/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/reducercommutativity/max20-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:27:58,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:27:58,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:27:58,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:27:58,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:27:58,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:27:58,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:27:58,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:27:58,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:27:58,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:27:58,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:27:58,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:27:58,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:27:58,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:27:58,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:27:58,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:27:58,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:27:58,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:27:58,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:27:58,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:27:58,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:27:58,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:27:58,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:27:58,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:27:58,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:27:58,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:27:58,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:27:58,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:27:58,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:27:58,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:27:58,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:27:58,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:27:58,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:27:58,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:27:58,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:27:58,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:27:58,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:27:58,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:27:58,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:27:58,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:27:58,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:27:58,721 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 17:27:58,773 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:27:58,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:27:58,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:27:58,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:27:58,779 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:27:58,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:27:58,780 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:27:58,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:27:58,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:27:58,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:27:58,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:27:58,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:27:58,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:27:58,782 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:27:58,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:27:58,783 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:27:58,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:27:58,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:27:58,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:27:58,784 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:27:58,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:27:58,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:27:58,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:27:58,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:27:58,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:27:58,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:27:58,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:27:58,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:27:58,785 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:27:58,786 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:27:59,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:27:59,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:27:59,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:27:59,221 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:27:59,221 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:27:59,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max20-1.i [2020-10-28 17:27:59,300 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f6f4a279/9f20969f295240d7971f6d3a8fdce6d0/FLAG500998e35 [2020-10-28 17:27:59,972 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:27:59,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/max20-1.i [2020-10-28 17:27:59,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f6f4a279/9f20969f295240d7971f6d3a8fdce6d0/FLAG500998e35 [2020-10-28 17:28:00,341 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f6f4a279/9f20969f295240d7971f6d3a8fdce6d0 [2020-10-28 17:28:00,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:28:00,351 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:28:00,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:28:00,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:28:00,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:28:00,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:28:00" (1/1) ... [2020-10-28 17:28:00,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fc4ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:28:00, skipping insertion in model container [2020-10-28 17:28:00,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:28:00" (1/1) ... [2020-10-28 17:28:00,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:28:00,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:28:00,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:28:00,565 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:28:00,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:28:00,611 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:28:00,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:28:00 WrapperNode [2020-10-28 17:28:00,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:28:00,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:28:00,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:28:00,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:28:00,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:28:00" (1/1) ... [2020-10-28 17:28:00,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:28:00" (1/1) ... [2020-10-28 17:28:00,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:28:00" (1/1) ... [2020-10-28 17:28:00,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:28:00" (1/1) ... [2020-10-28 17:28:00,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:28:00" (1/1) ... [2020-10-28 17:28:00,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:28:00" (1/1) ... [2020-10-28 17:28:00,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:28:00" (1/1) ... [2020-10-28 17:28:00,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:28:00,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:28:00,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:28:00,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:28:00,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:28:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:28:00,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:28:00,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:28:00,743 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:28:00,743 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2020-10-28 17:28:00,743 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:28:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:28:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:28:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 17:28:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 17:28:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:28:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:28:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 17:28:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure max [2020-10-28 17:28:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:28:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:28:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:28:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:28:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:28:00,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:28:00,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:28:01,318 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:28:01,318 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 17:28:01,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:28:01 BoogieIcfgContainer [2020-10-28 17:28:01,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:28:01,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:28:01,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:28:01,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:28:01,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:28:00" (1/3) ... [2020-10-28 17:28:01,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c3aa42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:28:01, skipping insertion in model container [2020-10-28 17:28:01,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:28:00" (2/3) ... [2020-10-28 17:28:01,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c3aa42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:28:01, skipping insertion in model container [2020-10-28 17:28:01,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:28:01" (3/3) ... [2020-10-28 17:28:01,363 INFO L111 eAbstractionObserver]: Analyzing ICFG max20-1.i [2020-10-28 17:28:01,376 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:28:01,383 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:28:01,399 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:28:01,443 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:28:01,444 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:28:01,444 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:28:01,444 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:28:01,444 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:28:01,444 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:28:01,444 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:28:01,445 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:28:01,468 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-28 17:28:01,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 17:28:01,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:01,477 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:28:01,478 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:01,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:01,488 INFO L82 PathProgramCache]: Analyzing trace with hash -122162658, now seen corresponding path program 1 times [2020-10-28 17:28:01,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:01,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268064595] [2020-10-28 17:28:01,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:01,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:01,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:01,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:01,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:02,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:02,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:03,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:03,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:28:03,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:28:03,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1699 [2020-10-28 17:28:03,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:03,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:03,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:03,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:28:03,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:03,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:28:03,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:03,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:03,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:03,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:03,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:03,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:28:03,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:03,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:03,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:03,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:03,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:03,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:03,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 17:28:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:03,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:03,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:03,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:03,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:03,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:03,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:28:03,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:03,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:03,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:03,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:03,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:03,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:03,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 17:28:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:03,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:03,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:03,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:03,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:03,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:03,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:28:03,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:03,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:03,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:03,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:28:03,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:03,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:03,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:28:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:03,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:03,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:03,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:03,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:03,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:28:03,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:03,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:03,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:03,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:28:03,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:03,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:03,550 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 17:28:03,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268064595] [2020-10-28 17:28:03,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:28:03,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 17:28:03,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221786535] [2020-10-28 17:28:03,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 17:28:03,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:03,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 17:28:03,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 17:28:03,576 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-28 17:28:03,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:03,673 INFO L93 Difference]: Finished difference Result 64 states and 86 transitions. [2020-10-28 17:28:03,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 17:28:03,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-28 17:28:03,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:03,683 INFO L225 Difference]: With dead ends: 64 [2020-10-28 17:28:03,684 INFO L226 Difference]: Without dead ends: 30 [2020-10-28 17:28:03,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 17:28:03,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-28 17:28:03,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-28 17:28:03,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-28 17:28:03,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-28 17:28:03,733 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 34 [2020-10-28 17:28:03,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:03,734 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-28 17:28:03,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 17:28:03,734 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-28 17:28:03,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 17:28:03,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:03,736 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:28:03,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:28:03,737 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:03,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:03,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1084102031, now seen corresponding path program 1 times [2020-10-28 17:28:03,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:03,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730820551] [2020-10-28 17:28:03,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:03,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:03,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:03,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:03,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:03,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:04,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:05,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:28:05,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:28:05,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1568 [2020-10-28 17:28:05,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:05,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:05,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:28:05,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:28:05,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:28:05,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:05,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:05,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:05,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:05,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:05,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:28:05,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:05,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:05,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:05,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 17:28:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:05,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:05,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:05,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:05,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:28:05,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:05,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:05,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:05,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:28:05,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:05,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:05,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 17:28:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:05,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:05,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:05,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:05,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:28:05,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:05,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:28:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:05,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:05,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:28:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:05,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:05,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:05,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:05,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:28:05,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:05,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:05,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:05,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:28:05,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:05,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:05,428 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 17:28:05,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730820551] [2020-10-28 17:28:05,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:28:05,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:28:05,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56006685] [2020-10-28 17:28:05,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:28:05,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:05,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:28:05,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:28:05,432 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 4 states. [2020-10-28 17:28:05,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:05,522 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-10-28 17:28:05,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:28:05,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-28 17:28:05,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:05,524 INFO L225 Difference]: With dead ends: 54 [2020-10-28 17:28:05,524 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 17:28:05,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:28:05,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 17:28:05,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-28 17:28:05,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-28 17:28:05,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-28 17:28:05,535 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 34 [2020-10-28 17:28:05,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:05,535 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-28 17:28:05,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:28:05,536 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-28 17:28:05,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 17:28:05,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:05,537 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:28:05,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:28:05,538 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:05,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:05,538 INFO L82 PathProgramCache]: Analyzing trace with hash -839912781, now seen corresponding path program 1 times [2020-10-28 17:28:05,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:05,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290891939] [2020-10-28 17:28:05,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:05,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:05,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:07,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:07,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:28:07,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:28:07,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2247 [2020-10-28 17:28:07,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:07,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:28:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:28:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:28:07,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:07,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:07,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:07,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:07,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:07,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:07,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:28:07,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:07,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:07,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:07,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:07,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:07,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:07,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:28:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:07,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:07,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:07,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:07,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:07,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:07,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:28:07,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:07,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:28:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:07,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:07,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 17:28:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:07,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:07,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:07,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:07,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:07,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:07,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:28:07,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:07,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:07,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:07,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:28:07,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:07,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:07,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:28:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:07,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:07,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:07,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:07,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:07,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:07,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:28:07,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:07,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:07,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:07,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:28:07,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:07,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:07,892 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 17:28:07,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290891939] [2020-10-28 17:28:07,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:07,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:28:07,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229628484] [2020-10-28 17:28:07,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:28:07,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:07,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:28:07,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:28:07,895 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 5 states. [2020-10-28 17:28:08,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:08,081 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-28 17:28:08,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:28:08,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-28 17:28:08,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:08,084 INFO L225 Difference]: With dead ends: 56 [2020-10-28 17:28:08,085 INFO L226 Difference]: Without dead ends: 34 [2020-10-28 17:28:08,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:28:08,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-28 17:28:08,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-28 17:28:08,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-28 17:28:08,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-28 17:28:08,100 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 36 [2020-10-28 17:28:08,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:08,101 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-28 17:28:08,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:28:08,101 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-28 17:28:08,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 17:28:08,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:08,103 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] [2020-10-28 17:28:08,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:28:08,103 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:08,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:08,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1897722485, now seen corresponding path program 2 times [2020-10-28 17:28:08,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:08,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827398472] [2020-10-28 17:28:08,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:08,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:08,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:08,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:08,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:08,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:08,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:10,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:11,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 17:28:11,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:28:11,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2871 [2020-10-28 17:28:11,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:11,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:11,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:28:11,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 17:28:11,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:28:11,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:11,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:11,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:11,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:11,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:11,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:11,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:28:11,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:11,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:11,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:11,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:11,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:11,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:11,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:28:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:11,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:11,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:11,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:11,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:11,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:11,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:28:11,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:11,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:11,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:11,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:11,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:11,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:11,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 17:28:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:11,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:11,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:11,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:11,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:11,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:11,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:28:11,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:11,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:11,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:11,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:11,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:11,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:11,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:28:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:11,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:11,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:11,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:28:11,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:11,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:28:11,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:11,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:11,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:28:11,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:28:11,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:28:11,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:11,109 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:28:11,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827398472] [2020-10-28 17:28:11,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:28:11,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:28:11,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581226325] [2020-10-28 17:28:11,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:28:11,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:11,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:28:11,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:28:11,113 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 4 states. [2020-10-28 17:28:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:11,256 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2020-10-28 17:28:11,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:28:11,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-28 17:28:11,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:11,258 INFO L225 Difference]: With dead ends: 58 [2020-10-28 17:28:11,258 INFO L226 Difference]: Without dead ends: 37 [2020-10-28 17:28:11,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:28:11,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-28 17:28:11,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-10-28 17:28:11,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-28 17:28:11,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-10-28 17:28:11,273 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 38 [2020-10-28 17:28:11,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:11,275 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-10-28 17:28:11,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:28:11,276 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-10-28 17:28:11,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 17:28:11,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:11,277 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-28 17:28:11,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:28:11,278 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:11,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:11,278 INFO L82 PathProgramCache]: Analyzing trace with hash -467101424, now seen corresponding path program 1 times [2020-10-28 17:28:11,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:11,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633168511] [2020-10-28 17:28:11,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:11,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:11,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:11,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:11,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:11,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:16,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:16,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 17:28:16,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:28:16,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 17:28:16,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:16,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:28:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 17:28:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:28:16,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:16,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:16,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:16,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:16,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:16,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:16,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:28:16,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:16,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:16,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:16,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:16,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:16,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:16,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:28:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:16,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:16,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:16,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:16,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:28:16,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:16,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:28:16,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:16,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:16,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:16,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:16,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:16,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:16,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 17:28:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:16,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:16,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:16,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:16,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:28:16,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:16,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:28:16,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:16,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:16,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:16,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:16,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:16,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:16,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:28:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:16,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:16,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:16,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:28:16,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:16,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:28:16,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:16,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:16,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:28:16,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:28:16,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:28:16,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:16,468 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-28 17:28:16,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633168511] [2020-10-28 17:28:16,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:16,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:28:16,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473222691] [2020-10-28 17:28:16,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:28:16,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:16,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:28:16,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:28:16,472 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 5 states. [2020-10-28 17:28:16,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:16,649 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2020-10-28 17:28:16,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:28:16,650 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-28 17:28:16,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:16,651 INFO L225 Difference]: With dead ends: 63 [2020-10-28 17:28:16,652 INFO L226 Difference]: Without dead ends: 41 [2020-10-28 17:28:16,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:28:16,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-28 17:28:16,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2020-10-28 17:28:16,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-28 17:28:16,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-10-28 17:28:16,669 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 50 [2020-10-28 17:28:16,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:16,669 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-10-28 17:28:16,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:28:16,670 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-10-28 17:28:16,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 17:28:16,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:16,673 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2020-10-28 17:28:16,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:28:16,673 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:16,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:16,674 INFO L82 PathProgramCache]: Analyzing trace with hash -26988757, now seen corresponding path program 2 times [2020-10-28 17:28:16,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:16,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307330369] [2020-10-28 17:28:16,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:16,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:16,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:16,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:16,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:16,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:18,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:21,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:21,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 17:28:21,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:28:21,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 17:28:21,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:21,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:21,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:28:21,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 17:28:21,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:28:21,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:21,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:21,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:21,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:21,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:21,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:21,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:28:21,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:21,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:21,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:21,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:21,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:21,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:21,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:28:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:21,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:21,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:21,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:21,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:28:21,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:21,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 17:28:21,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:21,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:21,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:21,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:21,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:21,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:21,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 17:28:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:21,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:21,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:21,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:21,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:28:21,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:21,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 17:28:21,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:21,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:21,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:21,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:21,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:21,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:21,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 17:28:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:21,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:21,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:21,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:21,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:28:21,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:21,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 17:28:21,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:21,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:21,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:21,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:28:21,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:21,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:21,877 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-28 17:28:21,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307330369] [2020-10-28 17:28:21,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:28:21,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:28:21,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243744446] [2020-10-28 17:28:21,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:28:21,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:21,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:28:21,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:28:21,881 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 4 states. [2020-10-28 17:28:21,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:21,982 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-10-28 17:28:21,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:28:21,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-28 17:28:21,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:21,986 INFO L225 Difference]: With dead ends: 61 [2020-10-28 17:28:21,986 INFO L226 Difference]: Without dead ends: 40 [2020-10-28 17:28:21,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:28:21,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-28 17:28:21,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-28 17:28:21,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 17:28:21,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-28 17:28:21,993 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 62 [2020-10-28 17:28:21,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:21,995 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-28 17:28:21,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:28:21,995 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-28 17:28:21,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 17:28:21,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:21,996 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2020-10-28 17:28:21,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:28:21,997 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:21,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:21,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1182221175, now seen corresponding path program 1 times [2020-10-28 17:28:21,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:21,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037443129] [2020-10-28 17:28:21,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:22,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:22,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:22,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:22,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:22,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:27,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:27,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 17:28:27,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:28:27,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 17:28:27,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:27,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:27,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:28:27,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 17:28:27,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:28:27,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:27,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:27,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:27,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:27,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:27,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:27,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:28:27,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:27,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:27,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:27,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:27,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:27,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:28:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:27,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:27,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:27,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:28:27,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:27,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:28:27,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:27,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:27,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:28:27,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:28:27,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:28:27,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:27,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 17:28:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:27,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:27,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:27,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:27,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:28:27,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:27,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 17:28:27,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:27,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:27,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:27,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:28:27,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:27,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:27,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 17:28:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:27,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:27,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:27,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:27,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 17:28:27,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:27,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 17:28:27,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:27,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:27,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:27,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:28:27,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:27,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:27,178 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-28 17:28:27,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037443129] [2020-10-28 17:28:27,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:27,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:28:27,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827058626] [2020-10-28 17:28:27,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:28:27,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:27,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:28:27,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:28:27,181 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 6 states. [2020-10-28 17:28:27,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:27,352 INFO L93 Difference]: Finished difference Result 73 states and 89 transitions. [2020-10-28 17:28:27,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:28:27,353 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-28 17:28:27,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:27,354 INFO L225 Difference]: With dead ends: 73 [2020-10-28 17:28:27,354 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 17:28:27,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:28:27,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 17:28:27,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-10-28 17:28:27,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 17:28:27,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-28 17:28:27,362 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 64 [2020-10-28 17:28:27,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:27,362 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-28 17:28:27,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:28:27,363 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-28 17:28:27,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 17:28:27,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:27,364 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 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] [2020-10-28 17:28:27,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:28:27,364 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:27,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:27,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1019671772, now seen corresponding path program 2 times [2020-10-28 17:28:27,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:27,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792989668] [2020-10-28 17:28:27,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:27,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:27,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:27,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:27,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:27,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:30,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:32,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:32,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 17:28:32,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:28:32,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 17:28:32,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:32,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:32,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:28:32,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:28:32,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:28:32,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:32,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:32,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:32,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:32,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:32,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:32,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:28:32,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:32,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:32,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:32,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:32,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:32,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:32,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:28:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:32,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:32,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:32,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:32,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:32,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:32,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 17:28:32,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:32,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:32,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:32,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:28:32,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:32,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:32,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 17:28:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:32,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:32,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:32,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:32,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:32,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:32,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 17:28:32,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:32,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:32,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:32,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:28:32,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:32,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:32,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 17:28:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:32,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:32,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:32,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:32,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:32,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:32,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 17:28:32,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:32,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:28:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:32,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:28:32,631 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-28 17:28:32,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792989668] [2020-10-28 17:28:32,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:32,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:28:32,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454473373] [2020-10-28 17:28:32,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:28:32,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:32,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:28:32,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:28:32,636 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 6 states. [2020-10-28 17:28:32,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:32,743 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2020-10-28 17:28:32,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:28:32,744 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-10-28 17:28:32,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:32,744 INFO L225 Difference]: With dead ends: 78 [2020-10-28 17:28:32,745 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 17:28:32,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:28:32,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 17:28:32,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-28 17:28:32,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 17:28:32,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-10-28 17:28:32,752 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 76 [2020-10-28 17:28:32,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:32,752 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-10-28 17:28:32,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:28:32,752 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-10-28 17:28:32,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 17:28:32,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:32,754 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:28:32,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:28:32,754 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:32,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:32,755 INFO L82 PathProgramCache]: Analyzing trace with hash -426008346, now seen corresponding path program 3 times [2020-10-28 17:28:32,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:32,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40572704] [2020-10-28 17:28:32,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:32,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:32,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:32,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:32,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:32,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:32,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:35,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:37,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:37,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 17:28:37,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:28:37,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 17:28:37,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:37,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:37,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:28:37,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 17:28:37,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:28:37,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:37,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:37,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:37,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:37,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:37,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:37,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:28:37,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:37,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:37,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:37,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:37,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:37,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:37,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:28:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:37,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:37,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:37,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:37,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:37,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:37,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 17:28:37,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:37,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:37,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:37,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:37,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:37,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:37,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:28:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:37,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:37,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:37,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:37,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:37,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:37,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 17:28:37,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:37,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:37,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:37,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:28:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:37,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:37,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:37,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:37,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:37,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:37,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 17:28:37,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:37,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:37,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:37,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:28:37,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:37,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:37,986 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-28 17:28:37,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40572704] [2020-10-28 17:28:37,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:37,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:28:37,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764767204] [2020-10-28 17:28:37,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:28:37,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:37,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:28:37,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:28:37,989 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states. [2020-10-28 17:28:38,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:38,070 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2020-10-28 17:28:38,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:28:38,071 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-28 17:28:38,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:38,072 INFO L225 Difference]: With dead ends: 73 [2020-10-28 17:28:38,072 INFO L226 Difference]: Without dead ends: 48 [2020-10-28 17:28:38,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:28:38,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-28 17:28:38,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-28 17:28:38,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-28 17:28:38,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-10-28 17:28:38,079 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 78 [2020-10-28 17:28:38,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:38,079 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-10-28 17:28:38,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:28:38,080 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-10-28 17:28:38,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 17:28:38,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:38,081 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 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] [2020-10-28 17:28:38,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:28:38,081 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:38,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:38,082 INFO L82 PathProgramCache]: Analyzing trace with hash -643125436, now seen corresponding path program 4 times [2020-10-28 17:28:38,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:38,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797124657] [2020-10-28 17:28:38,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:38,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:38,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:38,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:38,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:38,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:41,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:43,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:43,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:43,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 17:28:43,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:28:43,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 17:28:43,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:43,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:28:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 17:28:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:28:43,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:43,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:43,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:43,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:43,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:43,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:43,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:28:43,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:43,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:43,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:43,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:43,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:43,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:43,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:28:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:43,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:43,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:43,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:43,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:43,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:43,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 17:28:43,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:43,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:43,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:43,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:43,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:43,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:43,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:28:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:43,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:43,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:43,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:43,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:43,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:28:43,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:43,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:43,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:28:43,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:28:43,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:28:43,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:43,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:28:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:43,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:43,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:43,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:43,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:28:43,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:43,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 17:28:43,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:43,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:43,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:43,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:28:43,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:43,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:43,354 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 46 proven. 61 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-28 17:28:43,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797124657] [2020-10-28 17:28:43,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:43,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:28:43,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055797168] [2020-10-28 17:28:43,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:28:43,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:43,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:28:43,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:28:43,356 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 7 states. [2020-10-28 17:28:43,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:43,760 INFO L93 Difference]: Finished difference Result 87 states and 105 transitions. [2020-10-28 17:28:43,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:28:43,761 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-10-28 17:28:43,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:43,762 INFO L225 Difference]: With dead ends: 87 [2020-10-28 17:28:43,762 INFO L226 Difference]: Without dead ends: 54 [2020-10-28 17:28:43,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:28:43,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-28 17:28:43,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-10-28 17:28:43,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 17:28:43,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-10-28 17:28:43,770 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 80 [2020-10-28 17:28:43,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:43,770 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-10-28 17:28:43,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:28:43,770 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-10-28 17:28:43,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 17:28:43,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:43,772 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 3, 3, 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] [2020-10-28 17:28:43,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:28:43,773 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:43,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:43,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1184767137, now seen corresponding path program 5 times [2020-10-28 17:28:43,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:43,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853012804] [2020-10-28 17:28:43,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:43,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:43,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:43,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:43,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:44,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:44,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:46,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:48,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:48,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 17:28:48,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:28:48,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 17:28:48,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:48,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:48,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:28:48,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 17:28:48,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:28:48,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:48,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:48,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:48,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:48,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:48,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:48,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:28:48,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:48,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:48,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:48,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:48,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:48,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:48,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:28:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:48,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:48,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:48,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:28:48,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:48,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:28:48,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:48,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:48,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:28:48,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:28:48,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:28:48,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:48,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 17:28:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:48,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:48,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:48,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:48,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:28:48,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:48,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 17:28:48,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:48,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:48,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:48,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:28:48,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:48,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:48,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 17:28:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:48,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:48,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:49,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:49,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:28:49,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:49,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 17:28:49,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:49,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:49,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:49,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:28:49,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:49,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:49,024 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-28 17:28:49,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853012804] [2020-10-28 17:28:49,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:49,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:28:49,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720635900] [2020-10-28 17:28:49,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:28:49,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:49,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:28:49,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:28:49,027 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 8 states. [2020-10-28 17:28:49,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:49,321 INFO L93 Difference]: Finished difference Result 95 states and 115 transitions. [2020-10-28 17:28:49,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:28:49,322 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-10-28 17:28:49,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:49,323 INFO L225 Difference]: With dead ends: 95 [2020-10-28 17:28:49,323 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 17:28:49,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:28:49,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 17:28:49,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2020-10-28 17:28:49,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 17:28:49,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-10-28 17:28:49,331 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 92 [2020-10-28 17:28:49,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:49,331 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-10-28 17:28:49,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:28:49,331 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-10-28 17:28:49,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 17:28:49,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:49,333 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 3, 3, 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] [2020-10-28 17:28:49,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:28:49,333 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:49,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:49,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1710311162, now seen corresponding path program 6 times [2020-10-28 17:28:49,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:49,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336785221] [2020-10-28 17:28:49,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:49,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:49,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:49,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:49,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:49,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:50,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:50,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:54,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:54,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 17:28:54,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:28:54,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 17:28:54,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:54,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:28:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:28:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:28:54,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:54,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:54,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:54,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:54,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:54,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:54,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:28:54,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:54,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:54,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:54,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:54,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:54,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:54,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:28:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:54,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:54,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:54,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:54,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:28:54,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:54,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 17:28:54,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:54,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:54,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:54,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:28:54,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:54,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:54,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:28:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:54,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:54,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:54,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:54,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:28:54,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:54,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 17:28:54,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:54,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:28:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:54,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:54,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:28:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:54,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:54,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:54,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:54,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:28:54,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:28:54,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 17:28:54,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:54,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:54,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:54,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:28:54,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:54,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:54,654 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2020-10-28 17:28:54,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336785221] [2020-10-28 17:28:54,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:28:54,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:28:54,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766342987] [2020-10-28 17:28:54,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:28:54,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:28:54,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:28:54,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:28:54,657 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 7 states. [2020-10-28 17:28:54,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:28:54,789 INFO L93 Difference]: Finished difference Result 100 states and 118 transitions. [2020-10-28 17:28:54,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:28:54,789 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-28 17:28:54,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:28:54,790 INFO L225 Difference]: With dead ends: 100 [2020-10-28 17:28:54,790 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 17:28:54,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:28:54,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 17:28:54,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-28 17:28:54,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 17:28:54,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-10-28 17:28:54,800 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 104 [2020-10-28 17:28:54,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:28:54,800 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-10-28 17:28:54,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:28:54,801 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-10-28 17:28:54,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 17:28:54,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:28:54,804 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 4, 4, 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] [2020-10-28 17:28:54,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 17:28:54,805 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:28:54,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:28:54,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1356694972, now seen corresponding path program 7 times [2020-10-28 17:28:54,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:28:54,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629866108] [2020-10-28 17:28:54,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:28:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:54,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:54,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:54,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:54,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:54,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:59,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:59,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 17:28:59,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:28:59,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 17:28:59,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:59,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:59,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:28:59,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:28:59,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:28:59,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:59,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:28:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:59,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:59,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:28:59,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:28:59,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:28:59,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:28:59,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:28:59,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:28:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:28:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:28:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:28:59,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:28:59,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 17:28:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:28:59,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:28:59,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:00,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:00,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:29:00,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:00,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 17:29:00,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:00,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:00,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:00,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:29:00,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:00,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:00,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:29:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:00,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:00,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:00,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:00,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:29:00,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:00,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 17:29:00,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:00,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:29:00,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:00,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:00,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:29:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:00,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:00,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:00,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:00,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:29:00,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:00,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 17:29:00,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:00,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:00,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:00,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:29:00,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:00,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:00,265 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2020-10-28 17:29:00,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629866108] [2020-10-28 17:29:00,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:00,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:29:00,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489435962] [2020-10-28 17:29:00,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:29:00,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:00,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:29:00,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:29:00,269 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 8 states. [2020-10-28 17:29:00,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:00,467 INFO L93 Difference]: Finished difference Result 102 states and 120 transitions. [2020-10-28 17:29:00,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:29:00,468 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 106 [2020-10-28 17:29:00,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:00,470 INFO L225 Difference]: With dead ends: 102 [2020-10-28 17:29:00,470 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 17:29:00,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:29:00,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 17:29:00,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-28 17:29:00,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-28 17:29:00,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2020-10-28 17:29:00,491 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 106 [2020-10-28 17:29:00,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:00,491 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2020-10-28 17:29:00,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:29:00,491 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2020-10-28 17:29:00,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 17:29:00,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:00,492 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 5, 5, 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] [2020-10-28 17:29:00,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 17:29:00,493 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:00,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:00,493 INFO L82 PathProgramCache]: Analyzing trace with hash 833952766, now seen corresponding path program 8 times [2020-10-28 17:29:00,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:00,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576298621] [2020-10-28 17:29:00,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:00,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:00,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:00,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:00,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:00,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:05,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:05,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 17:29:05,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:29:05,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 17:29:05,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:05,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:05,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:29:05,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-28 17:29:05,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:29:05,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:05,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:05,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:05,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:05,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:05,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:05,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:05,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:05,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:05,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:05,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:05,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:05,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:05,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:29:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:05,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:05,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:05,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:05,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:29:05,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:05,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 17:29:05,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:05,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:05,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:05,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:05,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:05,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:05,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 17:29:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:05,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:05,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:05,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:05,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:29:05,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:05,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 17:29:05,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:05,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:05,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:05,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:05,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:05,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:05,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 17:29:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:05,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:05,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:05,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:05,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:29:05,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:05,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 17:29:05,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:05,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:05,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:05,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:29:05,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:05,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:05,858 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2020-10-28 17:29:05,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576298621] [2020-10-28 17:29:05,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:05,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:29:05,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361540019] [2020-10-28 17:29:05,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:29:05,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:05,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:29:05,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:29:05,861 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand 6 states. [2020-10-28 17:29:06,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:06,016 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2020-10-28 17:29:06,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:29:06,017 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2020-10-28 17:29:06,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:06,018 INFO L225 Difference]: With dead ends: 95 [2020-10-28 17:29:06,018 INFO L226 Difference]: Without dead ends: 62 [2020-10-28 17:29:06,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:29:06,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-28 17:29:06,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-28 17:29:06,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 17:29:06,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2020-10-28 17:29:06,029 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 108 [2020-10-28 17:29:06,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:06,031 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2020-10-28 17:29:06,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:29:06,032 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2020-10-28 17:29:06,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 17:29:06,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:06,034 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:29:06,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 17:29:06,034 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:06,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:06,039 INFO L82 PathProgramCache]: Analyzing trace with hash -909497380, now seen corresponding path program 9 times [2020-10-28 17:29:06,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:06,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116280374] [2020-10-28 17:29:06,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:06,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:06,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:06,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:06,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:06,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:11,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:11,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 17:29:11,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:29:11,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 17:29:11,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:11,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:11,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:29:11,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 17:29:11,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:29:11,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:11,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:11,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:11,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:11,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:11,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:11,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:11,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:11,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:11,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:11,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:11,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:11,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:11,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:29:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:11,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:11,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:11,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:29:11,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:11,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 17:29:11,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:11,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:11,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:29:11,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:29:11,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:29:11,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:11,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 17:29:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:11,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:11,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:11,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:11,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:29:11,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:11,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 17:29:11,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:11,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:11,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:11,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:29:11,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:11,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:11,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:29:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:11,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:11,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:11,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:11,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 17:29:11,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:11,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 17:29:11,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:11,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:11,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:11,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 17:29:11,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:11,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:29:11,475 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2020-10-28 17:29:11,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116280374] [2020-10-28 17:29:11,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:11,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:29:11,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509986822] [2020-10-28 17:29:11,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:29:11,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:11,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:29:11,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:29:11,477 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand 9 states. [2020-10-28 17:29:11,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:11,919 INFO L93 Difference]: Finished difference Result 111 states and 133 transitions. [2020-10-28 17:29:11,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:29:11,919 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 110 [2020-10-28 17:29:11,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:11,920 INFO L225 Difference]: With dead ends: 111 [2020-10-28 17:29:11,921 INFO L226 Difference]: Without dead ends: 68 [2020-10-28 17:29:11,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:29:11,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-28 17:29:11,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2020-10-28 17:29:11,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-28 17:29:11,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2020-10-28 17:29:11,937 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 110 [2020-10-28 17:29:11,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:11,937 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2020-10-28 17:29:11,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:29:11,937 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2020-10-28 17:29:11,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 17:29:11,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:11,939 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:29:11,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 17:29:11,939 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:11,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:11,940 INFO L82 PathProgramCache]: Analyzing trace with hash -2112380425, now seen corresponding path program 10 times [2020-10-28 17:29:11,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:11,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812743551] [2020-10-28 17:29:11,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:11,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:12,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:12,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:12,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:12,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:16,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:16,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 17:29:16,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:29:16,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 17:29:16,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:16,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:16,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:29:16,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 17:29:16,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 17:29:16,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:17,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:17,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:17,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:17,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:17,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:17,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:17,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:17,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:17,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:17,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:17,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:17,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:29:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:17,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:17,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:29:17,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:17,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 17:29:17,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:17,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:17,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:29:17,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:29:17,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 17:29:17,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:17,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:29:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:17,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:17,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:29:17,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:17,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 17:29:17,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:17,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:17,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:17,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 17:29:17,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:17,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:17,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:29:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:17,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:17,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:29:17,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:17,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 17:29:17,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:17,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 17:29:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:17,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2020-10-28 17:29:17,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812743551] [2020-10-28 17:29:17,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:17,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:29:17,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274486906] [2020-10-28 17:29:17,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:29:17,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:17,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:29:17,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:29:17,379 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand 10 states. [2020-10-28 17:29:17,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:17,733 INFO L93 Difference]: Finished difference Result 119 states and 143 transitions. [2020-10-28 17:29:17,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:29:17,733 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 122 [2020-10-28 17:29:17,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:17,734 INFO L225 Difference]: With dead ends: 119 [2020-10-28 17:29:17,734 INFO L226 Difference]: Without dead ends: 72 [2020-10-28 17:29:17,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:29:17,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-28 17:29:17,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2020-10-28 17:29:17,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-28 17:29:17,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 80 transitions. [2020-10-28 17:29:17,740 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 80 transitions. Word has length 122 [2020-10-28 17:29:17,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:17,741 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 80 transitions. [2020-10-28 17:29:17,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:29:17,741 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 80 transitions. [2020-10-28 17:29:17,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 17:29:17,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:17,742 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:29:17,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 17:29:17,743 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:17,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:17,743 INFO L82 PathProgramCache]: Analyzing trace with hash 2130708370, now seen corresponding path program 11 times [2020-10-28 17:29:17,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:17,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757545304] [2020-10-28 17:29:17,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:17,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:17,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:22,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:22,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 17:29:22,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:29:22,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 17:29:22,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:22,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:22,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:29:22,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:29:22,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:29:22,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:22,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:22,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:22,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:22,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:22,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:22,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:22,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:22,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:22,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:22,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:22,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:22,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:22,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:29:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:22,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:22,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:22,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:22,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:29:22,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:22,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 17:29:22,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:22,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:29:22,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:22,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:22,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 17:29:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:22,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:22,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:23,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:23,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:29:23,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:23,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 17:29:23,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:23,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:23,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:23,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:29:23,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:23,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:23,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 17:29:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:23,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:23,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:23,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:23,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:29:23,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:23,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 17:29:23,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:23,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:23,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:23,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:29:23,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:23,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:23,125 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 927 trivial. 0 not checked. [2020-10-28 17:29:23,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757545304] [2020-10-28 17:29:23,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:23,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:29:23,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032661063] [2020-10-28 17:29:23,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:29:23,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:23,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:29:23,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:29:23,127 INFO L87 Difference]: Start difference. First operand 69 states and 80 transitions. Second operand 9 states. [2020-10-28 17:29:23,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:23,248 INFO L93 Difference]: Finished difference Result 124 states and 146 transitions. [2020-10-28 17:29:23,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:29:23,248 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 134 [2020-10-28 17:29:23,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:23,250 INFO L225 Difference]: With dead ends: 124 [2020-10-28 17:29:23,250 INFO L226 Difference]: Without dead ends: 72 [2020-10-28 17:29:23,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:29:23,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-28 17:29:23,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-28 17:29:23,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-28 17:29:23,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2020-10-28 17:29:23,261 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 134 [2020-10-28 17:29:23,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:23,261 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2020-10-28 17:29:23,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:29:23,262 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2020-10-28 17:29:23,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 17:29:23,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:23,266 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:29:23,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 17:29:23,266 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:23,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:23,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1110210860, now seen corresponding path program 12 times [2020-10-28 17:29:23,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:23,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482971287] [2020-10-28 17:29:23,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:23,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:23,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:23,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:23,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:23,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:28,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:28,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 17:29:28,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:29:28,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 17:29:28,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:28,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:28,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:29:28,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:29:28,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:29:28,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:28,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:28,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:28,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:28,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:28,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:28,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:28,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:28,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:28,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:28,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:28,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:28,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:28,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 17:29:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:28,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:28,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:28,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:28,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:29:28,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:28,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 17:29:28,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:28,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:28,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:28,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:29:28,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:28,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:28,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:29:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:28,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:28,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:28,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:28,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:29:28,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:28,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 17:29:28,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:28,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:28,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:28,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:29:28,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:28,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:28,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 17:29:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:28,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:28,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:28,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:28,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:29:28,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:28,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 17:29:28,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:28,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:28,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:28,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:29:28,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:28,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 927 trivial. 0 not checked. [2020-10-28 17:29:28,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482971287] [2020-10-28 17:29:28,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:28,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:29:28,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501396212] [2020-10-28 17:29:28,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:29:28,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:28,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:29:28,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:29:28,711 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand 10 states. [2020-10-28 17:29:28,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:28,835 INFO L93 Difference]: Finished difference Result 126 states and 148 transitions. [2020-10-28 17:29:28,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:29:28,836 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 136 [2020-10-28 17:29:28,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:28,837 INFO L225 Difference]: With dead ends: 126 [2020-10-28 17:29:28,837 INFO L226 Difference]: Without dead ends: 74 [2020-10-28 17:29:28,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:29:28,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-28 17:29:28,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-28 17:29:28,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-28 17:29:28,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2020-10-28 17:29:28,845 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 136 [2020-10-28 17:29:28,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:28,846 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2020-10-28 17:29:28,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:29:28,846 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2020-10-28 17:29:28,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-28 17:29:28,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:28,847 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 7, 7, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:29:28,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 17:29:28,848 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:28,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:28,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1782301290, now seen corresponding path program 13 times [2020-10-28 17:29:28,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:28,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168543798] [2020-10-28 17:29:28,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:28,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:28,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:28,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:28,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:28,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:33,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:33,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-28 17:29:33,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:29:33,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 17:29:33,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:33,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:33,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:29:33,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-28 17:29:33,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:29:33,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:33,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:33,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:33,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:33,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:33,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:33,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:33,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:33,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:33,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:33,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:33,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:33,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:33,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 17:29:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:33,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:33,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:34,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:34,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:29:34,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:34,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 17:29:34,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:34,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:34,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:34,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:34,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:34,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:34,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:29:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:34,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:34,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:34,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:34,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:29:34,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:34,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 17:29:34,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:34,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:34,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:34,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 17:29:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:34,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:34,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:34,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:34,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:29:34,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:34,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 17:29:34,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:34,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:34,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:34,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:29:34,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:34,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:34,188 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2020-10-28 17:29:34,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168543798] [2020-10-28 17:29:34,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:34,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:29:34,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488620981] [2020-10-28 17:29:34,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:29:34,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:34,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:29:34,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:29:34,190 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand 7 states. [2020-10-28 17:29:34,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:34,335 INFO L93 Difference]: Finished difference Result 117 states and 136 transitions. [2020-10-28 17:29:34,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:29:34,335 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-10-28 17:29:34,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:34,336 INFO L225 Difference]: With dead ends: 117 [2020-10-28 17:29:34,336 INFO L226 Difference]: Without dead ends: 76 [2020-10-28 17:29:34,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:29:34,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-28 17:29:34,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-28 17:29:34,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-28 17:29:34,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2020-10-28 17:29:34,342 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 138 [2020-10-28 17:29:34,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:34,343 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2020-10-28 17:29:34,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:29:34,343 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2020-10-28 17:29:34,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-28 17:29:34,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:34,345 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:29:34,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 17:29:34,345 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:34,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:34,346 INFO L82 PathProgramCache]: Analyzing trace with hash 519057140, now seen corresponding path program 14 times [2020-10-28 17:29:34,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:34,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357497261] [2020-10-28 17:29:34,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:34,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:34,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:34,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:34,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:34,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:39,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:39,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 17:29:39,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:29:39,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 17:29:39,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:39,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:39,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:29:39,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 17:29:39,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 17:29:39,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:39,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:39,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:39,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:39,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:39,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:39,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:39,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:39,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:39,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:39,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:39,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:39,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:39,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 17:29:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:39,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:39,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:39,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:29:39,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:39,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 17:29:39,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:39,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:39,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:29:39,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:29:39,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 17:29:39,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:39,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:29:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:39,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:39,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:39,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:39,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:29:39,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:39,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 17:29:39,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:39,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:39,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:39,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:29:39,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:39,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:39,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 17:29:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:39,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:39,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:39,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:39,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 17:29:39,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:39,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 17:29:39,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:39,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:39,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:39,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:29:39,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:39,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 0 proven. 519 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2020-10-28 17:29:39,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357497261] [2020-10-28 17:29:39,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:39,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:29:39,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060011210] [2020-10-28 17:29:39,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:29:39,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:39,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:29:39,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:29:39,750 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand 11 states. [2020-10-28 17:29:40,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:40,174 INFO L93 Difference]: Finished difference Result 135 states and 161 transitions. [2020-10-28 17:29:40,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:29:40,174 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 140 [2020-10-28 17:29:40,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:40,176 INFO L225 Difference]: With dead ends: 135 [2020-10-28 17:29:40,176 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 17:29:40,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:29:40,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 17:29:40,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-10-28 17:29:40,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-28 17:29:40,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2020-10-28 17:29:40,183 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 140 [2020-10-28 17:29:40,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:40,183 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2020-10-28 17:29:40,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:29:40,183 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2020-10-28 17:29:40,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 17:29:40,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:40,185 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:29:40,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 17:29:40,185 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:40,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:40,186 INFO L82 PathProgramCache]: Analyzing trace with hash 935831311, now seen corresponding path program 15 times [2020-10-28 17:29:40,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:40,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329855167] [2020-10-28 17:29:40,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:40,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:40,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:40,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:40,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:40,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:45,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:45,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 17:29:45,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:29:45,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 17:29:45,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:45,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:45,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:29:45,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:29:45,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:29:45,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:45,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:45,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:45,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:45,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:45,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:45,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:29:45,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:45,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:45,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:45,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:45,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:45,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:45,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 17:29:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:45,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:45,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:45,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:45,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:29:45,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:45,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 17:29:45,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:45,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:45,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:45,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 17:29:45,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:45,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:45,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:29:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:45,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:45,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:45,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:45,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:29:45,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:45,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 17:29:45,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:45,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:45,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:45,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 17:29:45,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:45,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:45,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-28 17:29:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:45,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:45,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:45,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:45,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:29:45,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:45,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 17:29:45,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:45,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:45,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:45,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 17:29:45,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:45,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1207 trivial. 0 not checked. [2020-10-28 17:29:45,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329855167] [2020-10-28 17:29:45,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:45,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:29:45,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939203318] [2020-10-28 17:29:45,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:29:45,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:45,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:29:45,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:29:45,745 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand 11 states. [2020-10-28 17:29:45,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:45,918 INFO L93 Difference]: Finished difference Result 140 states and 164 transitions. [2020-10-28 17:29:45,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:29:45,918 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 152 [2020-10-28 17:29:45,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:45,919 INFO L225 Difference]: With dead ends: 140 [2020-10-28 17:29:45,919 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 17:29:45,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:29:45,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 17:29:45,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-28 17:29:45,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-28 17:29:45,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2020-10-28 17:29:45,931 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 152 [2020-10-28 17:29:45,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:45,931 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2020-10-28 17:29:45,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:29:45,931 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2020-10-28 17:29:45,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 17:29:45,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:45,935 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 8, 8, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:29:45,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 17:29:45,935 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:45,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:45,936 INFO L82 PathProgramCache]: Analyzing trace with hash 340171217, now seen corresponding path program 16 times [2020-10-28 17:29:45,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:45,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346663701] [2020-10-28 17:29:45,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:45,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:46,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:46,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:46,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:46,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:50,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:50,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 17:29:50,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:29:50,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 17:29:50,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:50,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:50,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:29:50,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 17:29:50,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:29:50,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:51,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:51,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:51,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:51,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:51,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:51,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:51,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:51,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:51,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:51,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:51,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:51,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:51,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:29:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:51,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:51,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:51,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:51,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:29:51,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:51,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 17:29:51,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:51,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:51,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:51,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:51,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:51,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:51,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:29:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:51,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:51,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:51,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:51,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:29:51,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:51,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 17:29:51,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:51,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:51,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:51,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:51,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:51,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:51,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 17:29:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:51,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:51,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:51,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:51,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:29:51,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:51,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 17:29:51,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:51,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:51,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:51,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 17:29:51,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:51,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:51,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1255 trivial. 0 not checked. [2020-10-28 17:29:51,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346663701] [2020-10-28 17:29:51,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:51,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:29:51,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604661672] [2020-10-28 17:29:51,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:29:51,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:51,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:29:51,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:29:51,386 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand 8 states. [2020-10-28 17:29:51,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:51,525 INFO L93 Difference]: Finished difference Result 129 states and 150 transitions. [2020-10-28 17:29:51,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:29:51,529 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 154 [2020-10-28 17:29:51,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:51,531 INFO L225 Difference]: With dead ends: 129 [2020-10-28 17:29:51,531 INFO L226 Difference]: Without dead ends: 84 [2020-10-28 17:29:51,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:29:51,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-28 17:29:51,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-28 17:29:51,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-28 17:29:51,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2020-10-28 17:29:51,537 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 154 [2020-10-28 17:29:51,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:51,537 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2020-10-28 17:29:51,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:29:51,537 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2020-10-28 17:29:51,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 17:29:51,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:51,542 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:29:51,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 17:29:51,543 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:51,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:51,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1411052497, now seen corresponding path program 17 times [2020-10-28 17:29:51,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:51,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602166906] [2020-10-28 17:29:51,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:51,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:51,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:51,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:51,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:51,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:56,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:56,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 17:29:56,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:29:56,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 17:29:56,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:56,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:29:56,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 17:29:56,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 17:29:56,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:56,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:29:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:56,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:56,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:56,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:29:56,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:56,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:29:56,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:56,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:56,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:56,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:29:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:56,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:56,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:56,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:56,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:29:56,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:56,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 17:29:56,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:56,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:56,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:56,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:29:56,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:56,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:56,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:29:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:56,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:56,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:56,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:29:56,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:29:56,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 17:29:56,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:56,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:56,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:29:56,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:29:56,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 17:29:56,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:56,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 17:29:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:56,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:56,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:57,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:29:57,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:29:57,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:29:57,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 17:29:57,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:29:57,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:29:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:29:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 17:29:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:29:57,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:29:57,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 276 proven. 396 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2020-10-28 17:29:57,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602166906] [2020-10-28 17:29:57,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:29:57,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 17:29:57,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674331032] [2020-10-28 17:29:57,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:29:57,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:29:57,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:29:57,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:29:57,045 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand 12 states. [2020-10-28 17:29:57,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:29:57,584 INFO L93 Difference]: Finished difference Result 149 states and 177 transitions. [2020-10-28 17:29:57,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:29:57,586 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 156 [2020-10-28 17:29:57,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:29:57,588 INFO L225 Difference]: With dead ends: 149 [2020-10-28 17:29:57,588 INFO L226 Difference]: Without dead ends: 90 [2020-10-28 17:29:57,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-28 17:29:57,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-28 17:29:57,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2020-10-28 17:29:57,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-28 17:29:57,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 100 transitions. [2020-10-28 17:29:57,594 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 100 transitions. Word has length 156 [2020-10-28 17:29:57,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:29:57,595 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 100 transitions. [2020-10-28 17:29:57,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:29:57,595 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 100 transitions. [2020-10-28 17:29:57,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 17:29:57,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:29:57,596 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:29:57,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 17:29:57,596 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:29:57,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:29:57,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1230493238, now seen corresponding path program 18 times [2020-10-28 17:29:57,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:29:57,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59146262] [2020-10-28 17:29:57,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:29:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:29:57,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:57,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:57,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:29:57,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:00,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:01,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:02,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:02,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-28 17:30:02,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:30:02,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 17:30:02,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:02,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:02,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:30:02,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-28 17:30:02,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:30:02,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:02,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:02,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:02,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:02,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:02,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:02,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:02,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:02,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:02,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:02,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:02,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:02,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:02,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:30:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:02,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:02,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:02,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:02,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 17:30:02,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:02,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 17:30:02,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:02,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:02,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:02,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:30:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:02,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:02,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:02,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 17:30:02,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:02,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 17:30:02,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:02,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:02,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:30:02,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:30:02,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:30:02,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:02,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 17:30:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:03,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:03,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:03,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:03,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 17:30:03,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:03,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-28 17:30:03,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:03,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:03,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 17:30:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:03,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:03,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1589 backedges. 346 proven. 499 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2020-10-28 17:30:03,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59146262] [2020-10-28 17:30:03,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:03,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 17:30:03,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184203395] [2020-10-28 17:30:03,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:30:03,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:03,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:30:03,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:30:03,154 INFO L87 Difference]: Start difference. First operand 87 states and 100 transitions. Second operand 13 states. [2020-10-28 17:30:03,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:03,707 INFO L93 Difference]: Finished difference Result 157 states and 187 transitions. [2020-10-28 17:30:03,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:30:03,707 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 168 [2020-10-28 17:30:03,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:03,709 INFO L225 Difference]: With dead ends: 157 [2020-10-28 17:30:03,709 INFO L226 Difference]: Without dead ends: 94 [2020-10-28 17:30:03,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:30:03,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-28 17:30:03,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2020-10-28 17:30:03,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-28 17:30:03,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2020-10-28 17:30:03,717 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 168 [2020-10-28 17:30:03,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:03,717 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2020-10-28 17:30:03,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:30:03,717 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2020-10-28 17:30:03,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-28 17:30:03,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:03,719 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:30:03,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 17:30:03,719 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:03,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:03,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1515681509, now seen corresponding path program 19 times [2020-10-28 17:30:03,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:03,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586638688] [2020-10-28 17:30:03,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:03,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:03,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:03,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:03,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:03,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:08,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:08,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 17:30:08,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:30:08,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 17:30:08,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:08,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:08,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:30:08,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:30:08,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:30:08,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:08,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:08,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:08,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:08,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:08,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:08,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:08,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:08,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:08,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:08,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:08,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:08,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:08,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:30:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:08,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:08,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:09,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:09,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:09,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:09,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 17:30:09,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:09,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:09,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:09,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:30:09,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:09,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:09,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:30:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:09,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:09,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:09,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:09,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:09,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:09,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 17:30:09,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:09,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:09,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:09,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:30:09,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:09,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:09,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-28 17:30:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:09,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:09,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:09,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:09,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:09,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:09,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-28 17:30:09,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:09,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:09,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:09,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:30:09,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:09,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:09,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1934 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1870 trivial. 0 not checked. [2020-10-28 17:30:09,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586638688] [2020-10-28 17:30:09,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:09,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 17:30:09,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706942139] [2020-10-28 17:30:09,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:30:09,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:09,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:30:09,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:30:09,358 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand 12 states. [2020-10-28 17:30:09,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:09,552 INFO L93 Difference]: Finished difference Result 162 states and 190 transitions. [2020-10-28 17:30:09,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:30:09,553 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 180 [2020-10-28 17:30:09,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:09,554 INFO L225 Difference]: With dead ends: 162 [2020-10-28 17:30:09,554 INFO L226 Difference]: Without dead ends: 94 [2020-10-28 17:30:09,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:30:09,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-28 17:30:09,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-28 17:30:09,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-28 17:30:09,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2020-10-28 17:30:09,562 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 180 [2020-10-28 17:30:09,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:09,563 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2020-10-28 17:30:09,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:30:09,563 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2020-10-28 17:30:09,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-28 17:30:09,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:09,564 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 9, 9, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:30:09,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 17:30:09,565 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:09,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:09,565 INFO L82 PathProgramCache]: Analyzing trace with hash -2107469145, now seen corresponding path program 20 times [2020-10-28 17:30:09,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:09,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734359655] [2020-10-28 17:30:09,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:09,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:09,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:09,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:09,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:12,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:13,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:14,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:14,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:14,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 17:30:14,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:30:14,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 17:30:14,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:14,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:14,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:30:14,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:30:14,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 17:30:14,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:14,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:14,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:14,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:14,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:14,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:14,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:14,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:14,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:14,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:14,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:14,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:14,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:14,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:30:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:14,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:14,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:14,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:14,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:14,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:14,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 17:30:14,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:14,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:14,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:14,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:30:14,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:14,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:14,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 17:30:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:14,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:14,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:15,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:15,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:15,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:15,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 17:30:15,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:15,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:15,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:15,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:30:15,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:15,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:15,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-28 17:30:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:15,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:15,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:15,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:15,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:15,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:15,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 17:30:15,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:15,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:30:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:15,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:15,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1951 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1870 trivial. 0 not checked. [2020-10-28 17:30:15,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734359655] [2020-10-28 17:30:15,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:15,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 17:30:15,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068539605] [2020-10-28 17:30:15,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:30:15,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:15,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:30:15,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:30:15,161 INFO L87 Difference]: Start difference. First operand 93 states and 107 transitions. Second operand 13 states. [2020-10-28 17:30:15,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:15,313 INFO L93 Difference]: Finished difference Result 164 states and 192 transitions. [2020-10-28 17:30:15,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:30:15,313 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 182 [2020-10-28 17:30:15,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:15,314 INFO L225 Difference]: With dead ends: 164 [2020-10-28 17:30:15,314 INFO L226 Difference]: Without dead ends: 96 [2020-10-28 17:30:15,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:30:15,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-28 17:30:15,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-28 17:30:15,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-28 17:30:15,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2020-10-28 17:30:15,321 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 182 [2020-10-28 17:30:15,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:15,322 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2020-10-28 17:30:15,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:30:15,322 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2020-10-28 17:30:15,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-28 17:30:15,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:15,323 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:30:15,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 17:30:15,323 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:15,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:15,324 INFO L82 PathProgramCache]: Analyzing trace with hash -736770583, now seen corresponding path program 21 times [2020-10-28 17:30:15,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:15,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777021790] [2020-10-28 17:30:15,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:15,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:15,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:15,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:15,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:18,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:19,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:20,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:20,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-28 17:30:20,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:30:20,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-28 17:30:20,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:20,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:20,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:30:20,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-28 17:30:20,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:30:20,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:20,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:20,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:20,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:20,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:20,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:20,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:20,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:20,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:20,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:20,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:20,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:20,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:20,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:30:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:20,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:20,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:20,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:20,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:20,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:20,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 17:30:20,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:20,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:20,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:20,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:20,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:20,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:20,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 17:30:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:20,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:20,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:20,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:20,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:20,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:20,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 17:30:20,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:20,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:20,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:20,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:20,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:20,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:20,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 17:30:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:20,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:20,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:20,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:20,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:20,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:20,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 17:30:20,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:20,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:20,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:20,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:30:20,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:20,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:20,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2020-10-28 17:30:20,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777021790] [2020-10-28 17:30:20,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:20,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:30:20,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464753447] [2020-10-28 17:30:20,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:30:20,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:20,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:30:20,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:30:20,914 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand 9 states. [2020-10-28 17:30:21,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:21,076 INFO L93 Difference]: Finished difference Result 151 states and 176 transitions. [2020-10-28 17:30:21,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:30:21,076 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 184 [2020-10-28 17:30:21,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:21,077 INFO L225 Difference]: With dead ends: 151 [2020-10-28 17:30:21,077 INFO L226 Difference]: Without dead ends: 98 [2020-10-28 17:30:21,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:30:21,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-28 17:30:21,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-28 17:30:21,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-28 17:30:21,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2020-10-28 17:30:21,085 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 184 [2020-10-28 17:30:21,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:21,085 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2020-10-28 17:30:21,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:30:21,085 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2020-10-28 17:30:21,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-28 17:30:21,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:21,086 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:30:21,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 17:30:21,087 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:21,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:21,087 INFO L82 PathProgramCache]: Analyzing trace with hash 626211271, now seen corresponding path program 22 times [2020-10-28 17:30:21,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:21,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591183648] [2020-10-28 17:30:21,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:21,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:21,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:21,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:21,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:21,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:26,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:26,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-28 17:30:26,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:30:26,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 17:30:26,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:26,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:26,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:30:26,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 17:30:26,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 17:30:26,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:26,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:26,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:26,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:26,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:26,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:26,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:26,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:26,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:26,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:26,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:26,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:26,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:26,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:30:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:26,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:26,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:26,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:26,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:26,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:26,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 17:30:26,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:26,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:26,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:26,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:26,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:26,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:26,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 17:30:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:26,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:26,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:26,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:26,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:26,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 17:30:26,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:26,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:26,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:30:26,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:30:26,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 17:30:26,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:26,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-28 17:30:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:26,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:26,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:26,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:26,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:26,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:26,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-28 17:30:26,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:26,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 17:30:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:26,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:26,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 424 proven. 614 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2020-10-28 17:30:26,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591183648] [2020-10-28 17:30:26,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:26,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 17:30:26,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985853866] [2020-10-28 17:30:26,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 17:30:26,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:26,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 17:30:26,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:30:26,787 INFO L87 Difference]: Start difference. First operand 97 states and 111 transitions. Second operand 14 states. [2020-10-28 17:30:27,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:27,342 INFO L93 Difference]: Finished difference Result 173 states and 205 transitions. [2020-10-28 17:30:27,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:30:27,343 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 186 [2020-10-28 17:30:27,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:27,344 INFO L225 Difference]: With dead ends: 173 [2020-10-28 17:30:27,344 INFO L226 Difference]: Without dead ends: 104 [2020-10-28 17:30:27,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-28 17:30:27,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-28 17:30:27,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2020-10-28 17:30:27,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-28 17:30:27,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2020-10-28 17:30:27,356 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 186 [2020-10-28 17:30:27,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:27,356 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2020-10-28 17:30:27,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 17:30:27,356 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2020-10-28 17:30:27,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-28 17:30:27,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:27,358 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:30:27,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 17:30:27,358 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:27,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:27,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1566451358, now seen corresponding path program 23 times [2020-10-28 17:30:27,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:27,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199097506] [2020-10-28 17:30:27,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:27,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:27,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:27,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:27,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:27,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:32,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:32,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-28 17:30:32,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:30:32,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-28 17:30:32,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:32,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:32,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:30:32,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:30:32,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:30:32,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:32,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:32,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:32,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:32,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:32,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:32,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:32,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:32,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:32,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:32,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:32,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:32,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:32,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:30:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:32,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:32,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:32,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:32,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 17:30:32,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:32,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 17:30:32,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:32,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:32,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:32,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 17:30:32,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:32,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:32,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 17:30:32,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:32,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:32,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:32,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:32,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 17:30:32,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:32,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 17:30:32,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:32,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:32,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:32,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 17:30:32,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:32,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:32,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-28 17:30:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:32,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:32,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:33,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:33,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 17:30:33,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:33,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 17:30:33,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:33,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 17:30:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:33,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:33,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2362 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2262 trivial. 0 not checked. [2020-10-28 17:30:33,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199097506] [2020-10-28 17:30:33,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:33,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 17:30:33,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966962984] [2020-10-28 17:30:33,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 17:30:33,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:33,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 17:30:33,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:30:33,116 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand 14 states. [2020-10-28 17:30:33,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:33,332 INFO L93 Difference]: Finished difference Result 178 states and 208 transitions. [2020-10-28 17:30:33,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:30:33,332 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 198 [2020-10-28 17:30:33,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:33,333 INFO L225 Difference]: With dead ends: 178 [2020-10-28 17:30:33,333 INFO L226 Difference]: Without dead ends: 104 [2020-10-28 17:30:33,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:30:33,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-28 17:30:33,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-28 17:30:33,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-28 17:30:33,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 118 transitions. [2020-10-28 17:30:33,344 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 118 transitions. Word has length 198 [2020-10-28 17:30:33,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:33,344 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 118 transitions. [2020-10-28 17:30:33,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 17:30:33,345 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 118 transitions. [2020-10-28 17:30:33,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-28 17:30:33,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:33,346 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 11, 11, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:30:33,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 17:30:33,346 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:33,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:33,347 INFO L82 PathProgramCache]: Analyzing trace with hash -782612316, now seen corresponding path program 24 times [2020-10-28 17:30:33,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:33,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670078431] [2020-10-28 17:30:33,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:33,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:33,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:33,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:33,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:33,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:38,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:38,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-28 17:30:38,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:30:38,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 17:30:38,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:38,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:38,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:30:38,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 17:30:38,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:30:38,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:38,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:38,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:38,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:38,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:38,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:38,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:38,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:38,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:38,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:38,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:38,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:38,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:38,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 17:30:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:38,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:38,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:38,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:38,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 17:30:38,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:38,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 17:30:38,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:38,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:38,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:38,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:38,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:38,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:38,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:30:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:38,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:38,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:38,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:38,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 17:30:38,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:38,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-28 17:30:38,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:38,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:38,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:38,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-28 17:30:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:38,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:38,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:39,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:39,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 17:30:39,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:39,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-28 17:30:39,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:39,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:39,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:39,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 17:30:39,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:39,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:39,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2383 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 2347 trivial. 0 not checked. [2020-10-28 17:30:39,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670078431] [2020-10-28 17:30:39,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:39,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:30:39,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389064842] [2020-10-28 17:30:39,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:30:39,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:39,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:30:39,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:30:39,068 INFO L87 Difference]: Start difference. First operand 103 states and 118 transitions. Second operand 10 states. [2020-10-28 17:30:39,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:39,196 INFO L93 Difference]: Finished difference Result 163 states and 190 transitions. [2020-10-28 17:30:39,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:30:39,197 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 200 [2020-10-28 17:30:39,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:39,198 INFO L225 Difference]: With dead ends: 163 [2020-10-28 17:30:39,198 INFO L226 Difference]: Without dead ends: 106 [2020-10-28 17:30:39,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:30:39,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-28 17:30:39,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-28 17:30:39,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-28 17:30:39,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2020-10-28 17:30:39,205 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 200 [2020-10-28 17:30:39,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:39,206 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2020-10-28 17:30:39,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:30:39,206 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2020-10-28 17:30:39,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-28 17:30:39,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:39,207 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 11, 11, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:30:39,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 17:30:39,208 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:39,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:39,208 INFO L82 PathProgramCache]: Analyzing trace with hash 880999810, now seen corresponding path program 25 times [2020-10-28 17:30:39,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:39,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839336574] [2020-10-28 17:30:39,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:39,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:39,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:39,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:39,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:39,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:44,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:44,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-28 17:30:44,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:30:44,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 17:30:44,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:44,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:44,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:30:44,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-28 17:30:44,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 17:30:44,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:44,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:44,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:44,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:44,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:44,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:44,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:44,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:44,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:44,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:44,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:44,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:44,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:44,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 17:30:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:44,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:44,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:44,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:44,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 17:30:44,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:44,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 17:30:44,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:44,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:44,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:44,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:44,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:44,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:44,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:30:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:44,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:44,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:44,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 17:30:44,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:44,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 17:30:44,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:44,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:44,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:30:44,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:30:44,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 17:30:44,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:44,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-28 17:30:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:44,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:44,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:44,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:44,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 17:30:44,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:44,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 17:30:44,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:44,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:44,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:44,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 17:30:44,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:44,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:44,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2396 backedges. 510 proven. 741 refuted. 0 times theorem prover too weak. 1145 trivial. 0 not checked. [2020-10-28 17:30:44,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839336574] [2020-10-28 17:30:44,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:44,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:30:44,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871369699] [2020-10-28 17:30:44,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:30:44,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:44,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:30:44,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:30:44,952 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand 15 states. [2020-10-28 17:30:45,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:45,610 INFO L93 Difference]: Finished difference Result 187 states and 221 transitions. [2020-10-28 17:30:45,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:30:45,611 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 202 [2020-10-28 17:30:45,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:45,612 INFO L225 Difference]: With dead ends: 187 [2020-10-28 17:30:45,612 INFO L226 Difference]: Without dead ends: 112 [2020-10-28 17:30:45,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-28 17:30:45,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-28 17:30:45,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2020-10-28 17:30:45,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-28 17:30:45,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2020-10-28 17:30:45,620 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 202 [2020-10-28 17:30:45,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:45,620 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2020-10-28 17:30:45,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:30:45,620 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2020-10-28 17:30:45,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-28 17:30:45,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:45,622 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 11, 11, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:30:45,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 17:30:45,622 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:45,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:45,622 INFO L82 PathProgramCache]: Analyzing trace with hash -299613539, now seen corresponding path program 26 times [2020-10-28 17:30:45,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:45,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843695363] [2020-10-28 17:30:45,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:45,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:45,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:45,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:45,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:50,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:50,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-28 17:30:50,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:30:50,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-28 17:30:50,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:50,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:50,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:30:50,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-28 17:30:50,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 17:30:50,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:50,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:50,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:50,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:50,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:50,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:50,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:50,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:50,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:50,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:50,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:50,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:50,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:50,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 17:30:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:50,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:50,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:50,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:50,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 17:30:50,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:50,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-28 17:30:50,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:50,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:50,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:50,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:50,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:50,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:50,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 17:30:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:50,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:51,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:51,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 17:30:51,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:51,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-28 17:30:51,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:51,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:51,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:30:51,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:30:51,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 17:30:51,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:51,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 17:30:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:51,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:51,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:51,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:51,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 17:30:51,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:51,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 17:30:51,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:51,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:51,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:51,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 17:30:51,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:51,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2813 backedges. 604 proven. 880 refuted. 0 times theorem prover too weak. 1329 trivial. 0 not checked. [2020-10-28 17:30:51,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843695363] [2020-10-28 17:30:51,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:51,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 17:30:51,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742478953] [2020-10-28 17:30:51,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 17:30:51,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:51,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 17:30:51,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:30:51,427 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand 16 states. [2020-10-28 17:30:52,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:52,165 INFO L93 Difference]: Finished difference Result 195 states and 231 transitions. [2020-10-28 17:30:52,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:30:52,165 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 214 [2020-10-28 17:30:52,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:52,167 INFO L225 Difference]: With dead ends: 195 [2020-10-28 17:30:52,167 INFO L226 Difference]: Without dead ends: 116 [2020-10-28 17:30:52,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-28 17:30:52,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-28 17:30:52,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2020-10-28 17:30:52,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-28 17:30:52,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 130 transitions. [2020-10-28 17:30:52,182 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 130 transitions. Word has length 214 [2020-10-28 17:30:52,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:52,182 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 130 transitions. [2020-10-28 17:30:52,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 17:30:52,183 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 130 transitions. [2020-10-28 17:30:52,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-28 17:30:52,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:52,184 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 11, 11, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:30:52,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 17:30:52,184 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:52,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:52,185 INFO L82 PathProgramCache]: Analyzing trace with hash 344127288, now seen corresponding path program 27 times [2020-10-28 17:30:52,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:52,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412166399] [2020-10-28 17:30:52,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:52,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:52,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:52,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:52,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:57,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:57,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 17:30:57,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:30:57,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 17:30:57,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:57,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:57,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:30:57,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:30:57,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 17:30:57,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:57,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:57,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:57,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:57,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:57,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:57,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:30:57,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:57,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:57,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:57,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:57,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:57,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:57,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 17:30:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:57,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:57,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:57,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:57,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:30:57,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:57,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-28 17:30:57,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:57,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:57,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:57,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 17:30:57,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:57,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:57,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-28 17:30:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:57,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:57,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:57,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:57,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:30:57,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:57,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-28 17:30:57,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:57,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:57,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:57,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 17:30:57,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:57,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:57,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-28 17:30:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:57,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:57,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:57,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:57,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:30:57,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:57,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-28 17:30:57,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:57,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:57,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:57,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 17:30:57,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:57,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:58,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3266 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 3145 trivial. 0 not checked. [2020-10-28 17:30:58,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412166399] [2020-10-28 17:30:58,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:58,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:30:58,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770399618] [2020-10-28 17:30:58,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:30:58,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:58,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:30:58,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:30:58,024 INFO L87 Difference]: Start difference. First operand 113 states and 130 transitions. Second operand 15 states. [2020-10-28 17:30:58,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:58,256 INFO L93 Difference]: Finished difference Result 200 states and 234 transitions. [2020-10-28 17:30:58,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:30:58,257 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 226 [2020-10-28 17:30:58,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:58,258 INFO L225 Difference]: With dead ends: 200 [2020-10-28 17:30:58,258 INFO L226 Difference]: Without dead ends: 116 [2020-10-28 17:30:58,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:30:58,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-28 17:30:58,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-10-28 17:30:58,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-28 17:30:58,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 132 transitions. [2020-10-28 17:30:58,267 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 132 transitions. Word has length 226 [2020-10-28 17:30:58,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:58,267 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 132 transitions. [2020-10-28 17:30:58,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:30:58,267 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 132 transitions. [2020-10-28 17:30:58,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-28 17:30:58,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:58,269 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 12, 12, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:30:58,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 17:30:58,269 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:58,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:58,270 INFO L82 PathProgramCache]: Analyzing trace with hash -907554950, now seen corresponding path program 28 times [2020-10-28 17:30:58,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:58,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365606239] [2020-10-28 17:30:58,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:58,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:58,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:58,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:58,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:58,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:03,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:03,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-28 17:31:03,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:31:03,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 17:31:03,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:03,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:03,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:31:03,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:31:03,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 17:31:03,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:03,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:03,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:03,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:03,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:03,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:03,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:31:03,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:03,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:03,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:03,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:03,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:03,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:03,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 17:31:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:03,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:03,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:03,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:03,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:31:03,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:03,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-28 17:31:03,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:03,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:03,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:03,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 17:31:03,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:03,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:03,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 17:31:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:03,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:03,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:03,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:03,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:31:03,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:03,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-28 17:31:03,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:03,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:03,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:03,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 17:31:03,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:03,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:04,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-28 17:31:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:04,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:04,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:04,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:04,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:31:04,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:04,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-28 17:31:04,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:04,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:04,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:04,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 17:31:04,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:04,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:04,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3289 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 3145 trivial. 0 not checked. [2020-10-28 17:31:04,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365606239] [2020-10-28 17:31:04,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:04,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 17:31:04,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349092193] [2020-10-28 17:31:04,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 17:31:04,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:04,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 17:31:04,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:31:04,295 INFO L87 Difference]: Start difference. First operand 115 states and 132 transitions. Second operand 16 states. [2020-10-28 17:31:04,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:04,454 INFO L93 Difference]: Finished difference Result 202 states and 236 transitions. [2020-10-28 17:31:04,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:31:04,454 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 228 [2020-10-28 17:31:04,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:04,456 INFO L225 Difference]: With dead ends: 202 [2020-10-28 17:31:04,456 INFO L226 Difference]: Without dead ends: 118 [2020-10-28 17:31:04,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:31:04,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-28 17:31:04,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2020-10-28 17:31:04,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-28 17:31:04,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 134 transitions. [2020-10-28 17:31:04,463 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 134 transitions. Word has length 228 [2020-10-28 17:31:04,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:04,464 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 134 transitions. [2020-10-28 17:31:04,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 17:31:04,464 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 134 transitions. [2020-10-28 17:31:04,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-28 17:31:04,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:04,465 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 13, 13, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:31:04,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 17:31:04,466 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:04,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:04,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1183342788, now seen corresponding path program 29 times [2020-10-28 17:31:04,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:04,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578262406] [2020-10-28 17:31:04,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:04,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:04,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:04,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:04,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:09,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:09,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 17:31:09,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:31:09,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 17:31:09,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:09,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:09,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:31:09,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-28 17:31:09,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:31:09,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:09,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:09,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:09,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:09,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:09,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:09,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:31:09,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:09,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:09,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:09,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:09,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:09,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:09,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 17:31:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:09,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:09,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:09,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:09,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:31:09,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:09,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-28 17:31:09,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:09,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:09,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:09,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:09,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:09,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:09,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 17:31:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:09,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:09,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:10,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:10,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:31:10,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:10,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-28 17:31:10,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:10,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:10,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:10,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:10,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:10,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:10,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-28 17:31:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:10,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:10,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:10,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:10,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:31:10,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:10,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-28 17:31:10,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:10,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:10,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:10,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 17:31:10,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:10,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:10,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3314 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 3265 trivial. 0 not checked. [2020-10-28 17:31:10,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578262406] [2020-10-28 17:31:10,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:10,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:31:10,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67938598] [2020-10-28 17:31:10,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:31:10,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:10,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:31:10,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:31:10,400 INFO L87 Difference]: Start difference. First operand 117 states and 134 transitions. Second operand 11 states. [2020-10-28 17:31:10,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:10,550 INFO L93 Difference]: Finished difference Result 185 states and 216 transitions. [2020-10-28 17:31:10,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:31:10,551 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 230 [2020-10-28 17:31:10,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:10,553 INFO L225 Difference]: With dead ends: 185 [2020-10-28 17:31:10,553 INFO L226 Difference]: Without dead ends: 120 [2020-10-28 17:31:10,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:31:10,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-28 17:31:10,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2020-10-28 17:31:10,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-28 17:31:10,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 136 transitions. [2020-10-28 17:31:10,561 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 136 transitions. Word has length 230 [2020-10-28 17:31:10,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:10,561 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 136 transitions. [2020-10-28 17:31:10,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:31:10,562 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 136 transitions. [2020-10-28 17:31:10,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-28 17:31:10,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:10,563 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 13, 13, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:31:10,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 17:31:10,563 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:10,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:10,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1755280794, now seen corresponding path program 30 times [2020-10-28 17:31:10,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:10,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418172823] [2020-10-28 17:31:10,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:10,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:10,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:10,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:10,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:15,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:15,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-28 17:31:15,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:31:15,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-28 17:31:15,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:15,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:15,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:31:15,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 17:31:15,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 17:31:15,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:15,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:15,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:15,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:15,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:15,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:15,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:31:15,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:15,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:15,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:15,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:15,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:15,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:15,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 17:31:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:15,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:15,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:15,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:31:15,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:15,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-28 17:31:15,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:15,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:15,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:31:15,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:31:15,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 17:31:15,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:16,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 17:31:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:16,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:16,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:16,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:16,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:31:16,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:16,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-28 17:31:16,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:16,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 17:31:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:16,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:16,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-28 17:31:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:16,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:16,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:16,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:16,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 17:31:16,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:16,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-28 17:31:16,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:16,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:16,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:16,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 17:31:16,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:16,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3329 backedges. 0 proven. 1737 refuted. 0 times theorem prover too weak. 1592 trivial. 0 not checked. [2020-10-28 17:31:16,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418172823] [2020-10-28 17:31:16,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:16,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 17:31:16,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062828020] [2020-10-28 17:31:16,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 17:31:16,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:16,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 17:31:16,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:31:16,534 INFO L87 Difference]: Start difference. First operand 119 states and 136 transitions. Second operand 17 states. [2020-10-28 17:31:17,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:17,369 INFO L93 Difference]: Finished difference Result 211 states and 249 transitions. [2020-10-28 17:31:17,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 17:31:17,370 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 232 [2020-10-28 17:31:17,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:17,372 INFO L225 Difference]: With dead ends: 211 [2020-10-28 17:31:17,372 INFO L226 Difference]: Without dead ends: 126 [2020-10-28 17:31:17,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-28 17:31:17,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-28 17:31:17,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2020-10-28 17:31:17,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-28 17:31:17,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2020-10-28 17:31:17,380 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 232 [2020-10-28 17:31:17,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:17,381 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2020-10-28 17:31:17,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 17:31:17,381 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2020-10-28 17:31:17,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-28 17:31:17,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:17,382 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 13, 13, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:31:17,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 17:31:17,383 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:17,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:17,383 INFO L82 PathProgramCache]: Analyzing trace with hash -205669195, now seen corresponding path program 31 times [2020-10-28 17:31:17,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:17,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046389216] [2020-10-28 17:31:17,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:17,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:17,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:17,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:17,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:17,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:22,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:22,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-28 17:31:22,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:31:22,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 17:31:22,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:22,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:22,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:31:22,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 17:31:22,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 17:31:22,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:22,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:22,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:22,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:22,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:22,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:22,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:31:22,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:22,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:22,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:22,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:22,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:22,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:22,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 17:31:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:22,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:22,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:23,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:23,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 17:31:23,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:23,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 895 [2020-10-28 17:31:23,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:23,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:23,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:31:23,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:23,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 17:31:23,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:23,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 17:31:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:23,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:23,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:24,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:24,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 17:31:24,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:24,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1105 [2020-10-28 17:31:24,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:24,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:24,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:31:24,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:31:24,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-28 17:31:24,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:25,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-28 17:31:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:25,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:25,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:25,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:25,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 17:31:25,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:25,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-28 17:31:25,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:25,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-28 17:31:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:25,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:25,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3818 backedges. 1 proven. 1949 refuted. 0 times theorem prover too weak. 1868 trivial. 0 not checked. [2020-10-28 17:31:25,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046389216] [2020-10-28 17:31:25,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:25,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 17:31:25,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918416408] [2020-10-28 17:31:25,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 17:31:25,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:25,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 17:31:25,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:31:25,575 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand 16 states. [2020-10-28 17:31:26,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:26,503 INFO L93 Difference]: Finished difference Result 278 states and 329 transitions. [2020-10-28 17:31:26,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:31:26,503 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 244 [2020-10-28 17:31:26,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:26,508 INFO L225 Difference]: With dead ends: 278 [2020-10-28 17:31:26,508 INFO L226 Difference]: Without dead ends: 191 [2020-10-28 17:31:26,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:31:26,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-28 17:31:26,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 183. [2020-10-28 17:31:26,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-28 17:31:26,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 218 transitions. [2020-10-28 17:31:26,533 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 218 transitions. Word has length 244 [2020-10-28 17:31:26,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:26,534 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 218 transitions. [2020-10-28 17:31:26,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 17:31:26,534 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 218 transitions. [2020-10-28 17:31:26,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-28 17:31:26,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:26,536 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 13, 13, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:31:26,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 17:31:26,537 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:26,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:26,537 INFO L82 PathProgramCache]: Analyzing trace with hash -361649737, now seen corresponding path program 1 times [2020-10-28 17:31:26,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:26,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648017297] [2020-10-28 17:31:26,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:26,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:26,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:26,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:26,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:28,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:29,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:31,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:31,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-28 17:31:31,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:31:31,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-28 17:31:31,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:31,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:31,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 17:31:31,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-28 17:31:31,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 17:31:31,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:31,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:31,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:31,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:31,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:31,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:31,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:31:31,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:31,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:31,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:31,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:31,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:31,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:31,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 17:31:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:31,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:31,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:32,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:32,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 17:31:32,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:32,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-10-28 17:31:32,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:32,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:32,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:32,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:32,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:32,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:32,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 17:31:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:32,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:32,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:32,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 17:31:32,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:32,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-10-28 17:31:32,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:32,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:32,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 17:31:32,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:31:32,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 17:31:32,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:32,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-28 17:31:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:32,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:32,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:33,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:33,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 17:31:33,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:33,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-10-28 17:31:33,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:33,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:33,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:33,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-28 17:31:33,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:33,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:33,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3818 backedges. 816 proven. 1194 refuted. 0 times theorem prover too weak. 1808 trivial. 0 not checked. [2020-10-28 17:31:33,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648017297] [2020-10-28 17:31:33,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:33,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 17:31:33,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847972112] [2020-10-28 17:31:33,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 17:31:33,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:33,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 17:31:33,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:31:33,344 INFO L87 Difference]: Start difference. First operand 183 states and 218 transitions. Second operand 18 states. [2020-10-28 17:31:34,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:34,202 INFO L93 Difference]: Finished difference Result 346 states and 426 transitions. [2020-10-28 17:31:34,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:31:34,203 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 244 [2020-10-28 17:31:34,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:34,206 INFO L225 Difference]: With dead ends: 346 [2020-10-28 17:31:34,206 INFO L226 Difference]: Without dead ends: 197 [2020-10-28 17:31:34,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 17:31:34,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-28 17:31:34,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 191. [2020-10-28 17:31:34,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-28 17:31:34,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 228 transitions. [2020-10-28 17:31:34,251 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 228 transitions. Word has length 244 [2020-10-28 17:31:34,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:34,251 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 228 transitions. [2020-10-28 17:31:34,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 17:31:34,252 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 228 transitions. [2020-10-28 17:31:34,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-28 17:31:34,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:34,254 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 13, 13, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:31:34,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 17:31:34,254 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:34,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:34,256 INFO L82 PathProgramCache]: Analyzing trace with hash 239861330, now seen corresponding path program 2 times [2020-10-28 17:31:34,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:34,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437092498] [2020-10-28 17:31:34,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:34,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:34,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:34,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:34,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:39,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:39,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-28 17:31:39,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:31:39,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-28 17:31:39,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:39,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:39,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:31:39,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:31:39,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:31:39,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:39,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:39,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:39,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:39,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:39,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:39,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:31:39,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:39,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:39,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:39,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:39,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:39,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:39,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 17:31:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:39,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:39,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:39,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:39,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 17:31:39,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:39,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-28 17:31:39,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:39,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:39,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:39,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 17:31:39,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:39,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:39,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-28 17:31:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:39,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:39,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:40,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:40,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 17:31:40,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:40,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-28 17:31:40,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:40,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:40,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:40,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 17:31:40,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:40,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:40,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-28 17:31:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:40,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:40,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:40,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:40,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 17:31:40,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:40,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-28 17:31:40,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:40,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:40,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:40,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 17:31:40,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:40,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:40,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4343 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 4174 trivial. 0 not checked. [2020-10-28 17:31:40,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437092498] [2020-10-28 17:31:40,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:40,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 17:31:40,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616039156] [2020-10-28 17:31:40,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 17:31:40,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:40,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 17:31:40,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:31:40,335 INFO L87 Difference]: Start difference. First operand 191 states and 228 transitions. Second operand 17 states. [2020-10-28 17:31:40,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:40,555 INFO L93 Difference]: Finished difference Result 352 states and 426 transitions. [2020-10-28 17:31:40,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 17:31:40,555 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 256 [2020-10-28 17:31:40,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:40,557 INFO L225 Difference]: With dead ends: 352 [2020-10-28 17:31:40,557 INFO L226 Difference]: Without dead ends: 194 [2020-10-28 17:31:40,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:31:40,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-28 17:31:40,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 193. [2020-10-28 17:31:40,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-28 17:31:40,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 230 transitions. [2020-10-28 17:31:40,576 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 230 transitions. Word has length 256 [2020-10-28 17:31:40,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:40,576 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 230 transitions. [2020-10-28 17:31:40,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 17:31:40,576 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 230 transitions. [2020-10-28 17:31:40,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-28 17:31:40,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:40,579 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 14, 14, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:31:40,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 17:31:40,579 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:40,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:40,579 INFO L82 PathProgramCache]: Analyzing trace with hash 162166548, now seen corresponding path program 3 times [2020-10-28 17:31:40,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:40,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772135224] [2020-10-28 17:31:40,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:40,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:40,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:40,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:40,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:42,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:43,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:43,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking...