/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:54:23,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:54:23,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:54:23,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:54:23,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:54:23,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:54:23,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:54:23,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:54:23,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:54:23,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:54:23,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:54:23,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:54:23,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:54:23,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:54:23,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:54:23,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:54:23,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:54:23,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:54:23,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:54:23,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:54:23,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:54:23,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:54:23,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:54:23,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:54:23,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:54:23,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:54:23,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:54:23,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:54:23,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:54:23,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:54:23,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:54:23,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:54:23,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:54:23,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:54:23,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:54:23,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:54:23,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:54:23,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:54:23,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:54:23,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:54:23,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:54:23,749 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 [2020-10-26 23:54:23,775 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:54:23,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:54:23,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:54:23,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:54:23,778 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:54:23,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:54:23,778 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:54:23,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:54:23,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:54:23,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:54:23,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:54:23,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:54:23,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:54:23,780 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:54:23,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:54:23,780 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:54:23,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:54:23,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:54:23,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:54:23,781 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:54:23,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:54:23,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:54:23,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:54:23,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:54:23,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:54:23,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:54:23,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:54:23,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:54:23,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:54:23,783 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:54:24,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:54:24,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:54:24,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:54:24,191 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:54:24,194 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:54:24,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label17.c [2020-10-26 23:54:24,283 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84d8d94dd/9c48cbc608b14fb787566e5819c1ad88/FLAG0728a2298 [2020-10-26 23:54:25,283 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:54:25,284 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label17.c [2020-10-26 23:54:25,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84d8d94dd/9c48cbc608b14fb787566e5819c1ad88/FLAG0728a2298 [2020-10-26 23:54:25,347 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84d8d94dd/9c48cbc608b14fb787566e5819c1ad88 [2020-10-26 23:54:25,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:54:25,360 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:54:25,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:54:25,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:54:25,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:54:25,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:54:25" (1/1) ... [2020-10-26 23:54:25,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363ce31e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:25, skipping insertion in model container [2020-10-26 23:54:25,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:54:25" (1/1) ... [2020-10-26 23:54:25,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:54:25,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:54:26,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:54:26,198 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:54:26,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:54:26,489 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:54:26,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:26 WrapperNode [2020-10-26 23:54:26,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:54:26,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:54:26,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:54:26,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:54:26,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:26" (1/1) ... [2020-10-26 23:54:26,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:26" (1/1) ... [2020-10-26 23:54:26,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:26" (1/1) ... [2020-10-26 23:54:26,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:26" (1/1) ... [2020-10-26 23:54:26,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:26" (1/1) ... [2020-10-26 23:54:26,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:26" (1/1) ... [2020-10-26 23:54:26,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:26" (1/1) ... [2020-10-26 23:54:26,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:54:26,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:54:26,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:54:26,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:54:26,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:26" (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 [2020-10-26 23:54:26,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:54:26,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:54:26,819 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:54:26,819 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:54:26,819 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:54:26,819 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:54:26,819 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:54:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:54:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:54:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:54:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:54:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:54:26,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:54:26,821 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:54:26,821 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:54:26,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:54:26,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:54:26,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:54:26,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:54:26,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:54:26,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:54:29,404 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:54:29,405 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:54:29,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:54:29 BoogieIcfgContainer [2020-10-26 23:54:29,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:54:29,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:54:29,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:54:29,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:54:29,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:54:25" (1/3) ... [2020-10-26 23:54:29,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11721af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:54:29, skipping insertion in model container [2020-10-26 23:54:29,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:26" (2/3) ... [2020-10-26 23:54:29,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11721af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:54:29, skipping insertion in model container [2020-10-26 23:54:29,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:54:29" (3/3) ... [2020-10-26 23:54:29,418 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label17.c [2020-10-26 23:54:29,430 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:54:29,437 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:54:29,452 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:54:29,485 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:54:29,486 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:54:29,486 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:54:29,486 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:54:29,486 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:54:29,486 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:54:29,487 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:54:29,487 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:54:29,517 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-26 23:54:29,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-26 23:54:29,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:29,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:54:29,530 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:29,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:29,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1408148900, now seen corresponding path program 1 times [2020-10-26 23:54:29,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:29,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038267491] [2020-10-26 23:54:29,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:29,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:30,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:30,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:54:30,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:30,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 755 [2020-10-26 23:54:30,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:30,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:54:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:54:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-26 23:54:30,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:54:30,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:30,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:30,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:30,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:30,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:30,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:54:30,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:30,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:30,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:30,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:54:30,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:30,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:54:30,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038267491] [2020-10-26 23:54:30,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:54:30,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 23:54:30,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804641468] [2020-10-26 23:54:30,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:54:30,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:30,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:54:30,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:54:30,830 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 5 states. [2020-10-26 23:54:37,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:54:37,246 INFO L93 Difference]: Finished difference Result 1520 states and 2853 transitions. [2020-10-26 23:54:37,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:54:37,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-26 23:54:37,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:54:37,291 INFO L225 Difference]: With dead ends: 1520 [2020-10-26 23:54:37,292 INFO L226 Difference]: Without dead ends: 1039 [2020-10-26 23:54:37,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:54:37,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-26 23:54:37,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1032. [2020-10-26 23:54:37,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-10-26 23:54:37,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1630 transitions. [2020-10-26 23:54:37,477 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1630 transitions. Word has length 65 [2020-10-26 23:54:37,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:54:37,478 INFO L481 AbstractCegarLoop]: Abstraction has 1032 states and 1630 transitions. [2020-10-26 23:54:37,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:54:37,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1630 transitions. [2020-10-26 23:54:37,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-26 23:54:37,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:37,486 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:54:37,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:54:37,487 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:37,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:37,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1438680043, now seen corresponding path program 1 times [2020-10-26 23:54:37,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:37,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322074254] [2020-10-26 23:54:37,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:37,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:38,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:39,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:39,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-26 23:54:39,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:54:39,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1464 [2020-10-26 23:54:39,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:39,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:54:39,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:54:39,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:54:39,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:54:39,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:39,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:39,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:39,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:39,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:39,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:54:39,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:39,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:39,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:39,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:54:39,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:39,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:39,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:39,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:39,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 23:54:39,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:39,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-26 23:54:39,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:39,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:39,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:39,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:54:39,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:39,455 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:54:39,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322074254] [2020-10-26 23:54:39,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:54:39,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 23:54:39,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441978673] [2020-10-26 23:54:39,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:54:39,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:39,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:54:39,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:54:39,459 INFO L87 Difference]: Start difference. First operand 1032 states and 1630 transitions. Second operand 8 states. [2020-10-26 23:54:46,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:54:46,805 INFO L93 Difference]: Finished difference Result 4158 states and 6722 transitions. [2020-10-26 23:54:46,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:54:46,810 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2020-10-26 23:54:46,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:54:46,842 INFO L225 Difference]: With dead ends: 4158 [2020-10-26 23:54:46,842 INFO L226 Difference]: Without dead ends: 3132 [2020-10-26 23:54:46,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:54:46,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3132 states. [2020-10-26 23:54:46,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3132 to 3116. [2020-10-26 23:54:46,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3116 states. [2020-10-26 23:54:46,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3116 states to 3116 states and 4537 transitions. [2020-10-26 23:54:46,968 INFO L78 Accepts]: Start accepts. Automaton has 3116 states and 4537 transitions. Word has length 140 [2020-10-26 23:54:46,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:54:46,968 INFO L481 AbstractCegarLoop]: Abstraction has 3116 states and 4537 transitions. [2020-10-26 23:54:46,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:54:46,969 INFO L276 IsEmpty]: Start isEmpty. Operand 3116 states and 4537 transitions. [2020-10-26 23:54:46,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-26 23:54:46,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:46,977 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-26 23:54:46,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:54:46,978 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:46,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:46,979 INFO L82 PathProgramCache]: Analyzing trace with hash -167280212, now seen corresponding path program 1 times [2020-10-26 23:54:46,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:46,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676529455] [2020-10-26 23:54:46,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:47,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:47,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:47,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:47,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:49,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:52,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:52,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-26 23:54:52,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:54:52,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-26 23:54:52,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:52,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:54:52,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:54:52,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-26 23:54:52,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:54:52,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:52,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:52,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:52,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:52,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:52,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:54:52,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:52,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:52,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:52,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:54:52,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:52,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:52,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:52,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:52,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:52,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:54:52,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:54:52,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-26 23:54:52,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:52,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:52,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:52,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:54:52,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:52,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:54:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:52,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:52,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:52,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:52,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:54:52,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:54:52,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-26 23:54:52,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:52,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:54:52,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:52,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:54:52,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:53,751 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 37 proven. 156 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:54:53,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676529455] [2020-10-26 23:54:53,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:54:53,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:54:53,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431183627] [2020-10-26 23:54:53,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 23:54:53,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:53,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 23:54:53,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:54:53,757 INFO L87 Difference]: Start difference. First operand 3116 states and 4537 transitions. Second operand 12 states. [2020-10-26 23:54:54,324 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2020-10-26 23:54:55,105 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2020-10-26 23:54:55,468 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2020-10-26 23:54:57,516 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2020-10-26 23:54:57,746 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-26 23:55:00,586 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2020-10-26 23:55:00,755 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2020-10-26 23:55:05,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:05,984 INFO L93 Difference]: Finished difference Result 3978 states and 6185 transitions. [2020-10-26 23:55:05,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-26 23:55:05,988 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 239 [2020-10-26 23:55:05,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:06,017 INFO L225 Difference]: With dead ends: 3978 [2020-10-26 23:55:06,017 INFO L226 Difference]: Without dead ends: 3975 [2020-10-26 23:55:06,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=313, Invalid=877, Unknown=0, NotChecked=0, Total=1190 [2020-10-26 23:55:06,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2020-10-26 23:55:06,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 3813. [2020-10-26 23:55:06,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3813 states. [2020-10-26 23:55:06,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3813 states to 3813 states and 5843 transitions. [2020-10-26 23:55:06,170 INFO L78 Accepts]: Start accepts. Automaton has 3813 states and 5843 transitions. Word has length 239 [2020-10-26 23:55:06,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:06,171 INFO L481 AbstractCegarLoop]: Abstraction has 3813 states and 5843 transitions. [2020-10-26 23:55:06,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 23:55:06,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3813 states and 5843 transitions. [2020-10-26 23:55:06,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-26 23:55:06,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:06,181 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:06,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:55:06,181 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:06,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:06,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1219760187, now seen corresponding path program 1 times [2020-10-26 23:55:06,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:06,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012646744] [2020-10-26 23:55:06,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:06,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:06,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:06,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:07,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:07,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:07,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:08,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:09,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:11,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:11,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-26 23:55:11,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 23:55:11,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 23:55:11,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:11,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:55:11,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:55:11,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 260 [2020-10-26 23:55:11,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:11,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:11,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:11,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:11,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:11,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:11,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:55:11,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:11,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:11,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:11,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:55:11,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:11,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:11,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:11,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:11,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:11,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:55:11,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:55:11,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-26 23:55:11,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:55:11,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:11,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:55:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:11,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:11,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:12,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:12,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 23:55:12,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:55:12,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-26 23:55:12,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:12,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:12,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:12,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:55:12,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:12,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-26 23:55:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:12,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:12,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:12,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 23:55:12,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:12,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-26 23:55:12,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:12,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:12,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:12,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-26 23:55:12,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:12,524 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 173 proven. 223 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-26 23:55:12,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012646744] [2020-10-26 23:55:12,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:12,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:55:12,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802975691] [2020-10-26 23:55:12,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:55:12,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:12,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:55:12,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:55:12,527 INFO L87 Difference]: Start difference. First operand 3813 states and 5843 transitions. Second operand 11 states. [2020-10-26 23:55:21,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:21,506 INFO L93 Difference]: Finished difference Result 9473 states and 14480 transitions. [2020-10-26 23:55:21,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-26 23:55:21,510 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 315 [2020-10-26 23:55:21,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:21,546 INFO L225 Difference]: With dead ends: 9473 [2020-10-26 23:55:21,546 INFO L226 Difference]: Without dead ends: 5666 [2020-10-26 23:55:21,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=329, Invalid=1393, Unknown=0, NotChecked=0, Total=1722 [2020-10-26 23:55:21,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5666 states. [2020-10-26 23:55:21,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5666 to 4564. [2020-10-26 23:55:21,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4564 states. [2020-10-26 23:55:21,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 6766 transitions. [2020-10-26 23:55:21,736 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 6766 transitions. Word has length 315 [2020-10-26 23:55:21,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:21,738 INFO L481 AbstractCegarLoop]: Abstraction has 4564 states and 6766 transitions. [2020-10-26 23:55:21,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:55:21,738 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 6766 transitions. [2020-10-26 23:55:21,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2020-10-26 23:55:21,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:21,752 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:21,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:55:21,752 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:21,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:21,753 INFO L82 PathProgramCache]: Analyzing trace with hash 133547069, now seen corresponding path program 1 times [2020-10-26 23:55:21,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:21,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891013920] [2020-10-26 23:55:21,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:21,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:21,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:22,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:23,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:26,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:26,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 456 [2020-10-26 23:55:26,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:55:26,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-26 23:55:26,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:26,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:55:26,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:55:26,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 223 [2020-10-26 23:55:26,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:27,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:27,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:27,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:27,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:27,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:27,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:55:27,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:27,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:27,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:27,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:55:27,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:27,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:27,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:27,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:27,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:27,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:55:27,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:55:27,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-26 23:55:27,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:27,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:27,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:27,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:55:27,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:27,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 23:55:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:27,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:27,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:27,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:55:27,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:27,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-26 23:55:27,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:27,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:27,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:27,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 23:55:27,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:27,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-26 23:55:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:27,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:27,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:27,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-26 23:55:27,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:27,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 23:55:27,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-26 23:55:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:27,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:28,243 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 271 proven. 205 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 23:55:28,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891013920] [2020-10-26 23:55:28,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:28,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:55:28,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413171211] [2020-10-26 23:55:28,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:55:28,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:28,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:55:28,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:55:28,248 INFO L87 Difference]: Start difference. First operand 4564 states and 6766 transitions. Second operand 9 states. [2020-10-26 23:55:33,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:33,703 INFO L93 Difference]: Finished difference Result 10198 states and 15082 transitions. [2020-10-26 23:55:33,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:55:33,704 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 440 [2020-10-26 23:55:33,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:33,741 INFO L225 Difference]: With dead ends: 10198 [2020-10-26 23:55:33,741 INFO L226 Difference]: Without dead ends: 5640 [2020-10-26 23:55:33,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:55:33,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5640 states. [2020-10-26 23:55:33,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5640 to 5614. [2020-10-26 23:55:33,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5614 states. [2020-10-26 23:55:33,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5614 states to 5614 states and 7533 transitions. [2020-10-26 23:55:33,948 INFO L78 Accepts]: Start accepts. Automaton has 5614 states and 7533 transitions. Word has length 440 [2020-10-26 23:55:33,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:33,949 INFO L481 AbstractCegarLoop]: Abstraction has 5614 states and 7533 transitions. [2020-10-26 23:55:33,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:55:33,949 INFO L276 IsEmpty]: Start isEmpty. Operand 5614 states and 7533 transitions. [2020-10-26 23:55:33,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2020-10-26 23:55:33,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:33,976 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-26 23:55:33,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:55:33,977 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:33,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:33,977 INFO L82 PathProgramCache]: Analyzing trace with hash 296749370, now seen corresponding path program 1 times [2020-10-26 23:55:33,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:33,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574107292] [2020-10-26 23:55:33,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:34,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:34,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:34,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:36,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:39,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:39,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 587 [2020-10-26 23:55:39,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:55:39,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-26 23:55:39,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:39,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:55:39,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:55:39,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:55:39,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:39,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:39,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:39,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:39,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:39,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:39,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:55:39,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:39,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:39,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:39,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:55:39,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:39,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:39,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:39,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:39,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:55:39,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:39,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-26 23:55:39,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:39,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:39,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:39,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:55:39,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:39,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 23:55:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:39,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:39,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:39,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:55:39,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:39,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 23:55:39,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:39,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:39,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-26 23:55:39,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:39,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:39,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-26 23:55:39,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:39,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:39,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:39,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:55:39,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:39,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 23:55:39,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:39,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:39,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:55:39,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:39,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:39,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-26 23:55:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:39,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:39,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:39,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-26 23:55:39,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:39,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:55:39,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:39,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:39,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-26 23:55:39,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:39,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:40,171 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 228 proven. 285 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2020-10-26 23:55:40,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574107292] [2020-10-26 23:55:40,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:40,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:55:40,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286347126] [2020-10-26 23:55:40,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:55:40,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:40,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:55:40,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:55:40,174 INFO L87 Difference]: Start difference. First operand 5614 states and 7533 transitions. Second operand 7 states. [2020-10-26 23:55:48,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:48,840 INFO L93 Difference]: Finished difference Result 16093 states and 22020 transitions. [2020-10-26 23:55:48,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:55:48,842 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 569 [2020-10-26 23:55:48,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:48,894 INFO L225 Difference]: With dead ends: 16093 [2020-10-26 23:55:48,895 INFO L226 Difference]: Without dead ends: 10485 [2020-10-26 23:55:48,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:55:48,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10485 states. [2020-10-26 23:55:49,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10485 to 9789. [2020-10-26 23:55:49,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9789 states. [2020-10-26 23:55:49,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9789 states to 9789 states and 12979 transitions. [2020-10-26 23:55:49,260 INFO L78 Accepts]: Start accepts. Automaton has 9789 states and 12979 transitions. Word has length 569 [2020-10-26 23:55:49,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:49,261 INFO L481 AbstractCegarLoop]: Abstraction has 9789 states and 12979 transitions. [2020-10-26 23:55:49,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:55:49,261 INFO L276 IsEmpty]: Start isEmpty. Operand 9789 states and 12979 transitions. [2020-10-26 23:55:49,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2020-10-26 23:55:49,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:49,308 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:49,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:55:49,309 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:49,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:49,309 INFO L82 PathProgramCache]: Analyzing trace with hash 491886788, now seen corresponding path program 1 times [2020-10-26 23:55:49,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:49,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416924057] [2020-10-26 23:55:49,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:49,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:49,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:49,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:49,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:50,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:54,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:54,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 712 [2020-10-26 23:55:54,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:55:54,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-26 23:55:54,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:54,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:55:54,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:55:54,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-26 23:55:54,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:54,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:54,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:54,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:54,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:54,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:54,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:55:54,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:54,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:54,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:54,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:55:54,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:54,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:54,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:54,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:55,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:55,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:55:55,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:55:55,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-10-26 23:55:55,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:55:55,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:56,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-26 23:55:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:56,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:56,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:56,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:55:56,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:56,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:55:56,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:56,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:56,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:55:56,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:56,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:56,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-26 23:55:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:56,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:56,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:56,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 23:55:56,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:56,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:55:56,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:56,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:56,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-26 23:55:56,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:56,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:56,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-10-26 23:55:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:56,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:56,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:56,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:55:56,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:56,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:55:56,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:56,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:56,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-26 23:55:56,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:56,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:57,046 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 228 proven. 365 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2020-10-26 23:55:57,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416924057] [2020-10-26 23:55:57,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:57,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:55:57,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673768316] [2020-10-26 23:55:57,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:55:57,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:57,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:55:57,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:55:57,050 INFO L87 Difference]: Start difference. First operand 9789 states and 12979 transitions. Second operand 8 states. [2020-10-26 23:56:02,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:02,487 INFO L93 Difference]: Finished difference Result 20038 states and 27336 transitions. [2020-10-26 23:56:02,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:56:02,489 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 694 [2020-10-26 23:56:02,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:02,552 INFO L225 Difference]: With dead ends: 20038 [2020-10-26 23:56:02,552 INFO L226 Difference]: Without dead ends: 10255 [2020-10-26 23:56:02,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:56:02,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10255 states. [2020-10-26 23:56:02,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10255 to 10130. [2020-10-26 23:56:02,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10130 states. [2020-10-26 23:56:02,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10130 states to 10130 states and 13342 transitions. [2020-10-26 23:56:02,935 INFO L78 Accepts]: Start accepts. Automaton has 10130 states and 13342 transitions. Word has length 694 [2020-10-26 23:56:02,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:02,936 INFO L481 AbstractCegarLoop]: Abstraction has 10130 states and 13342 transitions. [2020-10-26 23:56:02,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:56:02,936 INFO L276 IsEmpty]: Start isEmpty. Operand 10130 states and 13342 transitions. [2020-10-26 23:56:02,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2020-10-26 23:56:02,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:02,971 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:56:02,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:56:02,972 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:02,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:02,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1757250699, now seen corresponding path program 1 times [2020-10-26 23:56:02,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:02,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891777448] [2020-10-26 23:56:02,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:03,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:03,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:03,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:03,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:05,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:08,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:08,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 805 [2020-10-26 23:56:08,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:56:08,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-26 23:56:08,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:08,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:08,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-26 23:56:08,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-26 23:56:08,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:08,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:08,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:08,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:08,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:08,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:08,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:56:08,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:08,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:08,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:08,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:08,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:08,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:08,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:08,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:08,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:56:08,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:08,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:56:08,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:56:08,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:08,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:56:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:08,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:08,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:08,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:08,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:56:08,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:56:08,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-26 23:56:08,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:08,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:08,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:08,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:56:08,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:09,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-10-26 23:56:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:09,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:09,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:09,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:56:09,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:09,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:56:09,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:09,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:56:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:09,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:09,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2020-10-26 23:56:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:09,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:09,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:09,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 23:56:09,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:09,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:56:09,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:09,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:09,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-26 23:56:09,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:09,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:09,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-26 23:56:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:09,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:09,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:09,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:56:09,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:09,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:56:09,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:09,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:09,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-26 23:56:09,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:09,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:10,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1375 backedges. 385 proven. 373 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2020-10-26 23:56:10,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891777448] [2020-10-26 23:56:10,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:10,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:56:10,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068820739] [2020-10-26 23:56:10,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:56:10,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:10,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:56:10,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:56:10,709 INFO L87 Difference]: Start difference. First operand 10130 states and 13342 transitions. Second operand 6 states. [2020-10-26 23:56:14,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:14,982 INFO L93 Difference]: Finished difference Result 20141 states and 26706 transitions. [2020-10-26 23:56:14,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:56:14,983 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 785 [2020-10-26 23:56:14,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:15,032 INFO L225 Difference]: With dead ends: 20141 [2020-10-26 23:56:15,032 INFO L226 Difference]: Without dead ends: 10171 [2020-10-26 23:56:15,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:56:15,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10171 states. [2020-10-26 23:56:15,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10171 to 10109. [2020-10-26 23:56:15,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10109 states. [2020-10-26 23:56:15,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10109 states to 10109 states and 12690 transitions. [2020-10-26 23:56:15,369 INFO L78 Accepts]: Start accepts. Automaton has 10109 states and 12690 transitions. Word has length 785 [2020-10-26 23:56:15,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:15,370 INFO L481 AbstractCegarLoop]: Abstraction has 10109 states and 12690 transitions. [2020-10-26 23:56:15,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:56:15,370 INFO L276 IsEmpty]: Start isEmpty. Operand 10109 states and 12690 transitions. [2020-10-26 23:56:15,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2020-10-26 23:56:15,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:15,406 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:56:15,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:56:15,406 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:15,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:15,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1172922253, now seen corresponding path program 1 times [2020-10-26 23:56:15,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:15,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482882011] [2020-10-26 23:56:15,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:15,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:15,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:16,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:16,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:20,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:20,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 833 [2020-10-26 23:56:20,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:56:20,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-26 23:56:20,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:20,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:20,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-26 23:56:20,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:56:20,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:20,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:20,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:20,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:20,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:20,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:20,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:56:20,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:20,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:20,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:20,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:20,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:20,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:20,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:20,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:20,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:56:20,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:20,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-26 23:56:20,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:20,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:20,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:20,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-26 23:56:20,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:20,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:56:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:21,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:21,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:21,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:56:21,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:21,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-26 23:56:21,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:21,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:21,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:21,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:56:21,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:21,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-26 23:56:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:21,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:21,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:21,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:56:21,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:21,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:56:21,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:21,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:21,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:56:21,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:21,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:21,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-26 23:56:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:21,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:21,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:21,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 23:56:21,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:21,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:56:21,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:21,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:21,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-26 23:56:21,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:21,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:21,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-26 23:56:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:21,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:21,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:21,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:56:21,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:21,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:56:21,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:21,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:21,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-26 23:56:21,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:21,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:22,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 423 proven. 353 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2020-10-26 23:56:22,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482882011] [2020-10-26 23:56:22,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:22,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:22,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127475652] [2020-10-26 23:56:22,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:22,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:22,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:22,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:22,211 INFO L87 Difference]: Start difference. First operand 10109 states and 12690 transitions. Second operand 7 states. [2020-10-26 23:56:27,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:27,685 INFO L93 Difference]: Finished difference Result 24004 states and 30338 transitions. [2020-10-26 23:56:27,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:56:27,686 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 813 [2020-10-26 23:56:27,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:27,727 INFO L225 Difference]: With dead ends: 24004 [2020-10-26 23:56:27,728 INFO L226 Difference]: Without dead ends: 14238 [2020-10-26 23:56:27,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:56:27,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14238 states. [2020-10-26 23:56:28,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14238 to 14213. [2020-10-26 23:56:28,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14213 states. [2020-10-26 23:56:28,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14213 states to 14213 states and 17403 transitions. [2020-10-26 23:56:28,113 INFO L78 Accepts]: Start accepts. Automaton has 14213 states and 17403 transitions. Word has length 813 [2020-10-26 23:56:28,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:28,114 INFO L481 AbstractCegarLoop]: Abstraction has 14213 states and 17403 transitions. [2020-10-26 23:56:28,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:56:28,114 INFO L276 IsEmpty]: Start isEmpty. Operand 14213 states and 17403 transitions. [2020-10-26 23:56:28,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 922 [2020-10-26 23:56:28,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:28,148 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:56:28,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:56:28,148 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:28,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:28,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1570646642, now seen corresponding path program 1 times [2020-10-26 23:56:28,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:28,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450349643] [2020-10-26 23:56:28,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:28,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:28,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:28,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:30,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:33,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:33,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 943 [2020-10-26 23:56:33,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:56:33,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-26 23:56:33,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:33,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:33,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-26 23:56:33,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:56:33,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:33,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:33,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:33,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:33,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:33,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:33,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:56:33,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:33,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:33,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:33,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:33,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:33,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:33,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:33,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:33,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:56:33,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:33,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-26 23:56:33,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:33,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:33,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:33,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:33,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:33,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:56:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:33,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:33,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:33,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:56:33,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:33,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:56:33,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:33,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:33,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:33,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:56:33,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:33,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:56:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:33,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:33,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:33,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:56:33,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:33,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 23:56:33,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:33,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:33,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:33,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:56:33,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:34,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-26 23:56:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:34,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:34,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:34,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:56:34,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:34,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:56:34,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:34,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:34,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:56:34,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:34,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:34,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-26 23:56:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:34,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:34,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:34,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 23:56:34,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:34,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:56:34,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-26 23:56:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:34,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:34,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2020-10-26 23:56:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:34,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:34,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:34,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:56:34,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:34,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:56:34,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:34,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:34,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-26 23:56:34,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:34,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:34,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2057 backedges. 594 proven. 353 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2020-10-26 23:56:34,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450349643] [2020-10-26 23:56:34,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:34,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:34,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339465080] [2020-10-26 23:56:34,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:34,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:34,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:34,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:34,869 INFO L87 Difference]: Start difference. First operand 14213 states and 17403 transitions. Second operand 7 states. [2020-10-26 23:56:40,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:40,709 INFO L93 Difference]: Finished difference Result 28128 states and 34593 transitions. [2020-10-26 23:56:40,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:56:40,710 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 921 [2020-10-26 23:56:40,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:40,749 INFO L225 Difference]: With dead ends: 28128 [2020-10-26 23:56:40,749 INFO L226 Difference]: Without dead ends: 14258 [2020-10-26 23:56:40,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:56:40,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14258 states. [2020-10-26 23:56:41,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14258 to 14234. [2020-10-26 23:56:41,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14234 states. [2020-10-26 23:56:41,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14234 states to 14234 states and 16760 transitions. [2020-10-26 23:56:41,086 INFO L78 Accepts]: Start accepts. Automaton has 14234 states and 16760 transitions. Word has length 921 [2020-10-26 23:56:41,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:41,088 INFO L481 AbstractCegarLoop]: Abstraction has 14234 states and 16760 transitions. [2020-10-26 23:56:41,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:56:41,088 INFO L276 IsEmpty]: Start isEmpty. Operand 14234 states and 16760 transitions. [2020-10-26 23:56:41,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1113 [2020-10-26 23:56:41,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:41,129 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-26 23:56:41,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:56:41,130 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:41,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:41,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1438839315, now seen corresponding path program 1 times [2020-10-26 23:56:41,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:41,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061873703] [2020-10-26 23:56:41,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:41,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:41,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:41,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:43,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:46,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:46,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1132 [2020-10-26 23:56:46,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:56:46,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-26 23:56:46,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:46,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:56:46,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:56:46,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 496 [2020-10-26 23:56:46,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:46,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:46,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:46,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:46,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:46,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:46,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:56:46,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:46,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:46,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:46,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:56:46,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:46,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:46,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:47,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:47,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:56:47,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:47,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-26 23:56:47,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:47,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:47,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:47,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-26 23:56:47,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:47,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:56:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:47,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:47,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:47,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:56:47,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:47,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-26 23:56:47,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:47,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:47,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:47,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:56:47,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:47,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-10-26 23:56:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:47,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:47,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:47,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 23:56:47,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:47,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 23:56:47,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:47,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:47,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-26 23:56:47,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:47,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:47,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 691 [2020-10-26 23:56:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:47,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:47,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:47,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-26 23:56:47,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:47,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-26 23:56:47,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:47,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:47,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-26 23:56:47,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:47,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:48,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 906 [2020-10-26 23:56:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:48,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:48,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:48,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:56:48,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:48,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:56:48,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:48,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:48,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-26 23:56:48,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:48,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:49,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2135 backedges. 298 proven. 1090 refuted. 0 times theorem prover too weak. 747 trivial. 0 not checked. [2020-10-26 23:56:49,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061873703] [2020-10-26 23:56:49,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:49,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:49,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654355098] [2020-10-26 23:56:49,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:49,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:49,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:49,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:49,024 INFO L87 Difference]: Start difference. First operand 14234 states and 16760 transitions. Second operand 7 states. [2020-10-26 23:56:53,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:53,617 INFO L93 Difference]: Finished difference Result 28499 states and 33651 transitions. [2020-10-26 23:56:53,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:56:53,618 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1112 [2020-10-26 23:56:53,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:53,653 INFO L225 Difference]: With dead ends: 28499 [2020-10-26 23:56:53,653 INFO L226 Difference]: Without dead ends: 14608 [2020-10-26 23:56:53,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:56:53,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14608 states. [2020-10-26 23:56:53,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14608 to 14586. [2020-10-26 23:56:53,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14586 states. [2020-10-26 23:56:54,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14586 states to 14586 states and 17160 transitions. [2020-10-26 23:56:54,006 INFO L78 Accepts]: Start accepts. Automaton has 14586 states and 17160 transitions. Word has length 1112 [2020-10-26 23:56:54,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:54,007 INFO L481 AbstractCegarLoop]: Abstraction has 14586 states and 17160 transitions. [2020-10-26 23:56:54,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:56:54,007 INFO L276 IsEmpty]: Start isEmpty. Operand 14586 states and 17160 transitions. [2020-10-26 23:56:54,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1121 [2020-10-26 23:56:54,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:54,042 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:56:54,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:56:54,043 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:54,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:54,044 INFO L82 PathProgramCache]: Analyzing trace with hash -861637123, now seen corresponding path program 1 times [2020-10-26 23:56:54,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:54,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692644194] [2020-10-26 23:56:54,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:54,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:54,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:55,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:55,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:59,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:59,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1140 [2020-10-26 23:56:59,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:56:59,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-26 23:56:59,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:59,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:56:59,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:56:59,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-26 23:56:59,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:59,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:59,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:59,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:59,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:59,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:59,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:56:59,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:59,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:59,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:59,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:56:59,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:59,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:59,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:00,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:00,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:00,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:57:00,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:57:00,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-26 23:57:00,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:00,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:00,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:00,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-26 23:57:00,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:00,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:57:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:00,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:00,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:00,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:57:00,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:00,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-26 23:57:00,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:57:00,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:00,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-26 23:57:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:01,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:01,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:01,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 23:57:01,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:01,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 23:57:01,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:01,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:01,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-26 23:57:01,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:01,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:01,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-10-26 23:57:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:01,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:01,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:01,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-26 23:57:01,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:01,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-26 23:57:01,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:01,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:01,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-26 23:57:01,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:01,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:01,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 914 [2020-10-26 23:57:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:01,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:01,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:01,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:57:01,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:01,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:57:01,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:01,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:01,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-26 23:57:01,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:01,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:02,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2143 backedges. 298 proven. 1330 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2020-10-26 23:57:02,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692644194] [2020-10-26 23:57:02,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:02,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:57:02,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160613169] [2020-10-26 23:57:02,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:57:02,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:02,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:57:02,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:57:02,896 INFO L87 Difference]: Start difference. First operand 14586 states and 17160 transitions. Second operand 8 states. [2020-10-26 23:57:08,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:08,763 INFO L93 Difference]: Finished difference Result 28518 states and 33694 transitions. [2020-10-26 23:57:08,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 23:57:08,764 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1120 [2020-10-26 23:57:08,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:08,794 INFO L225 Difference]: With dead ends: 28518 [2020-10-26 23:57:08,794 INFO L226 Difference]: Without dead ends: 14614 [2020-10-26 23:57:08,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:57:08,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14614 states. [2020-10-26 23:57:09,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14614 to 14249. [2020-10-26 23:57:09,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14249 states. [2020-10-26 23:57:09,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14249 states to 14249 states and 16735 transitions. [2020-10-26 23:57:09,283 INFO L78 Accepts]: Start accepts. Automaton has 14249 states and 16735 transitions. Word has length 1120 [2020-10-26 23:57:09,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:09,284 INFO L481 AbstractCegarLoop]: Abstraction has 14249 states and 16735 transitions. [2020-10-26 23:57:09,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:57:09,284 INFO L276 IsEmpty]: Start isEmpty. Operand 14249 states and 16735 transitions. [2020-10-26 23:57:09,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1199 [2020-10-26 23:57:09,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:09,319 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:09,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:57:09,319 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:09,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:09,320 INFO L82 PathProgramCache]: Analyzing trace with hash -146190454, now seen corresponding path program 1 times [2020-10-26 23:57:09,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:09,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884186770] [2020-10-26 23:57:09,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:09,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:09,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:10,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:14,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:14,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1220 [2020-10-26 23:57:14,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:57:14,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-26 23:57:14,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:14,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:14,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-26 23:57:14,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-26 23:57:14,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:14,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:14,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:14,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:14,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:14,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:14,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:57:14,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:14,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:14,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:14,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:14,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:14,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:14,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:15,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:15,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:57:15,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:15,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:57:15,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:15,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:57:15,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:57:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:15,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:15,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:15,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 23:57:15,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:15,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-26 23:57:15,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:15,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:15,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:15,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-26 23:57:15,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:15,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:57:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:15,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:15,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:15,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-26 23:57:15,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:15,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-26 23:57:15,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:15,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:15,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-26 23:57:15,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:15,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-10-26 23:57:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:15,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:15,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:15,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:57:15,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:15,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:57:15,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-26 23:57:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:15,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:15,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 777 [2020-10-26 23:57:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:15,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:15,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:15,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-26 23:57:15,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:15,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:57:15,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:15,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:15,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-26 23:57:15,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:15,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:15,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 992 [2020-10-26 23:57:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:15,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:15,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:15,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:57:15,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:15,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 23:57:15,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-26 23:57:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:15,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:16,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2800 backedges. 691 proven. 449 refuted. 0 times theorem prover too weak. 1660 trivial. 0 not checked. [2020-10-26 23:57:16,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884186770] [2020-10-26 23:57:16,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:16,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:16,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447383091] [2020-10-26 23:57:16,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:57:16,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:16,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:57:16,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:16,761 INFO L87 Difference]: Start difference. First operand 14249 states and 16735 transitions. Second operand 7 states. [2020-10-26 23:57:23,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:23,925 INFO L93 Difference]: Finished difference Result 32333 states and 38277 transitions. [2020-10-26 23:57:23,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:57:23,926 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1198 [2020-10-26 23:57:23,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:23,964 INFO L225 Difference]: With dead ends: 32333 [2020-10-26 23:57:23,964 INFO L226 Difference]: Without dead ends: 18359 [2020-10-26 23:57:23,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:57:24,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18359 states. [2020-10-26 23:57:24,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18359 to 18329. [2020-10-26 23:57:24,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18329 states. [2020-10-26 23:57:24,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18329 states to 18329 states and 21249 transitions. [2020-10-26 23:57:24,386 INFO L78 Accepts]: Start accepts. Automaton has 18329 states and 21249 transitions. Word has length 1198 [2020-10-26 23:57:24,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:24,388 INFO L481 AbstractCegarLoop]: Abstraction has 18329 states and 21249 transitions. [2020-10-26 23:57:24,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:57:24,388 INFO L276 IsEmpty]: Start isEmpty. Operand 18329 states and 21249 transitions. [2020-10-26 23:57:24,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1201 [2020-10-26 23:57:24,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:24,429 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:24,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:57:24,430 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:24,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:24,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1900606266, now seen corresponding path program 1 times [2020-10-26 23:57:24,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:24,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280414680] [2020-10-26 23:57:24,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:24,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:25,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:26,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:27,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:29,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:29,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:29,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1222 [2020-10-26 23:57:29,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:57:29,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-26 23:57:29,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-26 23:57:29,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-26 23:57:29,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:29,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:29,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:29,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:29,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:29,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:29,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:57:29,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:29,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:29,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:29,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:29,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:29,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:29,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:29,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:29,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:57:29,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:29,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:57:29,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:29,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:29,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:29,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:29,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:30,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:57:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:30,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:30,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:30,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:57:30,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:30,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:57:30,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:30,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:30,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:30,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:57:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:30,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:30,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:30,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-26 23:57:30,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:30,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 23:57:30,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:30,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:30,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:30,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-26 23:57:30,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:30,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-26 23:57:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:30,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:30,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:30,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:57:30,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:30,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-26 23:57:30,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:30,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:30,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:30,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-26 23:57:30,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:30,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-10-26 23:57:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:30,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:30,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:30,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-26 23:57:30,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:30,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 23:57:30,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:30,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:30,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-26 23:57:30,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:30,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:30,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 994 [2020-10-26 23:57:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:30,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:30,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:30,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:57:30,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:30,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:57:30,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:30,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:30,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-26 23:57:30,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:30,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:31,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2802 backedges. 799 proven. 284 refuted. 0 times theorem prover too weak. 1719 trivial. 0 not checked. [2020-10-26 23:57:31,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280414680] [2020-10-26 23:57:31,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:31,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:31,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589496093] [2020-10-26 23:57:31,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:57:31,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:31,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:57:31,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:31,491 INFO L87 Difference]: Start difference. First operand 18329 states and 21249 transitions. Second operand 7 states. [2020-10-26 23:57:37,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:37,415 INFO L93 Difference]: Finished difference Result 37713 states and 44487 transitions. [2020-10-26 23:57:37,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:57:37,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1200 [2020-10-26 23:57:37,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:37,455 INFO L225 Difference]: With dead ends: 37713 [2020-10-26 23:57:37,455 INFO L226 Difference]: Without dead ends: 20066 [2020-10-26 23:57:37,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:57:37,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20066 states. [2020-10-26 23:57:37,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20066 to 19699. [2020-10-26 23:57:37,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19699 states. [2020-10-26 23:57:37,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19699 states to 19699 states and 23037 transitions. [2020-10-26 23:57:37,858 INFO L78 Accepts]: Start accepts. Automaton has 19699 states and 23037 transitions. Word has length 1200 [2020-10-26 23:57:37,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:37,860 INFO L481 AbstractCegarLoop]: Abstraction has 19699 states and 23037 transitions. [2020-10-26 23:57:37,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:57:37,860 INFO L276 IsEmpty]: Start isEmpty. Operand 19699 states and 23037 transitions. [2020-10-26 23:57:37,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1216 [2020-10-26 23:57:37,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:37,896 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:37,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:57:37,896 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:37,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:37,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1615008412, now seen corresponding path program 1 times [2020-10-26 23:57:37,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:37,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537114687] [2020-10-26 23:57:37,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:38,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:38,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:41,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:41,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:43,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:43,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1237 [2020-10-26 23:57:43,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:57:43,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-26 23:57:43,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:43,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:43,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-26 23:57:43,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:57:43,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:43,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:43,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:43,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:43,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:43,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:43,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:57:43,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:43,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:43,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:43,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:43,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:43,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:43,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:43,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:43,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:57:43,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:43,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:57:43,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:43,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:43,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:57:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:43,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:43,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:43,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 23:57:43,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:43,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-26 23:57:43,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:43,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:43,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:43,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-26 23:57:43,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:43,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:57:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:43,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:43,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:43,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:57:43,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:43,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-26 23:57:43,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:43,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:43,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:43,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:57:43,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:44,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-26 23:57:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:44,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:44,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:44,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 23:57:44,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:44,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:57:44,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-26 23:57:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:44,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:44,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-26 23:57:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:44,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:44,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:44,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-26 23:57:44,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:44,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:57:44,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:44,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:44,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-26 23:57:44,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:44,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:44,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1009 [2020-10-26 23:57:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:44,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:44,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:44,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:57:44,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:44,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:57:44,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-26 23:57:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:44,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:45,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 623 proven. 380 refuted. 0 times theorem prover too weak. 1818 trivial. 0 not checked. [2020-10-26 23:57:45,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537114687] [2020-10-26 23:57:45,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:45,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:57:45,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198881505] [2020-10-26 23:57:45,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:57:45,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:45,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:57:45,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:57:45,799 INFO L87 Difference]: Start difference. First operand 19699 states and 23037 transitions. Second operand 8 states. [2020-10-26 23:57:52,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:52,633 INFO L93 Difference]: Finished difference Result 40430 states and 47326 transitions. [2020-10-26 23:57:52,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:57:52,634 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1215 [2020-10-26 23:57:52,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:52,677 INFO L225 Difference]: With dead ends: 40430 [2020-10-26 23:57:52,678 INFO L226 Difference]: Without dead ends: 21413 [2020-10-26 23:57:52,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:57:52,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21413 states. [2020-10-26 23:57:53,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21413 to 21058. [2020-10-26 23:57:53,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21058 states. [2020-10-26 23:57:53,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21058 states to 21058 states and 24548 transitions. [2020-10-26 23:57:53,073 INFO L78 Accepts]: Start accepts. Automaton has 21058 states and 24548 transitions. Word has length 1215 [2020-10-26 23:57:53,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:53,075 INFO L481 AbstractCegarLoop]: Abstraction has 21058 states and 24548 transitions. [2020-10-26 23:57:53,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:57:53,075 INFO L276 IsEmpty]: Start isEmpty. Operand 21058 states and 24548 transitions. [2020-10-26 23:57:53,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1218 [2020-10-26 23:57:53,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:53,111 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:53,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:57:53,111 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:53,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:53,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1231555360, now seen corresponding path program 1 times [2020-10-26 23:57:53,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:53,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471132307] [2020-10-26 23:57:53,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:53,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:53,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking...