/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem11_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:51:23,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:51:23,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:51:23,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:51:23,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:51:23,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:51:23,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:51:23,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:51:23,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:51:23,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:51:23,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:51:23,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:51:23,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:51:23,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:51:23,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:51:23,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:51:23,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:51:23,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:51:23,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:51:23,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:51:23,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:51:23,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:51:23,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:51:23,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:51:23,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:51:23,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:51:23,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:51:23,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:51:23,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:51:23,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:51:23,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:51:23,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:51:23,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:51:23,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:51:23,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:51:24,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:51:24,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:51:24,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:51:24,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:51:24,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:51:24,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:51:24,008 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 [2020-10-29 06:51:24,039 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:51:24,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:51:24,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:51:24,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:51:24,041 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:51:24,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:51:24,042 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:51:24,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:51:24,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:51:24,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:51:24,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:51:24,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:51:24,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:51:24,043 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:51:24,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:51:24,044 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:51:24,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:51:24,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:51:24,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:51:24,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:51:24,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:51:24,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:51:24,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:51:24,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:51:24,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:51:24,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:51:24,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:51:24,047 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:51:24,047 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:51:24,047 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:51:24,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:51:24,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:51:24,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:51:24,527 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:51:24,528 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:51:24,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label53.c [2020-10-29 06:51:24,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bdc2463b/6fa296fe2ce44df084c43b5d7f1523c6/FLAGdd6f28f15 [2020-10-29 06:51:25,443 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:51:25,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label53.c [2020-10-29 06:51:25,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bdc2463b/6fa296fe2ce44df084c43b5d7f1523c6/FLAGdd6f28f15 [2020-10-29 06:51:25,604 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bdc2463b/6fa296fe2ce44df084c43b5d7f1523c6 [2020-10-29 06:51:25,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:51:25,614 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:51:25,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:51:25,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:51:25,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:51:25,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:51:25" (1/1) ... [2020-10-29 06:51:25,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@154514ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:25, skipping insertion in model container [2020-10-29 06:51:25,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:51:25" (1/1) ... [2020-10-29 06:51:25,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:51:25,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:51:26,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:51:26,384 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:51:26,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:51:26,566 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:51:26,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:26 WrapperNode [2020-10-29 06:51:26,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:51:26,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:51:26,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:51:26,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:51:26,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:26" (1/1) ... [2020-10-29 06:51:26,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:26" (1/1) ... [2020-10-29 06:51:26,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:26" (1/1) ... [2020-10-29 06:51:26,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:26" (1/1) ... [2020-10-29 06:51:26,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:26" (1/1) ... [2020-10-29 06:51:26,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:26" (1/1) ... [2020-10-29 06:51:26,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:26" (1/1) ... [2020-10-29 06:51:26,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:51:26,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:51:26,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:51:26,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:51:26,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:26" (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 [2020-10-29 06:51:26,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:51:26,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:51:26,851 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:51:26,851 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:51:26,851 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:51:26,852 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:51:26,852 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:51:26,852 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:51:26,852 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:51:26,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:51:26,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:51:26,853 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:51:26,853 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:51:26,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:51:26,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:51:26,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:51:26,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:51:26,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:51:26,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:51:28,813 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:51:28,813 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:51:28,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:51:28 BoogieIcfgContainer [2020-10-29 06:51:28,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:51:28,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:51:28,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:51:28,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:51:28,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:51:25" (1/3) ... [2020-10-29 06:51:28,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a70a2d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:51:28, skipping insertion in model container [2020-10-29 06:51:28,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:51:26" (2/3) ... [2020-10-29 06:51:28,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a70a2d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:51:28, skipping insertion in model container [2020-10-29 06:51:28,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:51:28" (3/3) ... [2020-10-29 06:51:28,825 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label53.c [2020-10-29 06:51:28,838 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:51:28,844 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:51:28,858 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:51:28,888 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:51:28,889 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:51:28,889 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:51:28,889 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:51:28,889 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:51:28,889 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:51:28,890 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:51:28,890 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:51:28,914 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-29 06:51:28,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 06:51:28,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:28,924 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] [2020-10-29 06:51:28,925 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:28,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:28,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1093185656, now seen corresponding path program 1 times [2020-10-29 06:51:28,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:28,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189763363] [2020-10-29 06:51:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:29,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:29,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:29,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 06:51:29,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:29,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-10-29 06:51:29,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:29,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:29,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:51:29,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:51:29,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 06:51:29,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:51:30,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:30,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:30,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:30,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:30,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:30,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 06:51:30,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:30,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:30,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:30,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:30,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:51:30,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:51:30,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189763363] [2020-10-29 06:51:30,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:51:30,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 06:51:30,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404419150] [2020-10-29 06:51:30,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 06:51:30,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:30,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 06:51:30,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 06:51:30,287 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-29 06:51:33,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:33,583 INFO L93 Difference]: Finished difference Result 811 states and 1410 transitions. [2020-10-29 06:51:33,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:51:33,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-29 06:51:33,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:33,602 INFO L225 Difference]: With dead ends: 811 [2020-10-29 06:51:33,603 INFO L226 Difference]: Without dead ends: 435 [2020-10-29 06:51:33,613 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 [2020-10-29 06:51:33,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-29 06:51:33,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 429. [2020-10-29 06:51:33,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-10-29 06:51:33,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 618 transitions. [2020-10-29 06:51:33,702 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 618 transitions. Word has length 54 [2020-10-29 06:51:33,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:33,702 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 618 transitions. [2020-10-29 06:51:33,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 06:51:33,703 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 618 transitions. [2020-10-29 06:51:33,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 06:51:33,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:33,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:33,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:51:33,715 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:33,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:33,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1239417524, now seen corresponding path program 1 times [2020-10-29 06:51:33,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:33,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017030475] [2020-10-29 06:51:33,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:33,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:33,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:34,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:35,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:36,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:36,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 06:51:36,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:51:36,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2356 [2020-10-29 06:51:36,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:36,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:36,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:51:36,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:51:36,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 06:51:36,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:36,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:36,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:36,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:36,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:36,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:36,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 06:51:36,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:36,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:36,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:36,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:36,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:51:36,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:51:36,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:36,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:36,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:36,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:51:36,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:36,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 06:51:36,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:36,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 06:51:36,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:36,700 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:51:36,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017030475] [2020-10-29 06:51:36,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:51:36,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 06:51:36,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309844138] [2020-10-29 06:51:36,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:51:36,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:36,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:51:36,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:51:36,708 INFO L87 Difference]: Start difference. First operand 429 states and 618 transitions. Second operand 8 states. [2020-10-29 06:51:41,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:41,523 INFO L93 Difference]: Finished difference Result 1663 states and 2474 transitions. [2020-10-29 06:51:41,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:51:41,526 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 126 [2020-10-29 06:51:41,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:41,537 INFO L225 Difference]: With dead ends: 1663 [2020-10-29 06:51:41,538 INFO L226 Difference]: Without dead ends: 1240 [2020-10-29 06:51:41,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-29 06:51:41,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2020-10-29 06:51:41,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1204. [2020-10-29 06:51:41,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1204 states. [2020-10-29 06:51:41,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1687 transitions. [2020-10-29 06:51:41,648 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1687 transitions. Word has length 126 [2020-10-29 06:51:41,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:41,649 INFO L481 AbstractCegarLoop]: Abstraction has 1204 states and 1687 transitions. [2020-10-29 06:51:41,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:51:41,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1687 transitions. [2020-10-29 06:51:41,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-29 06:51:41,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:41,655 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:41,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:51:41,655 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:41,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:41,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1533024540, now seen corresponding path program 1 times [2020-10-29 06:51:41,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:41,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047685835] [2020-10-29 06:51:41,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:41,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:41,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:42,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:43,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:43,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 06:51:43,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:51:43,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1878 [2020-10-29 06:51:43,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:43,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:43,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:51:43,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:51:43,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 06:51:43,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:43,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:43,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:43,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:43,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:43,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:43,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 06:51:43,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:43,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:43,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:43,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:43,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:51:43,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:43,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:43,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:44,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:44,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 06:51:44,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:44,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-29 06:51:44,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:44,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:44,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:44,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:44,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 06:51:44,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:44,188 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:51:44,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047685835] [2020-10-29 06:51:44,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:51:44,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:51:44,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580553197] [2020-10-29 06:51:44,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:51:44,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:44,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:51:44,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:51:44,195 INFO L87 Difference]: Start difference. First operand 1204 states and 1687 transitions. Second operand 7 states. [2020-10-29 06:51:47,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:47,414 INFO L93 Difference]: Finished difference Result 3414 states and 4971 transitions. [2020-10-29 06:51:47,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:51:47,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-10-29 06:51:47,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:47,432 INFO L225 Difference]: With dead ends: 3414 [2020-10-29 06:51:47,432 INFO L226 Difference]: Without dead ends: 2216 [2020-10-29 06:51:47,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:51:47,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2020-10-29 06:51:47,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 1990. [2020-10-29 06:51:47,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1990 states. [2020-10-29 06:51:47,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 2623 transitions. [2020-10-29 06:51:47,539 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 2623 transitions. Word has length 151 [2020-10-29 06:51:47,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:47,540 INFO L481 AbstractCegarLoop]: Abstraction has 1990 states and 2623 transitions. [2020-10-29 06:51:47,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:51:47,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 2623 transitions. [2020-10-29 06:51:47,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-29 06:51:47,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:47,545 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:51:47,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:51:47,545 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:47,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:47,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1213310945, now seen corresponding path program 1 times [2020-10-29 06:51:47,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:47,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081597360] [2020-10-29 06:51:47,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:47,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:47,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:49,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:49,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 06:51:49,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:51:49,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2050 [2020-10-29 06:51:49,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:49,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:49,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:51:49,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:51:49,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 06:51:49,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:49,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:49,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:49,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:49,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:49,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:49,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 06:51:49,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:49,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:49,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:49,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:49,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:51:49,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:49,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:49,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:50,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:50,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:51:50,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:50,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-29 06:51:50,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:50,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:50,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:50,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:50,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:51:50,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:51:50,578 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:51:50,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081597360] [2020-10-29 06:51:50,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:51:50,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:51:50,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907159949] [2020-10-29 06:51:50,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:51:50,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:50,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:51:50,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:51:50,585 INFO L87 Difference]: Start difference. First operand 1990 states and 2623 transitions. Second operand 7 states. [2020-10-29 06:51:53,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:51:53,498 INFO L93 Difference]: Finished difference Result 4389 states and 5753 transitions. [2020-10-29 06:51:53,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:51:53,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-10-29 06:51:53,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:51:53,516 INFO L225 Difference]: With dead ends: 4389 [2020-10-29 06:51:53,517 INFO L226 Difference]: Without dead ends: 2405 [2020-10-29 06:51:53,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:51:53,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2405 states. [2020-10-29 06:51:53,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2405 to 2390. [2020-10-29 06:51:53,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2390 states. [2020-10-29 06:51:53,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 3092 transitions. [2020-10-29 06:51:53,622 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 3092 transitions. Word has length 164 [2020-10-29 06:51:53,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:51:53,622 INFO L481 AbstractCegarLoop]: Abstraction has 2390 states and 3092 transitions. [2020-10-29 06:51:53,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:51:53,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 3092 transitions. [2020-10-29 06:51:53,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-29 06:51:53,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:51:53,628 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:51:53,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:51:53,629 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:51:53,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:51:53,629 INFO L82 PathProgramCache]: Analyzing trace with hash -629895686, now seen corresponding path program 1 times [2020-10-29 06:51:53,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:51:53,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046672581] [2020-10-29 06:51:53,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:51:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:53,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:53,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:54,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:55,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:56,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:56,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-29 06:51:56,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:51:56,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3070 [2020-10-29 06:51:56,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:56,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:56,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:51:56,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:51:56,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-29 06:51:56,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:56,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:51:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:56,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:56,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:56,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:51:56,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:56,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:51:56,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:56,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:56,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:51:56,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:56,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:51:56,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:56,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:51:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:57,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:57,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:57,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:51:57,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:57,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-29 06:51:57,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:57,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:57,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:51:57,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:51:57,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:51:57,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:57,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:51:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:51:57,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:51:57,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:51:57,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:51:57,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:51:57,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 06:51:57,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:51:57,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:51:57,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:51:57,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:51:57,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:51:57,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:51:57,470 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 121 proven. 46 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 06:51:57,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046672581] [2020-10-29 06:51:57,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:51:57,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:51:57,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549639061] [2020-10-29 06:51:57,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:51:57,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:51:57,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:51:57,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:51:57,473 INFO L87 Difference]: Start difference. First operand 2390 states and 3092 transitions. Second operand 6 states. [2020-10-29 06:52:00,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:00,671 INFO L93 Difference]: Finished difference Result 5405 states and 7270 transitions. [2020-10-29 06:52:00,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:52:00,674 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 250 [2020-10-29 06:52:00,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:00,698 INFO L225 Difference]: With dead ends: 5405 [2020-10-29 06:52:00,699 INFO L226 Difference]: Without dead ends: 3399 [2020-10-29 06:52:00,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:52:00,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3399 states. [2020-10-29 06:52:00,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3399 to 3377. [2020-10-29 06:52:00,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3377 states. [2020-10-29 06:52:00,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 4428 transitions. [2020-10-29 06:52:00,816 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 4428 transitions. Word has length 250 [2020-10-29 06:52:00,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:00,819 INFO L481 AbstractCegarLoop]: Abstraction has 3377 states and 4428 transitions. [2020-10-29 06:52:00,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:52:00,819 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 4428 transitions. [2020-10-29 06:52:00,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-29 06:52:00,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:00,828 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, 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] [2020-10-29 06:52:00,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:52:00,828 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:00,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:00,829 INFO L82 PathProgramCache]: Analyzing trace with hash 118013611, now seen corresponding path program 1 times [2020-10-29 06:52:00,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:00,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135475225] [2020-10-29 06:52:00,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:00,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:01,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:03,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:03,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-29 06:52:03,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:03,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2255 [2020-10-29 06:52:03,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:03,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:03,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:03,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-29 06:52:03,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 06:52:03,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:03,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:03,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:03,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:03,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:03,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:03,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:52:03,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:03,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:03,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:03,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:03,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:03,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:03,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:03,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:03,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:03,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:52:03,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:03,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 06:52:03,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:03,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:03,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:03,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:03,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:03,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:03,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:52:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:03,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:03,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:03,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 06:52:03,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:03,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 06:52:03,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:03,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:03,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:03,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:03,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 06:52:03,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:03,659 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-29 06:52:03,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135475225] [2020-10-29 06:52:03,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:03,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:52:03,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245417369] [2020-10-29 06:52:03,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:52:03,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:03,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:52:03,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:52:03,664 INFO L87 Difference]: Start difference. First operand 3377 states and 4428 transitions. Second operand 5 states. [2020-10-29 06:52:06,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:06,634 INFO L93 Difference]: Finished difference Result 6958 states and 9220 transitions. [2020-10-29 06:52:06,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:52:06,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 255 [2020-10-29 06:52:06,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:06,667 INFO L225 Difference]: With dead ends: 6958 [2020-10-29 06:52:06,667 INFO L226 Difference]: Without dead ends: 3965 [2020-10-29 06:52:06,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:52:06,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3965 states. [2020-10-29 06:52:06,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3965 to 3957. [2020-10-29 06:52:06,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3957 states. [2020-10-29 06:52:06,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3957 states to 3957 states and 5151 transitions. [2020-10-29 06:52:06,806 INFO L78 Accepts]: Start accepts. Automaton has 3957 states and 5151 transitions. Word has length 255 [2020-10-29 06:52:06,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:06,807 INFO L481 AbstractCegarLoop]: Abstraction has 3957 states and 5151 transitions. [2020-10-29 06:52:06,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:52:06,807 INFO L276 IsEmpty]: Start isEmpty. Operand 3957 states and 5151 transitions. [2020-10-29 06:52:06,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-29 06:52:06,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:06,815 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:52:06,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:52:06,816 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:06,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:06,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1649477274, now seen corresponding path program 1 times [2020-10-29 06:52:06,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:06,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786822648] [2020-10-29 06:52:06,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:06,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:07,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:07,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:09,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:09,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 06:52:09,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:52:09,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2145 [2020-10-29 06:52:09,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:09,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:09,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:09,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-29 06:52:09,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 06:52:09,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:09,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:09,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:09,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:09,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:09,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:09,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:52:09,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:09,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:09,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:09,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:09,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:09,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:09,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:09,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:09,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:09,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:52:09,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:09,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-29 06:52:09,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:09,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:09,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:09,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:09,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 06:52:09,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:09,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:52:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:09,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:09,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:09,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:52:09,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:09,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-29 06:52:09,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:09,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:09,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:09,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:09,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:52:09,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:52:09,956 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:52:09,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786822648] [2020-10-29 06:52:09,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:09,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:52:09,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037602220] [2020-10-29 06:52:09,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:52:09,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:09,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:52:09,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:52:09,960 INFO L87 Difference]: Start difference. First operand 3957 states and 5151 transitions. Second operand 7 states. [2020-10-29 06:52:14,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:14,577 INFO L93 Difference]: Finished difference Result 8717 states and 11860 transitions. [2020-10-29 06:52:14,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:52:14,578 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2020-10-29 06:52:14,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:14,605 INFO L225 Difference]: With dead ends: 8717 [2020-10-29 06:52:14,606 INFO L226 Difference]: Without dead ends: 5144 [2020-10-29 06:52:14,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:52:14,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5144 states. [2020-10-29 06:52:14,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5144 to 5130. [2020-10-29 06:52:14,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5130 states. [2020-10-29 06:52:14,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5130 states to 5130 states and 6752 transitions. [2020-10-29 06:52:14,764 INFO L78 Accepts]: Start accepts. Automaton has 5130 states and 6752 transitions. Word has length 260 [2020-10-29 06:52:14,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:14,764 INFO L481 AbstractCegarLoop]: Abstraction has 5130 states and 6752 transitions. [2020-10-29 06:52:14,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:52:14,764 INFO L276 IsEmpty]: Start isEmpty. Operand 5130 states and 6752 transitions. [2020-10-29 06:52:14,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-29 06:52:14,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:14,773 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:52:14,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:52:14,773 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:14,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:14,774 INFO L82 PathProgramCache]: Analyzing trace with hash 518754426, now seen corresponding path program 1 times [2020-10-29 06:52:14,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:14,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599138388] [2020-10-29 06:52:14,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:14,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:15,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:15,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:15,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-29 06:52:15,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:15,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 867 [2020-10-29 06:52:15,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:15,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:15,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:15,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-29 06:52:15,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 06:52:15,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:15,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:15,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:15,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:15,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:15,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:15,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:52:15,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:15,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:15,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:15,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:15,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:15,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:15,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:15,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:15,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:15,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:52:15,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:15,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 06:52:15,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:15,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:15,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:15,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:15,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:15,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:16,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:52:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:16,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:16,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:16,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 06:52:16,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:16,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 06:52:16,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:16,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:16,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:16,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:16,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 06:52:16,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:16,254 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-29 06:52:16,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599138388] [2020-10-29 06:52:16,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:16,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:52:16,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658041143] [2020-10-29 06:52:16,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:52:16,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:16,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:52:16,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:52:16,256 INFO L87 Difference]: Start difference. First operand 5130 states and 6752 transitions. Second operand 5 states. [2020-10-29 06:52:19,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:19,285 INFO L93 Difference]: Finished difference Result 10462 states and 13835 transitions. [2020-10-29 06:52:19,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:52:19,288 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 281 [2020-10-29 06:52:19,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:19,320 INFO L225 Difference]: With dead ends: 10462 [2020-10-29 06:52:19,320 INFO L226 Difference]: Without dead ends: 5716 [2020-10-29 06:52:19,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:52:19,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5716 states. [2020-10-29 06:52:19,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5716 to 5332. [2020-10-29 06:52:19,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5332 states. [2020-10-29 06:52:19,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5332 states to 5332 states and 7008 transitions. [2020-10-29 06:52:19,494 INFO L78 Accepts]: Start accepts. Automaton has 5332 states and 7008 transitions. Word has length 281 [2020-10-29 06:52:19,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:19,495 INFO L481 AbstractCegarLoop]: Abstraction has 5332 states and 7008 transitions. [2020-10-29 06:52:19,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:52:19,495 INFO L276 IsEmpty]: Start isEmpty. Operand 5332 states and 7008 transitions. [2020-10-29 06:52:19,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-29 06:52:19,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:19,505 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:52:19,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 06:52:19,505 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:19,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:19,506 INFO L82 PathProgramCache]: Analyzing trace with hash 918871741, now seen corresponding path program 1 times [2020-10-29 06:52:19,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:19,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629472568] [2020-10-29 06:52:19,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:19,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:19,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:21,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:21,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:21,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-29 06:52:21,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:52:21,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2396 [2020-10-29 06:52:21,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:21,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:21,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:52:21,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:52:21,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-29 06:52:21,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:22,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:22,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:22,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:22,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:22,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:22,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:52:22,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:22,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:22,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:52:22,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:22,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:52:22,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:22,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:22,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:22,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:22,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:52:22,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:22,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 06:52:22,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:22,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:22,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:22,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:22,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:52:22,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:52:22,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:52:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:22,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:22,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:22,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:22,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 06:52:22,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:22,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-29 06:52:22,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:22,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 06:52:22,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:23,022 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 90 proven. 4 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-29 06:52:23,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629472568] [2020-10-29 06:52:23,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:23,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:52:23,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459908036] [2020-10-29 06:52:23,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:52:23,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:23,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:52:23,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:52:23,033 INFO L87 Difference]: Start difference. First operand 5332 states and 7008 transitions. Second operand 6 states. [2020-10-29 06:52:25,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:25,802 INFO L93 Difference]: Finished difference Result 10282 states and 13602 transitions. [2020-10-29 06:52:25,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:52:25,803 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 292 [2020-10-29 06:52:25,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:25,835 INFO L225 Difference]: With dead ends: 10282 [2020-10-29 06:52:25,835 INFO L226 Difference]: Without dead ends: 5334 [2020-10-29 06:52:25,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:52:25,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5334 states. [2020-10-29 06:52:26,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5334 to 5328. [2020-10-29 06:52:26,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5328 states. [2020-10-29 06:52:26,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5328 states to 5328 states and 6664 transitions. [2020-10-29 06:52:26,031 INFO L78 Accepts]: Start accepts. Automaton has 5328 states and 6664 transitions. Word has length 292 [2020-10-29 06:52:26,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:26,032 INFO L481 AbstractCegarLoop]: Abstraction has 5328 states and 6664 transitions. [2020-10-29 06:52:26,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:52:26,032 INFO L276 IsEmpty]: Start isEmpty. Operand 5328 states and 6664 transitions. [2020-10-29 06:52:26,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-29 06:52:26,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:26,047 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:52:26,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 06:52:26,048 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:26,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:26,049 INFO L82 PathProgramCache]: Analyzing trace with hash -252275030, now seen corresponding path program 1 times [2020-10-29 06:52:26,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:26,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736877150] [2020-10-29 06:52:26,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:26,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:26,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:26,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:26,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:27,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:28,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:31,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:31,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-29 06:52:31,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 06:52:31,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 06:52:31,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:31,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:31,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:52:31,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:52:31,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-29 06:52:31,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:31,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:31,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:31,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:31,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:31,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:31,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 06:52:31,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:31,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:31,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:31,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:31,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:52:31,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:31,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:31,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:31,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:31,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:52:31,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:31,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-29 06:52:31,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:31,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 06:52:31,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:31,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:52:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:31,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:32,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:32,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:52:32,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:32,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-29 06:52:32,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:32,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:32,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:52:32,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:32,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:52:32,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:32,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-29 06:52:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:32,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:32,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:32,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:32,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:52:32,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:32,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-29 06:52:32,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:32,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:32,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:32,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:32,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:52:32,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:32,582 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 140 proven. 218 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 06:52:32,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736877150] [2020-10-29 06:52:32,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:32,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 06:52:32,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014228079] [2020-10-29 06:52:32,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 06:52:32,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:32,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 06:52:32,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:52:32,585 INFO L87 Difference]: Start difference. First operand 5328 states and 6664 transitions. Second operand 11 states. [2020-10-29 06:52:34,345 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-29 06:52:37,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:37,518 INFO L93 Difference]: Finished difference Result 12079 states and 16053 transitions. [2020-10-29 06:52:37,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 06:52:37,519 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 323 [2020-10-29 06:52:37,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:37,551 INFO L225 Difference]: With dead ends: 12079 [2020-10-29 06:52:37,551 INFO L226 Difference]: Without dead ends: 7105 [2020-10-29 06:52:37,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2020-10-29 06:52:37,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7105 states. [2020-10-29 06:52:37,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7105 to 6912. [2020-10-29 06:52:37,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6912 states. [2020-10-29 06:52:37,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6912 states to 6912 states and 8636 transitions. [2020-10-29 06:52:37,763 INFO L78 Accepts]: Start accepts. Automaton has 6912 states and 8636 transitions. Word has length 323 [2020-10-29 06:52:37,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:37,764 INFO L481 AbstractCegarLoop]: Abstraction has 6912 states and 8636 transitions. [2020-10-29 06:52:37,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 06:52:37,764 INFO L276 IsEmpty]: Start isEmpty. Operand 6912 states and 8636 transitions. [2020-10-29 06:52:37,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-29 06:52:37,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:37,780 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:52:37,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 06:52:37,781 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:37,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:37,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1792083850, now seen corresponding path program 1 times [2020-10-29 06:52:37,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:37,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521357225] [2020-10-29 06:52:37,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:37,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:38,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:38,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:39,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:40,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:42,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:42,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-29 06:52:42,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:52:42,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-29 06:52:42,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:42,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:42,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:52:42,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:52:42,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-29 06:52:42,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:43,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:43,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:43,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:43,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:43,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:43,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 06:52:43,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:43,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:43,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:43,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:43,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:52:43,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:52:43,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:43,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:43,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:43,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:52:43,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:43,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 06:52:43,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:43,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:43,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:43,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:43,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 06:52:43,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:43,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:52:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:43,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:43,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:43,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:52:43,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:43,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-29 06:52:43,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:43,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:43,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:52:43,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:43,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:52:43,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:43,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-29 06:52:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:43,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:43,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:43,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:52:43,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:43,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 06:52:43,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:43,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:43,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:43,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:43,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:52:43,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 147 proven. 152 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-29 06:52:44,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521357225] [2020-10-29 06:52:44,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:44,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 06:52:44,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202441272] [2020-10-29 06:52:44,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 06:52:44,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:44,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 06:52:44,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:52:44,068 INFO L87 Difference]: Start difference. First operand 6912 states and 8636 transitions. Second operand 10 states. [2020-10-29 06:52:51,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:52:51,877 INFO L93 Difference]: Finished difference Result 18748 states and 24608 transitions. [2020-10-29 06:52:51,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 06:52:51,878 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 354 [2020-10-29 06:52:51,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:52:51,940 INFO L225 Difference]: With dead ends: 18748 [2020-10-29 06:52:51,941 INFO L226 Difference]: Without dead ends: 13774 [2020-10-29 06:52:51,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-10-29 06:52:51,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13774 states. [2020-10-29 06:52:52,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13774 to 13284. [2020-10-29 06:52:52,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13284 states. [2020-10-29 06:52:52,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13284 states to 13284 states and 16650 transitions. [2020-10-29 06:52:52,324 INFO L78 Accepts]: Start accepts. Automaton has 13284 states and 16650 transitions. Word has length 354 [2020-10-29 06:52:52,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:52:52,325 INFO L481 AbstractCegarLoop]: Abstraction has 13284 states and 16650 transitions. [2020-10-29 06:52:52,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 06:52:52,325 INFO L276 IsEmpty]: Start isEmpty. Operand 13284 states and 16650 transitions. [2020-10-29 06:52:52,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2020-10-29 06:52:52,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:52:52,360 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, 4, 4, 4, 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, 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] [2020-10-29 06:52:52,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 06:52:52,360 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:52:52,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:52:52,361 INFO L82 PathProgramCache]: Analyzing trace with hash 928084990, now seen corresponding path program 2 times [2020-10-29 06:52:52,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:52:52,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706265876] [2020-10-29 06:52:52,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:52:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:52,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:52,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:52,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:52,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:53,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:55,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:57,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:57,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-10-29 06:52:57,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 06:52:57,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-29 06:52:57,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:57,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 06:52:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:52:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 291 [2020-10-29 06:52:57,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:57,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:52:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:57,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:57,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:57,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:52:57,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:57,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 06:52:57,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:57,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:57,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:57,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:57,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:52:57,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:57,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:52:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:57,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:57,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:57,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:57,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:52:57,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:57,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 06:52:57,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:57,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:57,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:57,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:57,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:52:57,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:57,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:52:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:57,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:57,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:58,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:58,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:52:58,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:58,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 06:52:58,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:58,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:58,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:52:58,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:52:58,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:52:58,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:58,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-29 06:52:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:58,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:58,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:58,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:52:58,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:52:58,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 06:52:58,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:58,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:58,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:52:58,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:58,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:52:58,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:58,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-29 06:52:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:52:58,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:58,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:52:58,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:52:58,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:52:58,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:52:58,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-29 06:52:58,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:52:58,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:52:58,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:52:58,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:52:58,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:52:58,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:52:58,855 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 476 proven. 76 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-29 06:52:58,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706265876] [2020-10-29 06:52:58,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:52:58,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 06:52:58,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098475747] [2020-10-29 06:52:58,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 06:52:58,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:52:58,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 06:52:58,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:52:58,858 INFO L87 Difference]: Start difference. First operand 13284 states and 16650 transitions. Second operand 10 states. [2020-10-29 06:53:01,907 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-29 06:53:02,508 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2020-10-29 06:53:03,304 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2020-10-29 06:53:04,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:04,451 INFO L93 Difference]: Finished difference Result 24670 states and 31086 transitions. [2020-10-29 06:53:04,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 06:53:04,452 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 403 [2020-10-29 06:53:04,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:04,494 INFO L225 Difference]: With dead ends: 24670 [2020-10-29 06:53:04,494 INFO L226 Difference]: Without dead ends: 13298 [2020-10-29 06:53:04,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2020-10-29 06:53:04,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13298 states. [2020-10-29 06:53:04,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13298 to 13092. [2020-10-29 06:53:04,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13092 states. [2020-10-29 06:53:04,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13092 states to 13092 states and 16386 transitions. [2020-10-29 06:53:04,868 INFO L78 Accepts]: Start accepts. Automaton has 13092 states and 16386 transitions. Word has length 403 [2020-10-29 06:53:04,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:04,869 INFO L481 AbstractCegarLoop]: Abstraction has 13092 states and 16386 transitions. [2020-10-29 06:53:04,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 06:53:04,869 INFO L276 IsEmpty]: Start isEmpty. Operand 13092 states and 16386 transitions. [2020-10-29 06:53:04,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-10-29 06:53:04,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:04,903 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:04,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 06:53:04,903 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:04,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:04,904 INFO L82 PathProgramCache]: Analyzing trace with hash -533163007, now seen corresponding path program 1 times [2020-10-29 06:53:04,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:04,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729667808] [2020-10-29 06:53:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:05,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:05,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:05,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:08,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:08,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-10-29 06:53:08,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:53:08,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3195 [2020-10-29 06:53:08,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:08,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:08,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:08,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-29 06:53:08,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 06:53:08,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:08,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:08,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:08,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:08,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:08,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:08,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:53:08,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:08,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:08,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:08,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:08,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:08,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:08,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:08,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:08,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:08,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:53:08,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:08,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 06:53:08,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:08,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:08,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:08,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:08,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:08,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:08,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:53:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:08,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:08,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:08,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 06:53:08,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:08,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 06:53:08,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:08,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 06:53:08,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:08,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-29 06:53:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:08,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:08,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:08,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 06:53:08,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:08,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 06:53:08,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:08,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:08,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:08,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:08,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 06:53:08,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 355 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-29 06:53:08,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729667808] [2020-10-29 06:53:08,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:08,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:53:08,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106714380] [2020-10-29 06:53:08,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:53:08,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:08,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:53:08,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:08,888 INFO L87 Difference]: Start difference. First operand 13092 states and 16386 transitions. Second operand 7 states. [2020-10-29 06:53:13,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:13,606 INFO L93 Difference]: Finished difference Result 26307 states and 33494 transitions. [2020-10-29 06:53:13,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:53:13,608 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 405 [2020-10-29 06:53:13,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:13,649 INFO L225 Difference]: With dead ends: 26307 [2020-10-29 06:53:13,649 INFO L226 Difference]: Without dead ends: 13409 [2020-10-29 06:53:13,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:53:13,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13409 states. [2020-10-29 06:53:13,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13409 to 12918. [2020-10-29 06:53:13,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12918 states. [2020-10-29 06:53:13,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12918 states to 12918 states and 15737 transitions. [2020-10-29 06:53:13,971 INFO L78 Accepts]: Start accepts. Automaton has 12918 states and 15737 transitions. Word has length 405 [2020-10-29 06:53:13,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:13,971 INFO L481 AbstractCegarLoop]: Abstraction has 12918 states and 15737 transitions. [2020-10-29 06:53:13,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:53:13,972 INFO L276 IsEmpty]: Start isEmpty. Operand 12918 states and 15737 transitions. [2020-10-29 06:53:13,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-10-29 06:53:13,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:13,992 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:13,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 06:53:13,992 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:13,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:13,992 INFO L82 PathProgramCache]: Analyzing trace with hash 2111476021, now seen corresponding path program 1 times [2020-10-29 06:53:13,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:13,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151901675] [2020-10-29 06:53:13,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:14,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:14,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:14,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:15,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:15,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:15,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:16,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:19,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:19,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:19,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-10-29 06:53:19,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 06:53:19,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-29 06:53:19,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:19,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:19,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:53:19,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:53:19,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-29 06:53:19,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:19,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:19,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:19,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:19,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:19,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:19,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:53:19,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:19,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:19,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:19,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:19,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:19,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:19,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:19,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:19,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:19,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:53:19,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:19,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 06:53:19,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:19,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:19,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:19,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:19,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:53:19,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:19,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:53:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:19,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:19,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:19,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:53:19,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:19,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 06:53:19,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:19,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:19,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:53:19,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:19,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-29 06:53:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:19,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:19,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:19,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 06:53:19,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:19,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-29 06:53:19,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:19,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:19,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:19,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:19,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-29 06:53:19,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:19,968 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 328 proven. 6 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-29 06:53:19,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151901675] [2020-10-29 06:53:19,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:19,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:53:19,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451772177] [2020-10-29 06:53:19,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:53:19,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:19,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:53:19,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:19,970 INFO L87 Difference]: Start difference. First operand 12918 states and 15737 transitions. Second operand 7 states. [2020-10-29 06:53:24,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:24,639 INFO L93 Difference]: Finished difference Result 26803 states and 32677 transitions. [2020-10-29 06:53:24,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:53:24,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 409 [2020-10-29 06:53:24,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:24,684 INFO L225 Difference]: With dead ends: 26803 [2020-10-29 06:53:24,684 INFO L226 Difference]: Without dead ends: 14269 [2020-10-29 06:53:24,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:53:24,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14269 states. [2020-10-29 06:53:24,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14269 to 14064. [2020-10-29 06:53:24,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14064 states. [2020-10-29 06:53:25,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14064 states to 14064 states and 17000 transitions. [2020-10-29 06:53:25,020 INFO L78 Accepts]: Start accepts. Automaton has 14064 states and 17000 transitions. Word has length 409 [2020-10-29 06:53:25,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:25,021 INFO L481 AbstractCegarLoop]: Abstraction has 14064 states and 17000 transitions. [2020-10-29 06:53:25,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:53:25,021 INFO L276 IsEmpty]: Start isEmpty. Operand 14064 states and 17000 transitions. [2020-10-29 06:53:25,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-10-29 06:53:25,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:25,043 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, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:25,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 06:53:25,043 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:25,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:25,044 INFO L82 PathProgramCache]: Analyzing trace with hash -730653282, now seen corresponding path program 1 times [2020-10-29 06:53:25,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:25,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861720851] [2020-10-29 06:53:25,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:25,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:25,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:25,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:26,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:27,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:30,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:30,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 437 [2020-10-29 06:53:30,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:53:30,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 06:53:30,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:30,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 06:53:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-29 06:53:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-29 06:53:30,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:30,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:30,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:30,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:30,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:30,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:30,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:53:30,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:30,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:30,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:30,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:30,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:30,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:30,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:30,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:30,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:30,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:53:30,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:30,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 06:53:30,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:30,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:30,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:30,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:30,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:30,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:30,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:53:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:30,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:30,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:30,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:53:30,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:30,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 06:53:30,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:30,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:30,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:30,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:30,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:30,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:30,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 06:53:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:30,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:30,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:30,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:53:30,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:30,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 06:53:30,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:30,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 06:53:30,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:30,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-29 06:53:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:30,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:30,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:30,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:30,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:31,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:31,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:53:31,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:53:31,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-10-29 06:53:31,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:31,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:31,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:31,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:31,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:53:31,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:31,166 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 198 proven. 10 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2020-10-29 06:53:31,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861720851] [2020-10-29 06:53:31,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:31,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:53:31,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655092108] [2020-10-29 06:53:31,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:53:31,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:31,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:53:31,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:31,169 INFO L87 Difference]: Start difference. First operand 14064 states and 17000 transitions. Second operand 7 states. [2020-10-29 06:53:33,042 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-29 06:53:33,466 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-29 06:53:36,812 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-29 06:53:37,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:37,985 INFO L93 Difference]: Finished difference Result 32135 states and 39093 transitions. [2020-10-29 06:53:37,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 06:53:37,987 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 419 [2020-10-29 06:53:37,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:38,029 INFO L225 Difference]: With dead ends: 32135 [2020-10-29 06:53:38,030 INFO L226 Difference]: Without dead ends: 17293 [2020-10-29 06:53:38,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-29 06:53:38,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17293 states. [2020-10-29 06:53:38,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17293 to 15758. [2020-10-29 06:53:38,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15758 states. [2020-10-29 06:53:38,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15758 states to 15758 states and 18962 transitions. [2020-10-29 06:53:38,399 INFO L78 Accepts]: Start accepts. Automaton has 15758 states and 18962 transitions. Word has length 419 [2020-10-29 06:53:38,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:38,399 INFO L481 AbstractCegarLoop]: Abstraction has 15758 states and 18962 transitions. [2020-10-29 06:53:38,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:53:38,400 INFO L276 IsEmpty]: Start isEmpty. Operand 15758 states and 18962 transitions. [2020-10-29 06:53:38,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-10-29 06:53:38,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:38,434 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:38,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 06:53:38,435 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:38,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:38,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1505394223, now seen corresponding path program 1 times [2020-10-29 06:53:38,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:38,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445213814] [2020-10-29 06:53:38,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:38,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:38,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:38,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:40,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:42,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:42,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 468 [2020-10-29 06:53:42,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:53:42,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3815 [2020-10-29 06:53:42,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:42,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:42,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:42,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 266 [2020-10-29 06:53:42,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-29 06:53:42,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:42,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:42,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:42,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:42,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:42,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:42,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:53:42,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:42,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:42,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:42,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:42,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:42,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:42,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:42,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:42,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:42,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:53:42,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:42,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 06:53:42,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:42,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:42,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:42,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:42,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:42,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:42,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:53:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:42,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:42,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:42,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 06:53:42,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:42,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 06:53:42,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:42,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 06:53:42,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:42,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-10-29 06:53:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:42,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:42,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:43,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:43,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 06:53:43,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:53:43,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-29 06:53:43,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:43,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:43,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:43,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:43,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-29 06:53:43,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:43,345 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 389 proven. 2 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-29 06:53:43,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445213814] [2020-10-29 06:53:43,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:43,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:53:43,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220750186] [2020-10-29 06:53:43,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:53:43,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:43,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:53:43,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:43,348 INFO L87 Difference]: Start difference. First operand 15758 states and 18962 transitions. Second operand 7 states. [2020-10-29 06:53:47,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:47,596 INFO L93 Difference]: Finished difference Result 33955 states and 41082 transitions. [2020-10-29 06:53:47,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:53:47,597 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 452 [2020-10-29 06:53:47,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:47,636 INFO L225 Difference]: With dead ends: 33955 [2020-10-29 06:53:47,637 INFO L226 Difference]: Without dead ends: 20329 [2020-10-29 06:53:47,658 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 [2020-10-29 06:53:47,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20329 states. [2020-10-29 06:53:48,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20329 to 20315. [2020-10-29 06:53:48,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20315 states. [2020-10-29 06:53:48,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20315 states to 20315 states and 24356 transitions. [2020-10-29 06:53:48,096 INFO L78 Accepts]: Start accepts. Automaton has 20315 states and 24356 transitions. Word has length 452 [2020-10-29 06:53:48,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:48,097 INFO L481 AbstractCegarLoop]: Abstraction has 20315 states and 24356 transitions. [2020-10-29 06:53:48,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:53:48,097 INFO L276 IsEmpty]: Start isEmpty. Operand 20315 states and 24356 transitions. [2020-10-29 06:53:48,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2020-10-29 06:53:48,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:48,123 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:48,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 06:53:48,124 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:48,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:48,124 INFO L82 PathProgramCache]: Analyzing trace with hash -610313209, now seen corresponding path program 1 times [2020-10-29 06:53:48,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:48,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226049524] [2020-10-29 06:53:48,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:48,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:48,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:49,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:49,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:52,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:52,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 475 [2020-10-29 06:53:52,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:53:52,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4081 [2020-10-29 06:53:52,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:52,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:52,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:52,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-29 06:53:52,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-29 06:53:52,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:52,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:52,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:52,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:52,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:52,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:52,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:53:52,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:52,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:52,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:52,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:52,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:52,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:52,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:52,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:52,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:52,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:53:52,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:52,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 06:53:52,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:52,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:52,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:52,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:52,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:52,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:52,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:53:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:52,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:52,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:52,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 06:53:52,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:52,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 06:53:52,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:52,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:52,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:52,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:52,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:53:52,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:52,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-29 06:53:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:52,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:52,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:52,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 06:53:52,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:52,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-29 06:53:52,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:52,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:52,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:52,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:52,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-29 06:53:52,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:53,128 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 383 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-29 06:53:53,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226049524] [2020-10-29 06:53:53,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:53,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:53:53,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209109267] [2020-10-29 06:53:53,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:53:53,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:53,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:53:53,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:53,130 INFO L87 Difference]: Start difference. First operand 20315 states and 24356 transitions. Second operand 7 states. [2020-10-29 06:53:58,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:58,416 INFO L93 Difference]: Finished difference Result 41531 states and 49823 transitions. [2020-10-29 06:53:58,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:53:58,418 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 459 [2020-10-29 06:53:58,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:58,460 INFO L225 Difference]: With dead ends: 41531 [2020-10-29 06:53:58,460 INFO L226 Difference]: Without dead ends: 23348 [2020-10-29 06:53:58,483 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 [2020-10-29 06:53:58,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23348 states. [2020-10-29 06:53:58,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23348 to 19756. [2020-10-29 06:53:58,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19756 states. [2020-10-29 06:53:58,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19756 states to 19756 states and 23645 transitions. [2020-10-29 06:53:58,885 INFO L78 Accepts]: Start accepts. Automaton has 19756 states and 23645 transitions. Word has length 459 [2020-10-29 06:53:58,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:58,886 INFO L481 AbstractCegarLoop]: Abstraction has 19756 states and 23645 transitions. [2020-10-29 06:53:58,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:53:58,886 INFO L276 IsEmpty]: Start isEmpty. Operand 19756 states and 23645 transitions. [2020-10-29 06:53:58,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-10-29 06:53:58,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:58,904 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:58,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 06:53:58,904 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:58,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:58,905 INFO L82 PathProgramCache]: Analyzing trace with hash 267609806, now seen corresponding path program 1 times [2020-10-29 06:53:58,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:58,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793875848] [2020-10-29 06:53:58,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:59,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:59,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:00,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:00,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:03,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:03,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:03,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 492 [2020-10-29 06:54:03,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:54:03,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 06:54:03,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:03,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 275 [2020-10-29 06:54:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-29 06:54:03,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:04,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:04,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:04,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:04,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:04,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:04,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:54:04,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:04,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:04,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:04,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:04,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:04,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:04,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:04,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:04,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:04,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:54:04,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:04,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 06:54:04,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:04,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:04,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:04,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:04,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:54:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:04,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:04,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:04,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 06:54:04,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:04,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 06:54:04,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:04,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:04,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:04,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:04,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 06:54:04,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:04,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-10-29 06:54:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:04,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:04,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:04,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 06:54:04,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:04,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-29 06:54:04,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:04,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:04,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:04,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:54:04,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-29 06:54:04,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:04,843 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 398 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-29 06:54:04,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793875848] [2020-10-29 06:54:04,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:54:04,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:54:04,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311976276] [2020-10-29 06:54:04,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:54:04,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:04,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:54:04,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:54:04,846 INFO L87 Difference]: Start difference. First operand 19756 states and 23645 transitions. Second operand 7 states. [2020-10-29 06:54:09,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:09,996 INFO L93 Difference]: Finished difference Result 41625 states and 49865 transitions. [2020-10-29 06:54:09,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:54:09,997 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 476 [2020-10-29 06:54:09,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:10,038 INFO L225 Difference]: With dead ends: 41625 [2020-10-29 06:54:10,038 INFO L226 Difference]: Without dead ends: 22253 [2020-10-29 06:54:10,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:54:10,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22253 states. [2020-10-29 06:54:10,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22253 to 21290. [2020-10-29 06:54:10,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21290 states. [2020-10-29 06:54:10,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21290 states to 21290 states and 25479 transitions. [2020-10-29 06:54:10,494 INFO L78 Accepts]: Start accepts. Automaton has 21290 states and 25479 transitions. Word has length 476 [2020-10-29 06:54:10,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:10,494 INFO L481 AbstractCegarLoop]: Abstraction has 21290 states and 25479 transitions. [2020-10-29 06:54:10,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:54:10,495 INFO L276 IsEmpty]: Start isEmpty. Operand 21290 states and 25479 transitions. [2020-10-29 06:54:10,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2020-10-29 06:54:10,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:10,525 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:54:10,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 06:54:10,525 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:10,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:10,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1649952651, now seen corresponding path program 1 times [2020-10-29 06:54:10,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:10,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010288688] [2020-10-29 06:54:10,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:10,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:10,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:11,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:11,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:13,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:15,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:15,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 508 [2020-10-29 06:54:15,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:54:15,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 06:54:15,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:15,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:15,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:15,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 291 [2020-10-29 06:54:15,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-29 06:54:15,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:15,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:15,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:15,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:15,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:15,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:15,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:54:15,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:15,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:15,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:15,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:15,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:15,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:15,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:15,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:15,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:15,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:54:15,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:15,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 06:54:15,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:15,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:15,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:15,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:15,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:15,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:15,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:54:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:16,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:16,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:16,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 06:54:16,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:16,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 06:54:16,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:16,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:16,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:16,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:16,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-29 06:54:16,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:16,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-10-29 06:54:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:16,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:16,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:16,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 06:54:16,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:16,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-29 06:54:16,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:16,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:16,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:16,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:54:16,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-29 06:54:16,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:54:16,983 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 414 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-29 06:54:16,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010288688] [2020-10-29 06:54:16,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:54:16,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:54:16,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640844227] [2020-10-29 06:54:16,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:54:16,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:16,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:54:16,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:54:16,985 INFO L87 Difference]: Start difference. First operand 21290 states and 25479 transitions. Second operand 7 states. [2020-10-29 06:54:21,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:21,058 INFO L93 Difference]: Finished difference Result 44199 states and 53329 transitions. [2020-10-29 06:54:21,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:54:21,059 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 492 [2020-10-29 06:54:21,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:21,130 INFO L225 Difference]: With dead ends: 44199 [2020-10-29 06:54:21,131 INFO L226 Difference]: Without dead ends: 23293 [2020-10-29 06:54:21,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:54:21,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23293 states. [2020-10-29 06:54:21,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23293 to 21480. [2020-10-29 06:54:21,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21480 states. [2020-10-29 06:54:21,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21480 states to 21480 states and 25630 transitions. [2020-10-29 06:54:21,664 INFO L78 Accepts]: Start accepts. Automaton has 21480 states and 25630 transitions. Word has length 492 [2020-10-29 06:54:21,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:21,665 INFO L481 AbstractCegarLoop]: Abstraction has 21480 states and 25630 transitions. [2020-10-29 06:54:21,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:54:21,665 INFO L276 IsEmpty]: Start isEmpty. Operand 21480 states and 25630 transitions. [2020-10-29 06:54:21,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2020-10-29 06:54:21,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:21,694 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:54:21,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 06:54:21,695 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:21,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:21,695 INFO L82 PathProgramCache]: Analyzing trace with hash 38223425, now seen corresponding path program 1 times [2020-10-29 06:54:21,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:21,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306652256] [2020-10-29 06:54:21,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:21,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:21,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:22,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:24,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:26,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:26,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 535 [2020-10-29 06:54:26,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:54:26,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4450 [2020-10-29 06:54:26,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:26,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:26,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:26,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-29 06:54:26,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-29 06:54:26,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:26,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:26,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:26,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:26,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:26,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:26,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:54:26,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:26,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:26,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:26,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:26,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:26,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:26,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:26,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:26,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:26,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:54:26,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:26,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 06:54:26,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:26,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:26,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:26,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:26,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:26,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:26,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:54:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:26,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:26,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:26,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:54:26,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:26,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 06:54:26,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:26,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:26,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:26,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:26,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:26,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:54:26,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 06:54:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:26,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:26,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:26,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 06:54:26,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:26,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 06:54:26,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:26,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:26,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:26,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:26,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:54:26,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:26,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-29 06:54:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:26,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:27,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:27,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 06:54:27,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:27,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-29 06:54:27,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:27,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:27,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:27,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:54:27,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-29 06:54:27,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:54:27,494 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 489 proven. 2 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-10-29 06:54:27,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306652256] [2020-10-29 06:54:27,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:54:27,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:54:27,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484355129] [2020-10-29 06:54:27,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:54:27,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:27,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:54:27,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:54:27,496 INFO L87 Difference]: Start difference. First operand 21480 states and 25630 transitions. Second operand 7 states. [2020-10-29 06:54:32,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:32,771 INFO L93 Difference]: Finished difference Result 44856 states and 53506 transitions. [2020-10-29 06:54:32,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:54:32,772 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 517 [2020-10-29 06:54:32,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:32,824 INFO L225 Difference]: With dead ends: 44856 [2020-10-29 06:54:32,824 INFO L226 Difference]: Without dead ends: 23760 [2020-10-29 06:54:32,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:54:32,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23760 states. [2020-10-29 06:54:33,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23760 to 22422. [2020-10-29 06:54:33,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22422 states. [2020-10-29 06:54:33,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22422 states to 22422 states and 26553 transitions. [2020-10-29 06:54:33,249 INFO L78 Accepts]: Start accepts. Automaton has 22422 states and 26553 transitions. Word has length 517 [2020-10-29 06:54:33,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:33,250 INFO L481 AbstractCegarLoop]: Abstraction has 22422 states and 26553 transitions. [2020-10-29 06:54:33,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:54:33,250 INFO L276 IsEmpty]: Start isEmpty. Operand 22422 states and 26553 transitions. [2020-10-29 06:54:33,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2020-10-29 06:54:33,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:33,281 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-29 06:54:33,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 06:54:33,281 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:33,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:33,282 INFO L82 PathProgramCache]: Analyzing trace with hash 48806142, now seen corresponding path program 1 times [2020-10-29 06:54:33,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:33,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844398230] [2020-10-29 06:54:33,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:33,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:33,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:34,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:34,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:38,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:38,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 558 [2020-10-29 06:54:38,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:54:38,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 06:54:38,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:38,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:38,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:54:38,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 340 [2020-10-29 06:54:38,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-29 06:54:38,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:38,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:38,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:38,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:38,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:38,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:38,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:54:38,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:38,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:38,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:38,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:38,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:38,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:38,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:38,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:38,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:38,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:54:38,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:38,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 06:54:38,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:38,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:38,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:38,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:38,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:38,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:38,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:54:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:38,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:38,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:38,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 06:54:38,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:38,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 06:54:38,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:38,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:38,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:38,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:38,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:38,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:38,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-29 06:54:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:38,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:38,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:38,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 06:54:38,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:38,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 06:54:38,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:38,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:38,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:38,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:38,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 06:54:38,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:38,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-10-29 06:54:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:38,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:39,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:39,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:39,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 06:54:39,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:54:39,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-29 06:54:39,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:39,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:39,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:39,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:39,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 06:54:39,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:39,443 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 198 proven. 4 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2020-10-29 06:54:39,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844398230] [2020-10-29 06:54:39,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:54:39,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:54:39,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773260799] [2020-10-29 06:54:39,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:54:39,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:39,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:54:39,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:54:39,445 INFO L87 Difference]: Start difference. First operand 22422 states and 26553 transitions. Second operand 5 states. [2020-10-29 06:54:42,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:42,614 INFO L93 Difference]: Finished difference Result 23190 states and 27435 transitions. [2020-10-29 06:54:42,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:54:42,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 540 [2020-10-29 06:54:42,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:42,616 INFO L225 Difference]: With dead ends: 23190 [2020-10-29 06:54:42,616 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 06:54:42,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:54:42,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 06:54:42,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 06:54:42,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 06:54:42,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 06:54:42,637 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 540 [2020-10-29 06:54:42,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:42,637 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 06:54:42,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:54:42,637 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 06:54:42,637 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 06:54:42,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 06:54:42,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 06:54:43,086 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 107 [2020-10-29 06:54:43,539 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2020-10-29 06:54:44,491 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 123 [2020-10-29 06:54:45,401 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 118