With dead ends: 23702 [2020-10-28 13:28:20,590 INFO L226 Difference]: Without dead ends: 13722 [2020-10-28 13:28:20,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:28:20,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13722 states. [2020-10-28 13:28:20,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13722 to 13385. [2020-10-28 13:28:20,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13385 states. [2020-10-28 13:28:20,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13385 states to 13385 states and 14545 transitions. [2020-10-28 13:28:20,928 INFO L78 Accepts]: Start accepts. Automaton has 13385 states and 14545 transitions. Word has length 692 [2020-10-28 13:28:20,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:28:20,929 INFO L481 AbstractCegarLoop]: Abstraction has 13385 states and 14545 transitions. [2020-10-28 13:28:20,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:28:20,929 INFO L276 IsEmpty]: Start isEmpty. Operand 13385 states and 14545 transitions. [2020-10-28 13:28:20,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2020-10-28 13:28:20,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:20,942 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:28:20,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:28:20,942 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:20,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:20,944 INFO L82 PathProgramCache]: Analyzing trace with hash 915720425, now seen corresponding path program 1 times [2020-10-28 13:28:20,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:20,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584179845] [2020-10-28 13:28:20,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:21,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:22,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:22,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 710 [2020-10-28 13:28:22,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:22,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 924 [2020-10-28 13:28:22,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:22,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-28 13:28:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 13:28:22,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:22,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:22,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:22,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:22,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:22,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:22,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:28:22,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:22,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:22,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:22,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:22,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:22,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:28:22,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:22,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:22,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:22,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:28:22,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:22,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 13:28:22,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:22,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:22,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:22,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:28:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:22,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:22,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:22,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:28:22,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:22,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 13:28:22,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:22,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:22,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:22,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:22,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:22,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:22,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:28:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:22,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:22,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:22,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:28:22,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:22,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 13:28:22,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:22,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:22,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:22,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:22,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 13:28:22,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:23,161 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 180 proven. 3 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2020-10-28 13:28:23,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584179845] [2020-10-28 13:28:23,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:23,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:28:23,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453817852] [2020-10-28 13:28:23,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:28:23,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:23,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:28:23,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:28:23,164 INFO L87 Difference]: Start difference. First operand 13385 states and 14545 transitions. Second operand 5 states. [2020-10-28 13:28:27,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:28:27,325 INFO L93 Difference]: Finished difference Result 27101 states and 29638 transitions. [2020-10-28 13:28:27,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:28:27,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 694 [2020-10-28 13:28:27,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:28:27,379 INFO L225 Difference]: With dead ends: 27101 [2020-10-28 13:28:27,379 INFO L226 Difference]: Without dead ends: 14400 [2020-10-28 13:28:27,412 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 13:28:27,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14400 states. [2020-10-28 13:28:27,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14400 to 14400. [2020-10-28 13:28:27,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14400 states. [2020-10-28 13:28:27,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14400 states to 14400 states and 15639 transitions. [2020-10-28 13:28:27,782 INFO L78 Accepts]: Start accepts. Automaton has 14400 states and 15639 transitions. Word has length 694 [2020-10-28 13:28:27,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:28:27,784 INFO L481 AbstractCegarLoop]: Abstraction has 14400 states and 15639 transitions. [2020-10-28 13:28:27,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:28:27,784 INFO L276 IsEmpty]: Start isEmpty. Operand 14400 states and 15639 transitions. [2020-10-28 13:28:27,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2020-10-28 13:28:27,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:27,804 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:28:27,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:28:27,804 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:27,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:27,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1330475603, now seen corresponding path program 1 times [2020-10-28 13:28:27,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:27,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483572995] [2020-10-28 13:28:27,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:28,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:28,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:30,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:30,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 736 [2020-10-28 13:28:30,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:28:30,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2910 [2020-10-28 13:28:30,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:30,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:30,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:30,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-28 13:28:30,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:28:30,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:31,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:31,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:31,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:31,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:31,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:31,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:28:31,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:31,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:31,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:31,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:31,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:31,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:31,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:31,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:31,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:31,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:28:31,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:31,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 13:28:31,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:31,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:31,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:31,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:31,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:31,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:31,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:28:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:31,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:31,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:31,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 13:28:31,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:31,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 13:28:31,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:31,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:31,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:31,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:31,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-28 13:28:31,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:31,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-28 13:28:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:31,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:31,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:31,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:28:31,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:31,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-28 13:28:31,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:31,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:31,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:31,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:31,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:28:31,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:32,369 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 580 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-28 13:28:32,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483572995] [2020-10-28 13:28:32,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:32,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:28:32,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023091692] [2020-10-28 13:28:32,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:28:32,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:32,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:28:32,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:28:32,371 INFO L87 Difference]: Start difference. First operand 14400 states and 15639 transitions. Second operand 7 states. [2020-10-28 13:28:38,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:28:38,543 INFO L93 Difference]: Finished difference Result 28452 states and 30934 transitions. [2020-10-28 13:28:38,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:28:38,549 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 720 [2020-10-28 13:28:38,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:28:38,592 INFO L225 Difference]: With dead ends: 28452 [2020-10-28 13:28:38,592 INFO L226 Difference]: Without dead ends: 14736 [2020-10-28 13:28:38,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:28:38,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14736 states. [2020-10-28 13:28:38,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14736 to 14399. [2020-10-28 13:28:38,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14399 states. [2020-10-28 13:28:38,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14399 states to 14399 states and 15388 transitions. [2020-10-28 13:28:38,875 INFO L78 Accepts]: Start accepts. Automaton has 14399 states and 15388 transitions. Word has length 720 [2020-10-28 13:28:38,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:28:38,877 INFO L481 AbstractCegarLoop]: Abstraction has 14399 states and 15388 transitions. [2020-10-28 13:28:38,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:28:38,877 INFO L276 IsEmpty]: Start isEmpty. Operand 14399 states and 15388 transitions. [2020-10-28 13:28:38,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2020-10-28 13:28:38,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:38,890 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:28:38,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:28:38,891 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:38,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:38,891 INFO L82 PathProgramCache]: Analyzing trace with hash -335757108, now seen corresponding path program 1 times [2020-10-28 13:28:38,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:38,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943489209] [2020-10-28 13:28:38,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:39,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:39,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:39,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:42,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:44,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:44,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 745 [2020-10-28 13:28:44,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:28:44,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-28 13:28:44,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:44,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:44,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:28:44,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 605 [2020-10-28 13:28:44,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 13:28:44,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:44,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:44,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:44,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:44,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:44,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:44,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:28:44,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:44,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:44,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:44,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:44,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:44,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:44,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:44,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:44,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:44,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:28:44,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:44,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 13:28:44,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:44,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:44,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:44,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:44,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:44,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:44,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:28:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:44,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:44,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:44,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:28:44,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:44,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:28:44,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:44,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:44,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:44,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:44,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:44,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:44,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:28:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:44,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:44,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:44,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:28:44,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:44,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 13:28:44,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:44,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:44,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:44,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:44,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:28:44,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:44,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:28:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:44,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:44,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:44,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:44,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:28:44,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:28:44,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 13:28:44,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:44,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:44,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:44,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:44,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 13:28:44,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:45,045 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 250 proven. 4 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2020-10-28 13:28:45,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943489209] [2020-10-28 13:28:45,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:45,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:28:45,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934816436] [2020-10-28 13:28:45,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:28:45,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:45,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:28:45,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:28:45,048 INFO L87 Difference]: Start difference. First operand 14399 states and 15388 transitions. Second operand 5 states. [2020-10-28 13:28:48,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:28:48,641 INFO L93 Difference]: Finished difference Result 30475 states and 32660 transitions. [2020-10-28 13:28:48,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:28:48,642 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 727 [2020-10-28 13:28:48,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:28:48,684 INFO L225 Difference]: With dead ends: 30475 [2020-10-28 13:28:48,684 INFO L226 Difference]: Without dead ends: 16760 [2020-10-28 13:28:48,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 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 13:28:48,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16760 states. [2020-10-28 13:28:48,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16760 to 16760. [2020-10-28 13:28:48,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16760 states. [2020-10-28 13:28:49,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16760 states to 16760 states and 17855 transitions. [2020-10-28 13:28:49,007 INFO L78 Accepts]: Start accepts. Automaton has 16760 states and 17855 transitions. Word has length 727 [2020-10-28 13:28:49,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:28:49,008 INFO L481 AbstractCegarLoop]: Abstraction has 16760 states and 17855 transitions. [2020-10-28 13:28:49,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:28:49,009 INFO L276 IsEmpty]: Start isEmpty. Operand 16760 states and 17855 transitions. [2020-10-28 13:28:49,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1262 [2020-10-28 13:28:49,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:49,048 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:28:49,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:28:49,049 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:49,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:49,049 INFO L82 PathProgramCache]: Analyzing trace with hash -623641060, now seen corresponding path program 1 times [2020-10-28 13:28:49,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:49,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952066832] [2020-10-28 13:28:49,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:49,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:49,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:49,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:50,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:54,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:54,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1287 [2020-10-28 13:28:54,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:28:54,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-28 13:28:54,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:54,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:54,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:54,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 676 [2020-10-28 13:28:54,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-28 13:28:54,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:54,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:54,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:54,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:54,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:54,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:54,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:28:54,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:54,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:54,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:54,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:54,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:54,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:54,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:54,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:54,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:54,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:28:54,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:54,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:28:54,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:54,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:54,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:54,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:54,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:54,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:54,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:28:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:54,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:54,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:54,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:28:54,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:54,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:28:54,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:54,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:54,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:54,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:54,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:54,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:54,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:28:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:54,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:54,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:54,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:28:54,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:54,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:28:54,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:54,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:54,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:54,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:54,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:54,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:54,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:28:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:54,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:54,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:54,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:28:54,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:54,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:28:54,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:54,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:54,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:54,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:54,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 13:28:54,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:54,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-28 13:28:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:54,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:55,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:55,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:28:55,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:55,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-28 13:28:55,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:55,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:55,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:55,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:55,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-28 13:28:55,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:55,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 812 [2020-10-28 13:28:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:55,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:55,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:55,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:28:55,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:55,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 13:28:55,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:55,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:55,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:55,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 13:28:55,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:55,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:55,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 954 [2020-10-28 13:28:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:55,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:55,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:55,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:28:55,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:55,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:28:55,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:55,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:55,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:55,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:28:55,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:55,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:55,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1064 [2020-10-28 13:28:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:55,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:55,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:55,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 13:28:55,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:55,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:28:55,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:55,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:55,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:55,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 13:28:55,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:55,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:56,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3749 backedges. 1009 proven. 383 refuted. 0 times theorem prover too weak. 2357 trivial. 0 not checked. [2020-10-28 13:28:56,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952066832] [2020-10-28 13:28:56,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:56,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:28:56,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008397611] [2020-10-28 13:28:56,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:28:56,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:56,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:28:56,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:28:56,422 INFO L87 Difference]: Start difference. First operand 16760 states and 17855 transitions. Second operand 7 states. [2020-10-28 13:29:02,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:02,129 INFO L93 Difference]: Finished difference Result 35876 states and 38369 transitions. [2020-10-28 13:29:02,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:29:02,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1261 [2020-10-28 13:29:02,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:02,176 INFO L225 Difference]: With dead ends: 35876 [2020-10-28 13:29:02,176 INFO L226 Difference]: Without dead ends: 19800 [2020-10-28 13:29:02,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:29:02,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19800 states. [2020-10-28 13:29:02,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19800 to 19126. [2020-10-28 13:29:02,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19126 states. [2020-10-28 13:29:02,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19126 states to 19126 states and 20360 transitions. [2020-10-28 13:29:02,570 INFO L78 Accepts]: Start accepts. Automaton has 19126 states and 20360 transitions. Word has length 1261 [2020-10-28 13:29:02,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:02,571 INFO L481 AbstractCegarLoop]: Abstraction has 19126 states and 20360 transitions. [2020-10-28 13:29:02,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:29:02,572 INFO L276 IsEmpty]: Start isEmpty. Operand 19126 states and 20360 transitions. [2020-10-28 13:29:02,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1310 [2020-10-28 13:29:02,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:02,616 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:29:02,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:29:02,616 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:02,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:02,617 INFO L82 PathProgramCache]: Analyzing trace with hash -324810709, now seen corresponding path program 1 times [2020-10-28 13:29:02,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:02,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511074548] [2020-10-28 13:29:02,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:03,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:03,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:03,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:07,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:07,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:07,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1333 [2020-10-28 13:29:07,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:29:07,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 13:29:07,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:07,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:07,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:07,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 802 [2020-10-28 13:29:07,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:29:07,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:08,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:08,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:08,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:08,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:08,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:08,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:29:08,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:08,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:08,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:08,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:08,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:08,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:08,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:29:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:08,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:08,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:08,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:29:08,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:08,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 13:29:08,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:08,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:08,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:08,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:08,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:08,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:08,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:29:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:08,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:08,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:08,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:29:08,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:08,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 13:29:08,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:08,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:08,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:08,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:08,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:08,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:08,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:29:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:08,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:08,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:08,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:29:08,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:08,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:29:08,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:08,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:08,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:08,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:08,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:08,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:08,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:29:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:08,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:08,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:08,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:29:08,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:08,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 13:29:08,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:08,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:08,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:08,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:08,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 13:29:08,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:08,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-28 13:29:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:08,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:09,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:09,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:29:09,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:09,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-28 13:29:09,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:09,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:09,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:09,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:09,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:29:09,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:09,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-28 13:29:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:09,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:09,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:09,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:29:09,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:09,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:29:09,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:09,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:29:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:09,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:09,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1179 [2020-10-28 13:29:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:09,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:09,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:09,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:29:09,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:09,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:29:09,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:09,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:09,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:09,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:29:09,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:09,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:10,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3185 backedges. 1234 proven. 179 refuted. 0 times theorem prover too weak. 1772 trivial. 0 not checked. [2020-10-28 13:29:10,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511074548] [2020-10-28 13:29:10,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:29:10,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:29:10,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637495568] [2020-10-28 13:29:10,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:29:10,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:10,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:29:10,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:29:10,849 INFO L87 Difference]: Start difference. First operand 19126 states and 20360 transitions. Second operand 7 states. [2020-10-28 13:29:15,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:15,709 INFO L93 Difference]: Finished difference Result 37574 states and 40042 transitions. [2020-10-28 13:29:15,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:29:15,710 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1309 [2020-10-28 13:29:15,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:15,748 INFO L225 Difference]: With dead ends: 37574 [2020-10-28 13:29:15,749 INFO L226 Difference]: Without dead ends: 19132 [2020-10-28 13:29:15,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 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 13:29:15,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19132 states. [2020-10-28 13:29:16,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19132 to 19126. [2020-10-28 13:29:16,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19126 states. [2020-10-28 13:29:16,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19126 states to 19126 states and 20348 transitions. [2020-10-28 13:29:16,094 INFO L78 Accepts]: Start accepts. Automaton has 19126 states and 20348 transitions. Word has length 1309 [2020-10-28 13:29:16,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:16,095 INFO L481 AbstractCegarLoop]: Abstraction has 19126 states and 20348 transitions. [2020-10-28 13:29:16,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:29:16,095 INFO L276 IsEmpty]: Start isEmpty. Operand 19126 states and 20348 transitions. [2020-10-28 13:29:16,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1342 [2020-10-28 13:29:16,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:16,137 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 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 13:29:16,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:29:16,137 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:16,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:16,138 INFO L82 PathProgramCache]: Analyzing trace with hash 135890994, now seen corresponding path program 1 times [2020-10-28 13:29:16,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:16,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947209086] [2020-10-28 13:29:16,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:16,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:16,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:17,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:17,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:21,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:21,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1367 [2020-10-28 13:29:21,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:29:21,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-28 13:29:21,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:21,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:21,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:21,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 794 [2020-10-28 13:29:21,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-28 13:29:21,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:21,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:21,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:21,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:21,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:21,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:21,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:29:21,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:21,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:21,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:21,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:29:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:21,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:21,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:21,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:29:21,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:21,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-28 13:29:21,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:21,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:21,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:21,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:21,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:21,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:22,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:29:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:22,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:22,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:22,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:29:22,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:22,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 13:29:22,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:22,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:22,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:22,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:22,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:22,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:22,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:29:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:22,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:22,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:22,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:29:22,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:22,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:29:22,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:22,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:22,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:22,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:22,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:22,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:22,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:29:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:22,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:22,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:22,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:29:22,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:22,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:29:22,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:22,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:22,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:22,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:22,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:22,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:22,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-28 13:29:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:22,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:22,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:22,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:29:22,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:22,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:29:22,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:22,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:22,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:22,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:22,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:29:22,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:22,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-28 13:29:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:22,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:22,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:22,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:29:22,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:22,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-28 13:29:22,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:22,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:22,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:22,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:22,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-28 13:29:22,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:22,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1034 [2020-10-28 13:29:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:22,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:22,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:22,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:29:22,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:22,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:29:22,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:22,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:22,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:22,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:29:22,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:22,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:22,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1144 [2020-10-28 13:29:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:23,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:23,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:23,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 13:29:23,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:23,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 13:29:23,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:23,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:23,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:23,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 13:29:23,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:23,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:24,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3812 backedges. 1293 proven. 244 refuted. 0 times theorem prover too weak. 2275 trivial. 0 not checked. [2020-10-28 13:29:24,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947209086] [2020-10-28 13:29:24,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:29:24,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:29:24,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139707368] [2020-10-28 13:29:24,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:29:24,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:24,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:29:24,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:29:24,399 INFO L87 Difference]: Start difference. First operand 19126 states and 20348 transitions. Second operand 7 states. [2020-10-28 13:29:29,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:29,236 INFO L93 Difference]: Finished difference Result 38244 states and 40694 transitions. [2020-10-28 13:29:29,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:29:29,238 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1341 [2020-10-28 13:29:29,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:29,271 INFO L225 Difference]: With dead ends: 38244 [2020-10-28 13:29:29,272 INFO L226 Difference]: Without dead ends: 19802 [2020-10-28 13:29:29,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:29:29,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19802 states. [2020-10-28 13:29:29,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19802 to 19802. [2020-10-28 13:29:29,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19802 states. [2020-10-28 13:29:29,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19802 states to 19802 states and 21023 transitions. [2020-10-28 13:29:29,697 INFO L78 Accepts]: Start accepts. Automaton has 19802 states and 21023 transitions. Word has length 1341 [2020-10-28 13:29:29,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:29,699 INFO L481 AbstractCegarLoop]: Abstraction has 19802 states and 21023 transitions. [2020-10-28 13:29:29,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:29:29,699 INFO L276 IsEmpty]: Start isEmpty. Operand 19802 states and 21023 transitions. [2020-10-28 13:29:29,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1378 [2020-10-28 13:29:29,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:29,920 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:29:29,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 13:29:29,920 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:29,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:29,921 INFO L82 PathProgramCache]: Analyzing trace with hash -580758468, now seen corresponding path program 1 times [2020-10-28 13:29:29,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:29,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601370654] [2020-10-28 13:29:29,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:30,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:30,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:34,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:35,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:35,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1403 [2020-10-28 13:29:35,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:29:35,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-28 13:29:35,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:35,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:35,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:35,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1194 [2020-10-28 13:29:35,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-28 13:29:35,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:35,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:35,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:35,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:35,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:35,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:35,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:29:35,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:35,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:35,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:35,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:35,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:35,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:35,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:29:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:35,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:35,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:35,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:29:35,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:35,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 13:29:35,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:35,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:35,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:35,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:35,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:35,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:35,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:29:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:35,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:35,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:35,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 13:29:35,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:35,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 13:29:35,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:35,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:35,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:35,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-28 13:29:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:35,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:35,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:35,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 13:29:35,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:35,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:29:35,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:35,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:35,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:35,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:35,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:35,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:35,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-28 13:29:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:35,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:35,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:35,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 13:29:35,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:35,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:29:35,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:35,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:35,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:35,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:35,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:35,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:35,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-28 13:29:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:35,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:36,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:36,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:29:36,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:36,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:29:36,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:36,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:36,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:36,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:36,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:36,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:36,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 928 [2020-10-28 13:29:36,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:36,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:36,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:36,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:29:36,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:36,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:29:36,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:36,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:36,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:36,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1070 [2020-10-28 13:29:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:36,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:36,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:36,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:29:36,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:36,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 13:29:36,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:36,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:36,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:36,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:36,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 13:29:36,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:36,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1180 [2020-10-28 13:29:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:36,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:36,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:36,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 13:29:36,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:36,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-28 13:29:36,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:36,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:36,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:36,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:36,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 13:29:36,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:37,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4348 backedges. 1419 proven. 2 refuted. 0 times theorem prover too weak. 2927 trivial. 0 not checked. [2020-10-28 13:29:37,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601370654] [2020-10-28 13:29:37,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:29:37,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:29:37,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779864118] [2020-10-28 13:29:37,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:29:37,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:37,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:29:37,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:29:37,559 INFO L87 Difference]: Start difference. First operand 19802 states and 21023 transitions. Second operand 7 states. [2020-10-28 13:29:42,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:42,637 INFO L93 Difference]: Finished difference Result 40972 states and 43668 transitions. [2020-10-28 13:29:42,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:29:42,639 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1377 [2020-10-28 13:29:42,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:42,676 INFO L225 Difference]: With dead ends: 40972 [2020-10-28 13:29:42,676 INFO L226 Difference]: Without dead ends: 19807 [2020-10-28 13:29:42,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 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 13:29:42,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19807 states. [2020-10-28 13:29:43,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19807 to 19777. [2020-10-28 13:29:43,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19777 states. [2020-10-28 13:29:43,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19777 states to 19777 states and 20688 transitions. [2020-10-28 13:29:43,054 INFO L78 Accepts]: Start accepts. Automaton has 19777 states and 20688 transitions. Word has length 1377 [2020-10-28 13:29:43,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:43,056 INFO L481 AbstractCegarLoop]: Abstraction has 19777 states and 20688 transitions. [2020-10-28 13:29:43,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:29:43,056 INFO L276 IsEmpty]: Start isEmpty. Operand 19777 states and 20688 transitions. [2020-10-28 13:29:43,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2187 [2020-10-28 13:29:43,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:43,127 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:29:43,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 13:29:43,128 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:43,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:43,129 INFO L82 PathProgramCache]: Analyzing trace with hash -954424728, now seen corresponding path program 1 times [2020-10-28 13:29:43,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:43,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523910429] [2020-10-28 13:29:43,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:43,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:44,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:45,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking...