/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-fpi/brs3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:50:28,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:50:28,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:50:28,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:50:28,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:50:28,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:50:28,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:50:28,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:50:28,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:50:28,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:50:28,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:50:28,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:50:28,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:50:28,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:50:28,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:50:28,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:50:28,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:50:28,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:50:28,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:50:28,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:50:28,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:50:28,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:50:28,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:50:28,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:50:28,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:50:28,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:50:28,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:50:28,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:50:28,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:50:28,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:50:28,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:50:28,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:50:28,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:50:28,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:50:28,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:50:28,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:50:28,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:50:28,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:50:28,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:50:28,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:50:28,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:50:28,747 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 03:50:28,813 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:50:28,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:50:28,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:50:28,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:50:28,816 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:50:28,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:50:28,816 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:50:28,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:50:28,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:50:28,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:50:28,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:50:28,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:50:28,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:50:28,818 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:50:28,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:50:28,819 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:50:28,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:50:28,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:50:28,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:50:28,820 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:50:28,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:50:28,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:50:28,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:50:28,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:50:28,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:50:28,821 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:50:28,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:50:28,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:50:28,822 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:50:28,822 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:50:29,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:50:29,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:50:29,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:50:29,216 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:50:29,216 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:50:29,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs3.c [2020-10-29 03:50:29,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2476b4904/f44d41782b5a4e29b800954a4d83b2ad/FLAGca05c5627 [2020-10-29 03:50:29,986 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:50:29,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs3.c [2020-10-29 03:50:29,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2476b4904/f44d41782b5a4e29b800954a4d83b2ad/FLAGca05c5627 [2020-10-29 03:50:30,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2476b4904/f44d41782b5a4e29b800954a4d83b2ad [2020-10-29 03:50:30,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:50:30,368 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:50:30,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:50:30,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:50:30,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:50:30,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:50:30" (1/1) ... [2020-10-29 03:50:30,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e11acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:30, skipping insertion in model container [2020-10-29 03:50:30,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:50:30" (1/1) ... [2020-10-29 03:50:30,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:50:30,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:50:30,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:50:30,602 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:50:30,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:50:30,646 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:50:30,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:30 WrapperNode [2020-10-29 03:50:30,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:50:30,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:50:30,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:50:30,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:50:30,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:30" (1/1) ... [2020-10-29 03:50:30,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:30" (1/1) ... [2020-10-29 03:50:30,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:30" (1/1) ... [2020-10-29 03:50:30,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:30" (1/1) ... [2020-10-29 03:50:30,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:30" (1/1) ... [2020-10-29 03:50:30,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:30" (1/1) ... [2020-10-29 03:50:30,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:30" (1/1) ... [2020-10-29 03:50:30,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:50:30,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:50:30,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:50:30,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:50:30,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:50:30,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:50:30,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:50:30,776 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:50:30,777 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:50:30,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:50:30,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:50:30,778 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:50:30,778 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:50:30,778 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:50:30,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:50:30,779 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:50:30,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:50:30,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:50:30,780 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 03:50:30,780 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:50:30,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 03:50:30,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:50:30,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:50:30,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:50:30,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:50:30,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:50:30,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:50:31,333 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:50:31,333 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 03:50:31,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:50:31 BoogieIcfgContainer [2020-10-29 03:50:31,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:50:31,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:50:31,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:50:31,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:50:31,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:50:30" (1/3) ... [2020-10-29 03:50:31,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b7d622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:50:31, skipping insertion in model container [2020-10-29 03:50:31,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:30" (2/3) ... [2020-10-29 03:50:31,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b7d622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:50:31, skipping insertion in model container [2020-10-29 03:50:31,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:50:31" (3/3) ... [2020-10-29 03:50:31,350 INFO L111 eAbstractionObserver]: Analyzing ICFG brs3.c [2020-10-29 03:50:31,363 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:50:31,369 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:50:31,384 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:50:31,428 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:50:31,428 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:50:31,428 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:50:31,428 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:50:31,429 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:50:31,429 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:50:31,429 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:50:31,429 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:50:31,448 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-29 03:50:31,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 03:50:31,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:31,456 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] [2020-10-29 03:50:31,457 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:31,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:31,464 INFO L82 PathProgramCache]: Analyzing trace with hash 288317380, now seen corresponding path program 1 times [2020-10-29 03:50:31,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:31,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384574370] [2020-10-29 03:50:31,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:31,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:31,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:31,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:32,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:32,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:50:32,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:50:32,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-29 03:50:32,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:32,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:32,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:32,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 03:50:32,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:32,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:50:32,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:32,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:32,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:32,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:32,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:32,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 03:50:32,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:32,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:32,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:32,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:32,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:50:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:32,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:32,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:32,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:32,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:32,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:50:32,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:50:32,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:32,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:32,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:32,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:32,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:32,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:32,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:50:32,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384574370] [2020-10-29 03:50:32,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:50:32,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 03:50:32,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948990508] [2020-10-29 03:50:32,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 03:50:32,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:32,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 03:50:32,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 03:50:32,174 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-29 03:50:32,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:32,324 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-10-29 03:50:32,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 03:50:32,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-29 03:50:32,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:32,334 INFO L225 Difference]: With dead ends: 61 [2020-10-29 03:50:32,334 INFO L226 Difference]: Without dead ends: 27 [2020-10-29 03:50:32,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 03:50:32,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-29 03:50:32,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-29 03:50:32,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-29 03:50:32,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-29 03:50:32,382 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 22 [2020-10-29 03:50:32,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:32,383 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-29 03:50:32,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 03:50:32,383 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-29 03:50:32,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 03:50:32,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:32,385 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] [2020-10-29 03:50:32,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:50:32,385 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:32,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:32,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1231035376, now seen corresponding path program 1 times [2020-10-29 03:50:32,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:32,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945303210] [2020-10-29 03:50:32,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:32,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:32,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:32,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:32,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:50:32,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:50:32,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-29 03:50:32,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:32,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:32,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:50:32,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:50:32,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:50:32,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:32,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:32,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:32,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:32,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:32,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:32,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:50:32,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:32,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:32,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:32,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:32,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:32,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:32,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:50:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:32,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:32,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:32,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:32,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:32,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:50:32,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:32,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:32,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:32,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:32,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:32,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:32,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:50:32,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945303210] [2020-10-29 03:50:32,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:50:32,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:50:32,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316927707] [2020-10-29 03:50:32,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:50:32,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:32,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:50:32,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:50:32,853 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-10-29 03:50:33,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:33,007 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-10-29 03:50:33,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:50:33,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-29 03:50:33,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:33,009 INFO L225 Difference]: With dead ends: 40 [2020-10-29 03:50:33,010 INFO L226 Difference]: Without dead ends: 29 [2020-10-29 03:50:33,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:50:33,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-29 03:50:33,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-29 03:50:33,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 03:50:33,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-29 03:50:33,020 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 22 [2020-10-29 03:50:33,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:33,020 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-29 03:50:33,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:50:33,020 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-29 03:50:33,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:50:33,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:33,022 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] [2020-10-29 03:50:33,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:50:33,022 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:33,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:33,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1214934215, now seen corresponding path program 1 times [2020-10-29 03:50:33,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:33,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323241987] [2020-10-29 03:50:33,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:33,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:33,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:33,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:34,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:34,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:50:34,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:50:34,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1130 [2020-10-29 03:50:34,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:34,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:34,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:50:34,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:50:34,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:50:34,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:34,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:34,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:34,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:34,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:34,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:34,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:50:34,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:34,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:34,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:34,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:34,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:34,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:34,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:50:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:34,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:34,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:34,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:34,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:34,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:50:34,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:34,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:34,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:34,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:34,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:34,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:34,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:50:34,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323241987] [2020-10-29 03:50:34,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:34,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:50:34,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372593132] [2020-10-29 03:50:34,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:50:34,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:34,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:50:34,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:50:34,338 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 10 states. [2020-10-29 03:50:34,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:34,665 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2020-10-29 03:50:34,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:50:34,666 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-29 03:50:34,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:34,668 INFO L225 Difference]: With dead ends: 69 [2020-10-29 03:50:34,668 INFO L226 Difference]: Without dead ends: 57 [2020-10-29 03:50:34,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:50:34,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-29 03:50:34,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2020-10-29 03:50:34,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 03:50:34,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2020-10-29 03:50:34,679 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 28 [2020-10-29 03:50:34,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:34,680 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2020-10-29 03:50:34,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:50:34,680 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2020-10-29 03:50:34,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:50:34,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:34,681 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] [2020-10-29 03:50:34,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:50:34,682 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:34,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:34,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1894992585, now seen corresponding path program 1 times [2020-10-29 03:50:34,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:34,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677956862] [2020-10-29 03:50:34,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:34,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:34,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:34,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:35,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:35,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:50:35,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:50:35,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-10-29 03:50:35,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:35,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:35,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:50:35,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:50:35,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:50:35,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:35,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:35,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:35,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:35,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:35,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:35,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:50:35,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:35,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:35,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:35,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:35,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:35,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:35,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:50:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:35,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:35,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:35,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:35,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:35,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:50:35,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:35,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:35,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:35,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:35,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:35,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:35,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:50:35,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677956862] [2020-10-29 03:50:35,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:50:35,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 03:50:35,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614735012] [2020-10-29 03:50:35,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:50:35,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:35,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:50:35,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:50:35,348 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand 8 states. [2020-10-29 03:50:35,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:35,584 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2020-10-29 03:50:35,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:50:35,585 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-29 03:50:35,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:35,586 INFO L225 Difference]: With dead ends: 53 [2020-10-29 03:50:35,586 INFO L226 Difference]: Without dead ends: 39 [2020-10-29 03:50:35,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:50:35,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-29 03:50:35,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-10-29 03:50:35,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 03:50:35,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-10-29 03:50:35,594 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 28 [2020-10-29 03:50:35,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:35,595 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-10-29 03:50:35,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:50:35,595 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-10-29 03:50:35,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 03:50:35,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:35,596 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:50:35,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:50:35,597 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:35,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:35,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1229914284, now seen corresponding path program 1 times [2020-10-29 03:50:35,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:35,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775885908] [2020-10-29 03:50:35,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:35,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:35,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:35,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:35,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:36,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:36,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:36,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:36,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:37,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:37,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:37,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:37,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:37,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:37,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:38,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:38,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:38,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:38,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:38,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:38,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:38,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:40,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:40,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:50:40,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-29 03:50:40,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:50:40,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:40,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:40,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:50:40,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:50:40,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:50:40,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:40,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:40,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:40,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:40,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:40,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:40,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 03:50:40,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:40,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:40,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:40,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:40,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:40,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:50:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:40,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:40,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:40,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:40,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:40,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:40,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:40,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:40,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:40,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:40,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:40,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:40,977 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:50:40,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775885908] [2020-10-29 03:50:40,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:40,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:50:40,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091679106] [2020-10-29 03:50:40,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:50:40,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:40,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:50:40,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:50:40,981 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 13 states. [2020-10-29 03:50:41,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:41,667 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2020-10-29 03:50:41,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:50:41,667 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-10-29 03:50:41,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:41,669 INFO L225 Difference]: With dead ends: 70 [2020-10-29 03:50:41,669 INFO L226 Difference]: Without dead ends: 41 [2020-10-29 03:50:41,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:50:41,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-29 03:50:41,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-10-29 03:50:41,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:50:41,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-29 03:50:41,691 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 34 [2020-10-29 03:50:41,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:41,692 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-29 03:50:41,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:50:41,692 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-29 03:50:41,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 03:50:41,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:41,695 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:50:41,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:50:41,695 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:41,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:41,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1090575102, now seen corresponding path program 2 times [2020-10-29 03:50:41,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:41,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948812817] [2020-10-29 03:50:41,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:41,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:41,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:41,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:41,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:42,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:42,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:42,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:42,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:42,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:42,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:44,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:44,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:45,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:45,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:46,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:46,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:46,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:46,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:46,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 03:50:46,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 03:50:46,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:50:46,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:46,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:46,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:50:46,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:50:46,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 03:50:46,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:46,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:46,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:46,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:46,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:46,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:46,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:50:46,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:46,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:46,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:46,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:46,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:46,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:46,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:50:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:46,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:46,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:46,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:46,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:46,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:46,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:46,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:46,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:47,003 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:50:47,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948812817] [2020-10-29 03:50:47,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:47,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:50:47,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126963332] [2020-10-29 03:50:47,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:50:47,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:47,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:50:47,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:50:47,007 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 13 states. [2020-10-29 03:50:47,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:47,636 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2020-10-29 03:50:47,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:50:47,637 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-10-29 03:50:47,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:47,641 INFO L225 Difference]: With dead ends: 67 [2020-10-29 03:50:47,641 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 03:50:47,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:50:47,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 03:50:47,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-10-29 03:50:47,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 03:50:47,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2020-10-29 03:50:47,650 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 37 [2020-10-29 03:50:47,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:47,650 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2020-10-29 03:50:47,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:50:47,650 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2020-10-29 03:50:47,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 03:50:47,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:47,651 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-29 03:50:47,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:50:47,652 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:47,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:47,652 INFO L82 PathProgramCache]: Analyzing trace with hash -264327849, now seen corresponding path program 3 times [2020-10-29 03:50:47,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:47,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662825699] [2020-10-29 03:50:47,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:47,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:47,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:48,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:48,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:48,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:48,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:49,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:49,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:49,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:49,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:49,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:49,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:50,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:51,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:51,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:52,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:52,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:50:52,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 03:50:52,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:50:52,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:52,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:52,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:50:52,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:50:52,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:50:52,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:53,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:53,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:53,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:53,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:53,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:53,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:50:53,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:53,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:53,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:53,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:50:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:53,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:53,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:53,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:53,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:53,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:50:53,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:53,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:53,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:53,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:53,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:53,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:53,344 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:50:53,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662825699] [2020-10-29 03:50:53,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:53,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:50:53,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411022107] [2020-10-29 03:50:53,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:50:53,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:53,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:50:53,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:50:53,349 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 17 states. [2020-10-29 03:50:54,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:54,343 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2020-10-29 03:50:54,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:50:54,344 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 40 [2020-10-29 03:50:54,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:54,345 INFO L225 Difference]: With dead ends: 78 [2020-10-29 03:50:54,345 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 03:50:54,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:50:54,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 03:50:54,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-10-29 03:50:54,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 03:50:54,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-10-29 03:50:54,363 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 40 [2020-10-29 03:50:54,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:54,364 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-10-29 03:50:54,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:50:54,364 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-10-29 03:50:54,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 03:50:54,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:54,366 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:50:54,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:50:54,366 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:54,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:54,367 INFO L82 PathProgramCache]: Analyzing trace with hash -814888421, now seen corresponding path program 4 times [2020-10-29 03:50:54,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:54,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843539814] [2020-10-29 03:50:54,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:54,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:54,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:54,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:54,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:54,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:54,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:55,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:55,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:57,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:57,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:57,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:57,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:57,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:57,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:57,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:57,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:59,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:59,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 03:50:59,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 03:50:59,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:50:59,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:59,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:59,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:50:59,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:50:59,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 03:50:59,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:59,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:59,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:59,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:59,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:59,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:59,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:50:59,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:59,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:59,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:59,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:59,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:59,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:59,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:50:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:59,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:59,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:59,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:59,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:59,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:50:59,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:59,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:59,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:59,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:59,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:59,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:50:59,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843539814] [2020-10-29 03:50:59,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:59,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:50:59,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877685524] [2020-10-29 03:50:59,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:50:59,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:59,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:50:59,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:50:59,642 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 14 states. [2020-10-29 03:51:00,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:00,513 INFO L93 Difference]: Finished difference Result 90 states and 100 transitions. [2020-10-29 03:51:00,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:51:00,514 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-10-29 03:51:00,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:00,518 INFO L225 Difference]: With dead ends: 90 [2020-10-29 03:51:00,518 INFO L226 Difference]: Without dead ends: 57 [2020-10-29 03:51:00,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:51:00,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-29 03:51:00,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2020-10-29 03:51:00,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 03:51:00,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-29 03:51:00,534 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 43 [2020-10-29 03:51:00,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:00,535 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-29 03:51:00,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:51:00,535 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-29 03:51:00,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 03:51:00,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:00,539 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 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] [2020-10-29 03:51:00,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:51:00,539 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:00,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:00,540 INFO L82 PathProgramCache]: Analyzing trace with hash 153977650, now seen corresponding path program 5 times [2020-10-29 03:51:00,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:00,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396047541] [2020-10-29 03:51:00,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:00,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:00,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:01,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:01,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:01,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:02,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:04,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:04,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:04,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:05,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:05,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:05,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:05,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:51:05,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 03:51:05,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-29 03:51:05,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:05,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:05,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:51:05,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:51:05,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:51:05,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:06,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:06,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:06,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:06,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:06,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:06,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:51:06,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:06,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:06,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:06,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:51:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:06,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:06,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:06,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:06,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:06,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:06,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:06,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:06,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:51:06,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396047541] [2020-10-29 03:51:06,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:06,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:51:06,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901824646] [2020-10-29 03:51:06,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:51:06,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:06,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:51:06,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:51:06,781 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 21 states. [2020-10-29 03:51:07,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:07,968 INFO L93 Difference]: Finished difference Result 84 states and 95 transitions. [2020-10-29 03:51:07,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:51:07,968 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 46 [2020-10-29 03:51:07,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:07,970 INFO L225 Difference]: With dead ends: 84 [2020-10-29 03:51:07,970 INFO L226 Difference]: Without dead ends: 53 [2020-10-29 03:51:07,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:51:07,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-29 03:51:07,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-10-29 03:51:07,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 03:51:07,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2020-10-29 03:51:07,990 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 46 [2020-10-29 03:51:07,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:07,991 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2020-10-29 03:51:07,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:51:07,991 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2020-10-29 03:51:07,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 03:51:07,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:07,992 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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] [2020-10-29 03:51:07,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:51:07,994 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:07,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:07,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1224106592, now seen corresponding path program 6 times [2020-10-29 03:51:07,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:07,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376625941] [2020-10-29 03:51:07,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:08,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:08,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:08,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:08,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:08,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:08,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:08,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:08,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:08,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:09,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:09,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:10,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:10,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:10,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:10,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:10,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:10,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:11,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:11,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:12,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:12,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:13,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:13,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 03:51:13,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-29 03:51:13,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:51:13,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:13,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:13,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:51:13,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:51:13,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:51:13,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:13,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:13,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:13,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:13,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:13,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:13,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:13,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:13,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:13,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:13,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:13,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:13,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:13,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:51:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:13,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:13,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:13,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:13,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:13,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:13,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:13,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:13,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:13,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:13,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:13,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:13,218 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:51:13,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376625941] [2020-10-29 03:51:13,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:13,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:51:13,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886061051] [2020-10-29 03:51:13,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:51:13,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:13,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:51:13,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:51:13,220 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand 14 states. [2020-10-29 03:51:13,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:13,625 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2020-10-29 03:51:13,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:51:13,627 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2020-10-29 03:51:13,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:13,628 INFO L225 Difference]: With dead ends: 92 [2020-10-29 03:51:13,628 INFO L226 Difference]: Without dead ends: 57 [2020-10-29 03:51:13,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:51:13,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-29 03:51:13,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-10-29 03:51:13,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 03:51:13,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-29 03:51:13,637 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 49 [2020-10-29 03:51:13,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:13,637 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-29 03:51:13,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:51:13,638 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-29 03:51:13,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:51:13,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:13,640 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:51:13,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:51:13,640 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:13,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:13,641 INFO L82 PathProgramCache]: Analyzing trace with hash 480859253, now seen corresponding path program 7 times [2020-10-29 03:51:13,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:13,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586638688] [2020-10-29 03:51:13,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:13,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:13,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:14,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:14,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:15,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:15,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:16,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:16,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:16,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:17,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:17,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:18,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:18,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:18,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:18,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:51:18,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 03:51:18,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:51:18,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:18,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:18,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:51:18,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:51:18,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:51:18,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:20,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:20,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:20,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:20,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:20,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:20,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:20,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:20,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:20,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:20,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:20,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:20,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:20,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:51:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:20,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:20,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:20,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:20,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:20,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:20,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:20,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:20,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:20,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:20,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:20,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:20,074 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:51:20,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586638688] [2020-10-29 03:51:20,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:20,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:51:20,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396407289] [2020-10-29 03:51:20,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:51:20,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:20,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:51:20,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=547, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:51:20,077 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 25 states. [2020-10-29 03:51:22,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:22,483 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2020-10-29 03:51:22,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:51:22,484 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 52 [2020-10-29 03:51:22,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:22,485 INFO L225 Difference]: With dead ends: 93 [2020-10-29 03:51:22,485 INFO L226 Difference]: Without dead ends: 59 [2020-10-29 03:51:22,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=142, Invalid=1340, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:51:22,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-29 03:51:22,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2020-10-29 03:51:22,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 03:51:22,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-10-29 03:51:22,497 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 52 [2020-10-29 03:51:22,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:22,497 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-10-29 03:51:22,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:51:22,497 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-10-29 03:51:22,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 03:51:22,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:22,498 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:51:22,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:51:22,499 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:22,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:22,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1631885763, now seen corresponding path program 8 times [2020-10-29 03:51:22,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:22,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59961309] [2020-10-29 03:51:22,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:22,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:22,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:22,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:22,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:22,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:22,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:22,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:23,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:23,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:23,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:23,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:24,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:24,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:24,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:25,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:25,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:25,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:26,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:26,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:27,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:27,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 03:51:27,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-29 03:51:27,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:51:27,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:27,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:27,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:51:27,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:51:27,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:51:27,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:27,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:27,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:27,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:27,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:27,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:27,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:27,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:27,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:27,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:27,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:27,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:27,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:27,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:51:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:27,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:27,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:27,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:27,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:27,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:27,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:27,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:27,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:27,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:27,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:27,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:27,758 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 42 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:51:27,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59961309] [2020-10-29 03:51:27,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:27,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:51:27,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620662685] [2020-10-29 03:51:27,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:51:27,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:27,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:51:27,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:51:27,761 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 16 states. [2020-10-29 03:51:28,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:28,377 INFO L93 Difference]: Finished difference Result 121 states and 130 transitions. [2020-10-29 03:51:28,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:51:28,377 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 55 [2020-10-29 03:51:28,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:28,379 INFO L225 Difference]: With dead ends: 121 [2020-10-29 03:51:28,379 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 03:51:28,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:51:28,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 03:51:28,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2020-10-29 03:51:28,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 03:51:28,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2020-10-29 03:51:28,391 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 55 [2020-10-29 03:51:28,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:28,391 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2020-10-29 03:51:28,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:51:28,391 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2020-10-29 03:51:28,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 03:51:28,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:28,392 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:51:28,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:51:28,393 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:28,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:28,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1607709842, now seen corresponding path program 9 times [2020-10-29 03:51:28,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:28,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047472023] [2020-10-29 03:51:28,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:28,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:28,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:28,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:29,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:29,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:29,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:29,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:30,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:32,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:33,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:33,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:33,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:51:33,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 03:51:33,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:51:33,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:33,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:33,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:51:33,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:51:33,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:51:33,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:34,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:34,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:34,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:34,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:34,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:34,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:34,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:34,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:34,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:34,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:34,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:34,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:34,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:51:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:34,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:34,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:34,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:34,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:34,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:34,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:34,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:34,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:34,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:34,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:34,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:34,690 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:51:34,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047472023] [2020-10-29 03:51:34,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:34,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:51:34,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758173884] [2020-10-29 03:51:34,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:51:34,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:34,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:51:34,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:51:34,693 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 29 states. [2020-10-29 03:51:37,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:37,302 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2020-10-29 03:51:37,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:51:37,303 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 58 [2020-10-29 03:51:37,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:37,304 INFO L225 Difference]: With dead ends: 105 [2020-10-29 03:51:37,304 INFO L226 Difference]: Without dead ends: 65 [2020-10-29 03:51:37,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=208, Invalid=1514, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:51:37,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-29 03:51:37,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2020-10-29 03:51:37,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 03:51:37,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2020-10-29 03:51:37,327 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 58 [2020-10-29 03:51:37,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:37,328 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2020-10-29 03:51:37,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:51:37,329 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2020-10-29 03:51:37,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 03:51:37,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:37,330 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:51:37,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:51:37,332 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:37,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:37,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1090374400, now seen corresponding path program 10 times [2020-10-29 03:51:37,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:37,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101828865] [2020-10-29 03:51:37,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:37,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:37,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:37,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:37,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:37,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:38,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:38,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:38,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:38,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:39,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:39,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:42,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:42,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 03:51:42,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 03:51:42,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:51:42,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:42,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:42,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:51:42,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:51:42,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:51:42,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:42,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:42,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:42,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:42,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:42,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:42,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:51:42,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:42,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:42,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:42,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:42,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:42,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:51:42,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:51:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:42,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:42,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:42,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:42,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:42,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:42,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:42,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:42,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:42,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:42,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:42,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:51:42,695 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:51:42,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101828865] [2020-10-29 03:51:42,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:42,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:51:42,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749881703] [2020-10-29 03:51:42,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:51:42,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:42,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:51:42,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:51:42,700 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand 18 states. [2020-10-29 03:51:43,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:43,348 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2020-10-29 03:51:43,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:51:43,348 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 61 [2020-10-29 03:51:43,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:43,349 INFO L225 Difference]: With dead ends: 116 [2020-10-29 03:51:43,349 INFO L226 Difference]: Without dead ends: 69 [2020-10-29 03:51:43,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:51:43,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-29 03:51:43,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2020-10-29 03:51:43,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 03:51:43,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-10-29 03:51:43,366 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 61 [2020-10-29 03:51:43,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:43,367 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-10-29 03:51:43,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:51:43,367 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-10-29 03:51:43,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 03:51:43,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:43,373 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:51:43,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:51:43,376 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:43,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:43,377 INFO L82 PathProgramCache]: Analyzing trace with hash -197578793, now seen corresponding path program 11 times [2020-10-29 03:51:43,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:43,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38206387] [2020-10-29 03:51:43,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:43,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:43,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:44,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:44,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:45,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:46,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:46,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:47,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:47,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:48,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:48,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 03:51:48,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:51:48,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:51:48,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:48,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:48,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 03:51:48,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:51:48,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:51:48,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:49,499 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2020-10-29 03:51:49,700 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2020-10-29 03:51:49,920 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 43 [2020-10-29 03:51:50,476 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 70 [2020-10-29 03:51:51,096 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 79 [2020-10-29 03:51:51,662 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 85 [2020-10-29 03:51:52,238 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2020-10-29 03:51:52,950 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 80 [2020-10-29 03:51:53,355 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2020-10-29 03:51:53,785 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 79 [2020-10-29 03:51:54,101 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2020-10-29 03:51:54,486 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 68 [2020-10-29 03:51:54,703 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2020-10-29 03:51:54,922 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2020-10-29 03:51:55,134 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-10-29 03:51:55,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:55,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:55,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:55,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:55,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:55,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:55,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:55,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:55,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:55,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:55,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:55,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:55,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:51:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:55,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:55,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:55,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:55,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:55,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:55,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:55,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:55,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:55,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:55,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:55,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:55,842 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 20 proven. 118 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:51:55,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38206387] [2020-10-29 03:51:55,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:55,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 03:51:55,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722348353] [2020-10-29 03:51:55,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 03:51:55,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:55,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 03:51:55,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1163, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:51:55,845 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 36 states. [2020-10-29 03:51:58,343 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 201 DAG size of output: 193 [2020-10-29 03:52:00,870 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-10-29 03:52:01,292 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 39 [2020-10-29 03:52:02,711 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 278 DAG size of output: 93 [2020-10-29 03:52:03,779 WARN L193 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 97 [2020-10-29 03:52:05,297 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 198 DAG size of output: 131 [2020-10-29 03:52:09,885 WARN L193 SmtUtils]: Spent 4.43 s on a formula simplification. DAG size of input: 254 DAG size of output: 214 [2020-10-29 03:52:15,617 WARN L193 SmtUtils]: Spent 5.58 s on a formula simplification. DAG size of input: 269 DAG size of output: 227 [2020-10-29 03:52:21,611 WARN L193 SmtUtils]: Spent 5.85 s on a formula simplification. DAG size of input: 264 DAG size of output: 224 [2020-10-29 03:52:22,198 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2020-10-29 03:52:24,164 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 139 DAG size of output: 118 [2020-10-29 03:52:29,779 WARN L193 SmtUtils]: Spent 5.45 s on a formula simplification. DAG size of input: 258 DAG size of output: 218 [2020-10-29 03:52:36,540 WARN L193 SmtUtils]: Spent 6.59 s on a formula simplification. DAG size of input: 272 DAG size of output: 230 [2020-10-29 03:52:37,468 WARN L193 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 113 [2020-10-29 03:52:38,493 WARN L193 SmtUtils]: Spent 837.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 143 [2020-10-29 03:52:40,315 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 139 DAG size of output: 124 [2020-10-29 03:52:46,770 WARN L193 SmtUtils]: Spent 6.26 s on a formula simplification. DAG size of input: 261 DAG size of output: 221 [2020-10-29 03:52:47,300 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-29 03:52:48,263 WARN L193 SmtUtils]: Spent 841.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 137 [2020-10-29 03:52:48,694 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-29 03:52:49,788 WARN L193 SmtUtils]: Spent 940.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2020-10-29 03:52:51,064 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 129 DAG size of output: 124 [2020-10-29 03:52:51,583 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-29 03:52:52,396 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-29 03:52:53,225 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 111 [2020-10-29 03:52:53,498 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-10-29 03:52:53,745 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-29 03:52:54,040 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-29 03:53:00,256 WARN L193 SmtUtils]: Spent 5.86 s on a formula simplification. DAG size of input: 256 DAG size of output: 217 [2020-10-29 03:53:06,633 WARN L193 SmtUtils]: Spent 6.17 s on a formula simplification. DAG size of input: 258 DAG size of output: 219 [2020-10-29 03:53:07,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:07,148 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2020-10-29 03:53:07,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-29 03:53:07,149 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 64 [2020-10-29 03:53:07,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:07,152 INFO L225 Difference]: With dead ends: 127 [2020-10-29 03:53:07,152 INFO L226 Difference]: Without dead ends: 120 [2020-10-29 03:53:07,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1937 ImplicationChecksByTransitivity, 75.0s TimeCoverageRelationStatistics Valid=765, Invalid=6717, Unknown=0, NotChecked=0, Total=7482 [2020-10-29 03:53:07,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-29 03:53:07,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 107. [2020-10-29 03:53:07,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-29 03:53:07,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions. [2020-10-29 03:53:07,171 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 64 [2020-10-29 03:53:07,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:07,171 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 124 transitions. [2020-10-29 03:53:07,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 03:53:07,171 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions. [2020-10-29 03:53:07,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 03:53:07,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:07,172 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:07,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:53:07,173 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:07,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:07,173 INFO L82 PathProgramCache]: Analyzing trace with hash -863619173, now seen corresponding path program 12 times [2020-10-29 03:53:07,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:07,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515086055] [2020-10-29 03:53:07,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:07,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:07,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:08,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:08,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:08,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:08,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:08,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:09,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:09,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:09,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:09,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:09,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:09,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:09,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:09,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:10,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:10,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:10,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:10,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:10,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:10,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:12,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:12,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 03:53:12,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-29 03:53:12,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:53:12,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:12,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:12,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:53:12,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 03:53:12,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 03:53:12,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:13,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:13,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:13,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:13,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:13,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:13,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:53:13,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:13,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:13,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:13,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:13,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:13,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:13,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:13,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:13,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:13,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:13,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:13,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:13,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:13,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:13,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:13,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:13,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:13,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:13,233 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 37 proven. 118 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 03:53:13,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515086055] [2020-10-29 03:53:13,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:13,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:53:13,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113059638] [2020-10-29 03:53:13,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:53:13,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:13,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:53:13,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:53:13,242 INFO L87 Difference]: Start difference. First operand 107 states and 124 transitions. Second operand 21 states. [2020-10-29 03:53:14,859 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-10-29 03:53:15,267 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-10-29 03:53:15,484 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-29 03:53:15,621 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-10-29 03:53:15,946 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-10-29 03:53:16,124 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-29 03:53:16,284 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-29 03:53:16,757 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 03:53:18,105 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-29 03:53:18,942 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-29 03:53:19,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:19,228 INFO L93 Difference]: Finished difference Result 171 states and 197 transitions. [2020-10-29 03:53:19,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-29 03:53:19,229 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 67 [2020-10-29 03:53:19,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:19,231 INFO L225 Difference]: With dead ends: 171 [2020-10-29 03:53:19,231 INFO L226 Difference]: Without dead ends: 164 [2020-10-29 03:53:19,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1379 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=863, Invalid=4249, Unknown=0, NotChecked=0, Total=5112 [2020-10-29 03:53:19,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-29 03:53:19,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 146. [2020-10-29 03:53:19,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-29 03:53:19,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2020-10-29 03:53:19,255 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 67 [2020-10-29 03:53:19,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:19,255 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2020-10-29 03:53:19,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:53:19,255 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2020-10-29 03:53:19,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 03:53:19,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:19,256 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:19,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:53:19,257 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:19,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:19,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1656114784, now seen corresponding path program 13 times [2020-10-29 03:53:19,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:19,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811201243] [2020-10-29 03:53:19,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:19,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:19,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:19,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:19,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:19,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:20,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:20,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:20,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:20,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:21,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:21,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:21,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:21,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:21,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:22,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:22,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:22,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:22,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:23,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:23,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:23,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:23,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:24,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:24,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:24,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:24,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 03:53:24,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-29 03:53:24,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 03:53:24,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:24,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:24,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:53:24,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 03:53:24,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 03:53:24,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:25,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:25,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:25,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:25,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:25,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:25,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:25,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:25,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:25,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:25,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:25,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:25,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:25,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:25,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:25,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:25,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:25,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:25,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:53:25,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:25,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:25,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:25,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:25,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:25,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:25,060 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 51 proven. 85 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-29 03:53:25,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811201243] [2020-10-29 03:53:25,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:25,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:53:25,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667554078] [2020-10-29 03:53:25,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:53:25,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:25,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:53:25,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:53:25,063 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand 19 states. [2020-10-29 03:53:26,608 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-29 03:53:26,743 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-29 03:53:27,019 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-10-29 03:53:27,182 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-29 03:53:27,593 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-10-29 03:53:29,238 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-10-29 03:53:29,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:29,416 INFO L93 Difference]: Finished difference Result 199 states and 231 transitions. [2020-10-29 03:53:29,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-29 03:53:29,418 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 67 [2020-10-29 03:53:29,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:29,419 INFO L225 Difference]: With dead ends: 199 [2020-10-29 03:53:29,419 INFO L226 Difference]: Without dead ends: 192 [2020-10-29 03:53:29,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=575, Invalid=2847, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 03:53:29,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-29 03:53:29,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 178. [2020-10-29 03:53:29,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-29 03:53:29,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 210 transitions. [2020-10-29 03:53:29,447 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 210 transitions. Word has length 67 [2020-10-29 03:53:29,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:29,447 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 210 transitions. [2020-10-29 03:53:29,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:53:29,448 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 210 transitions. [2020-10-29 03:53:29,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:53:29,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:29,449 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:29,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:53:29,449 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:29,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:29,449 INFO L82 PathProgramCache]: Analyzing trace with hash -123672233, now seen corresponding path program 14 times [2020-10-29 03:53:29,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:29,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107218623] [2020-10-29 03:53:29,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:29,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:29,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:29,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:29,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:29,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:29,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:29,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:29,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:30,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:30,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:30,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:31,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:31,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:31,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:31,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:32,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:33,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:33,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:33,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:34,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:34,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:34,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:34,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 03:53:34,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-29 03:53:34,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:53:34,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:34,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:34,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:53:34,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 03:53:34,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:53:34,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:35,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:35,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:35,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:35,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:35,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:35,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:53:35,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:35,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:35,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:35,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:35,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:35,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:35,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:35,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:35,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:35,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:35,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:35,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:53:35,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:35,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:35,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:35,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:35,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:35,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:35,427 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 37 proven. 124 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-29 03:53:35,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107218623] [2020-10-29 03:53:35,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:35,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:53:35,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107619301] [2020-10-29 03:53:35,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:53:35,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:35,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:53:35,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:53:35,429 INFO L87 Difference]: Start difference. First operand 178 states and 210 transitions. Second operand 20 states. [2020-10-29 03:53:36,685 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-29 03:53:36,961 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2020-10-29 03:53:37,132 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-29 03:53:37,554 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-10-29 03:53:37,964 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-29 03:53:39,017 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-10-29 03:53:39,430 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-10-29 03:53:39,635 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-10-29 03:53:40,642 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-10-29 03:53:40,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:40,975 INFO L93 Difference]: Finished difference Result 280 states and 322 transitions. [2020-10-29 03:53:40,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-29 03:53:40,976 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 70 [2020-10-29 03:53:40,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:40,979 INFO L225 Difference]: With dead ends: 280 [2020-10-29 03:53:40,979 INFO L226 Difference]: Without dead ends: 273 [2020-10-29 03:53:40,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1096 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=674, Invalid=3748, Unknown=0, NotChecked=0, Total=4422 [2020-10-29 03:53:40,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-29 03:53:41,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 219. [2020-10-29 03:53:41,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-29 03:53:41,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 260 transitions. [2020-10-29 03:53:41,015 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 260 transitions. Word has length 70 [2020-10-29 03:53:41,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:41,015 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 260 transitions. [2020-10-29 03:53:41,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:53:41,015 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 260 transitions. [2020-10-29 03:53:41,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:53:41,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:41,017 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:41,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:53:41,017 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:41,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:41,017 INFO L82 PathProgramCache]: Analyzing trace with hash -769198924, now seen corresponding path program 15 times [2020-10-29 03:53:41,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:41,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096257750] [2020-10-29 03:53:41,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:41,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:41,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:42,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:42,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:42,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:43,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:44,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:44,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:46,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:46,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 03:53:46,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:53:46,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:53:46,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:46,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:46,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 03:53:46,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:53:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:53:46,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:46,816 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2020-10-29 03:53:47,211 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-10-29 03:53:47,513 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-10-29 03:53:47,662 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-10-29 03:53:47,831 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-29 03:53:48,292 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-29 03:53:48,651 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2020-10-29 03:53:49,292 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-10-29 03:53:49,618 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-10-29 03:53:50,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:50,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:50,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:50,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:50,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:50,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:53:50,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:50,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:50,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:50,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:50,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:50,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:50,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:50,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:50,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:50,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:50,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:50,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:53:50,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:50,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:50,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:50,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:50,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:50,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:50,674 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 2 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:53:50,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096257750] [2020-10-29 03:53:50,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:50,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-29 03:53:50,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520872992] [2020-10-29 03:53:50,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-29 03:53:50,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:50,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-29 03:53:50,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1208, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:53:50,676 INFO L87 Difference]: Start difference. First operand 219 states and 260 transitions. Second operand 37 states. [2020-10-29 03:53:51,838 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2020-10-29 03:53:52,746 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2020-10-29 03:53:53,015 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2020-10-29 03:53:53,280 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2020-10-29 03:53:53,531 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2020-10-29 03:53:53,837 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2020-10-29 03:53:54,141 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-10-29 03:53:54,377 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-29 03:53:54,635 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2020-10-29 03:53:55,719 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2020-10-29 03:53:55,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:55,746 INFO L93 Difference]: Finished difference Result 467 states and 557 transitions. [2020-10-29 03:53:55,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:53:55,747 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 70 [2020-10-29 03:53:55,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:55,750 INFO L225 Difference]: With dead ends: 467 [2020-10-29 03:53:55,750 INFO L226 Difference]: Without dead ends: 275 [2020-10-29 03:53:55,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=248, Invalid=2404, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 03:53:55,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-29 03:53:55,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 167. [2020-10-29 03:53:55,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-29 03:53:55,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 186 transitions. [2020-10-29 03:53:55,789 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 186 transitions. Word has length 70 [2020-10-29 03:53:55,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:55,790 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 186 transitions. [2020-10-29 03:53:55,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-29 03:53:55,790 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 186 transitions. [2020-10-29 03:53:55,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 03:53:55,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:55,790 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:55,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:53:55,791 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:55,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:55,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1863454235, now seen corresponding path program 16 times [2020-10-29 03:53:55,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:55,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587990174] [2020-10-29 03:53:55,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:55,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:55,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:56,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:56,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:56,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:56,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:57,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:58,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:58,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:58,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:59,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:59,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:59,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:59,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:59,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:00,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:00,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:00,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:00,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:00,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:00,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:00,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:00,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 03:54:00,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-29 03:54:00,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:54:00,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:00,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:00,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:54:00,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:54:00,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:54:00,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:01,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:01,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:01,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:01,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:01,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:01,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:01,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:01,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:01,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:01,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:01,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:01,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:01,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:01,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:01,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:01,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:01,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:01,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:01,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:01,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:01,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:01,221 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 123 proven. 83 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 03:54:01,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587990174] [2020-10-29 03:54:01,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:01,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:54:01,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157457724] [2020-10-29 03:54:01,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:54:01,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:01,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:54:01,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:54:01,223 INFO L87 Difference]: Start difference. First operand 167 states and 186 transitions. Second operand 20 states. [2020-10-29 03:54:02,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:02,152 INFO L93 Difference]: Finished difference Result 177 states and 195 transitions. [2020-10-29 03:54:02,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:54:02,153 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 73 [2020-10-29 03:54:02,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:02,155 INFO L225 Difference]: With dead ends: 177 [2020-10-29 03:54:02,155 INFO L226 Difference]: Without dead ends: 116 [2020-10-29 03:54:02,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=243, Invalid=687, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:54:02,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-29 03:54:02,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-10-29 03:54:02,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-29 03:54:02,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2020-10-29 03:54:02,176 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 73 [2020-10-29 03:54:02,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:02,176 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2020-10-29 03:54:02,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:54:02,176 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2020-10-29 03:54:02,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 03:54:02,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:02,177 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 8, 8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:02,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:54:02,177 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:02,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:02,178 INFO L82 PathProgramCache]: Analyzing trace with hash -521350028, now seen corresponding path program 17 times [2020-10-29 03:54:02,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:02,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268611351] [2020-10-29 03:54:02,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:02,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:02,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:02,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:02,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:02,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:02,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:02,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:03,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:03,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:05,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:05,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:05,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:05,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:05,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:06,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:07,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:07,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 03:54:07,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 03:54:07,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:54:07,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:07,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:07,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:54:07,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 03:54:07,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:54:07,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:08,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:08,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:08,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:08,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:08,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:08,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:54:08,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:08,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:08,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:08,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:08,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:08,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:08,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:08,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:08,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:08,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:08,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:08,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:08,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:08,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:08,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:08,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:08,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:08,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:08,361 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 68 proven. 143 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-29 03:54:08,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268611351] [2020-10-29 03:54:08,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:08,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:54:08,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229842285] [2020-10-29 03:54:08,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:54:08,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:08,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:54:08,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:54:08,363 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand 22 states. [2020-10-29 03:54:10,127 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 25 [2020-10-29 03:54:10,435 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 32 [2020-10-29 03:54:10,760 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 36 [2020-10-29 03:54:11,008 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 6 [2020-10-29 03:54:11,261 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 34 [2020-10-29 03:54:11,585 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-10-29 03:54:11,842 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 8 [2020-10-29 03:54:12,057 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 23 [2020-10-29 03:54:12,437 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 38 [2020-10-29 03:54:12,836 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 27 [2020-10-29 03:54:13,047 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 25 [2020-10-29 03:54:13,447 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-10-29 03:54:13,657 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 28 [2020-10-29 03:54:14,043 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 6 [2020-10-29 03:54:14,264 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-29 03:54:14,532 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 29 [2020-10-29 03:54:14,700 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2020-10-29 03:54:14,978 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2020-10-29 03:54:15,177 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-10-29 03:54:15,400 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2020-10-29 03:54:15,615 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40