/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=DEEPEST --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/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:46:49,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:46:49,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:46:49,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:46:49,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:46:49,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:46:49,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:46:49,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:46:49,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:46:49,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:46:49,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:46:49,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:46:49,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:46:49,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:46:49,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:46:49,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:46:49,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:46:49,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:46:49,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:46:49,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:46:49,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:46:49,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:46:49,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:46:49,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:46:49,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:46:49,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:46:49,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:46:49,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:46:49,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:46:49,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:46:49,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:46:49,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:46:49,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:46:49,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:46:49,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:46:49,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:46:49,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:46:49,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:46:49,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:46:49,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:46:49,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:46:49,136 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 [2020-10-27 22:46:49,165 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:46:49,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:46:49,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:46:49,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:46:49,168 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:46:49,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:46:49,168 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:46:49,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:46:49,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:46:49,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:46:49,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:46:49,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:46:49,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:46:49,170 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:46:49,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:46:49,170 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:46:49,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:46:49,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:46:49,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:46:49,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:46:49,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:46:49,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:46:49,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:46:49,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:46:49,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:46:49,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:46:49,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:46:49,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:46:49,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:46:49,173 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:46:49,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:46:49,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:46:49,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:46:49,606 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:46:49,607 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:46:49,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c [2020-10-27 22:46:49,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5adf0e1d/43a77daf231344ed8789385d91df456e/FLAGf45f09c91 [2020-10-27 22:46:50,531 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:46:50,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c [2020-10-27 22:46:50,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5adf0e1d/43a77daf231344ed8789385d91df456e/FLAGf45f09c91 [2020-10-27 22:46:50,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5adf0e1d/43a77daf231344ed8789385d91df456e [2020-10-27 22:46:50,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:46:50,820 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:46:50,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:46:50,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:46:50,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:46:50,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:46:50" (1/1) ... [2020-10-27 22:46:50,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c75636b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:50, skipping insertion in model container [2020-10-27 22:46:50,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:46:50" (1/1) ... [2020-10-27 22:46:50,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:46:50,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:46:51,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:46:51,206 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:46:51,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:46:51,360 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:46:51,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:51 WrapperNode [2020-10-27 22:46:51,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:46:51,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:46:51,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:46:51,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:46:51,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:51" (1/1) ... [2020-10-27 22:46:51,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:51" (1/1) ... [2020-10-27 22:46:51,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:51" (1/1) ... [2020-10-27 22:46:51,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:51" (1/1) ... [2020-10-27 22:46:51,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:51" (1/1) ... [2020-10-27 22:46:51,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:51" (1/1) ... [2020-10-27 22:46:51,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:51" (1/1) ... [2020-10-27 22:46:51,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:46:51,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:46:51,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:46:51,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:46:51,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:51" (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 [2020-10-27 22:46:51,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:46:51,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:46:51,526 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:46:51,526 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 22:46:51,526 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 22:46:51,527 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 22:46:51,527 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 22:46:51,527 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 22:46:51,527 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:46:51,527 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 22:46:51,527 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:46:51,528 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:46:51,528 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:46:51,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:46:51,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 22:46:51,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 22:46:51,528 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 22:46:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 22:46:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 22:46:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 22:46:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 22:46:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 22:46:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 22:46:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 22:46:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:46:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:46:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:46:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:46:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:46:51,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:46:51,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:46:52,596 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:46:52,596 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 22:46:52,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:46:52 BoogieIcfgContainer [2020-10-27 22:46:52,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:46:52,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:46:52,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:46:52,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:46:52,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:46:50" (1/3) ... [2020-10-27 22:46:52,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40206b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:46:52, skipping insertion in model container [2020-10-27 22:46:52,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:51" (2/3) ... [2020-10-27 22:46:52,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40206b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:46:52, skipping insertion in model container [2020-10-27 22:46:52,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:46:52" (3/3) ... [2020-10-27 22:46:52,612 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c [2020-10-27 22:46:52,627 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:46:52,633 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:46:52,650 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:46:52,693 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:46:52,693 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:46:52,693 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:46:52,693 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:46:52,693 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:46:52,694 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:46:52,694 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:46:52,694 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:46:52,728 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states. [2020-10-27 22:46:52,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 22:46:52,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:52,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:46:52,754 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:52,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:52,763 INFO L82 PathProgramCache]: Analyzing trace with hash 916145648, now seen corresponding path program 1 times [2020-10-27 22:46:52,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:52,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949951860] [2020-10-27 22:46:52,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:53,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:53,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:53,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 22:46:53,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:53,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-27 22:46:53,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:53,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:53,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 22:46:53,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:53,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:46:53,876 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:46:53,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:53,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:53,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:53,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:53,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:53,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 22:46:53,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:53,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:53,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:53,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:53,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:53,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:46:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:53,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:53,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:53,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:46:53,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:53,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 22:46:53,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:53,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:53,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:53,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:53,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:54,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:46:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:54,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:54,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:54,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:54,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:54,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:46:54,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:54,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:54,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:54,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:54,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:46:54,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:46:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:54,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:54,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:54,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:54,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:54,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:46:54,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:54,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:54,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:54,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:54,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:46:54,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 22:46:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:54,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:54,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:54,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:54,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:54,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 22:46:54,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:54,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:54,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 22:46:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:54,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:54,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:54,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:54,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:54,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:46:54,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:54,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:54,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:54,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:54,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:54,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:46:54,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949951860] [2020-10-27 22:46:54,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:46:54,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 22:46:54,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643872489] [2020-10-27 22:46:54,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 22:46:54,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:54,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 22:46:54,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:46:54,301 INFO L87 Difference]: Start difference. First operand 159 states. Second operand 6 states. [2020-10-27 22:46:55,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:55,564 INFO L93 Difference]: Finished difference Result 263 states and 417 transitions. [2020-10-27 22:46:55,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 22:46:55,566 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-27 22:46:55,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:55,579 INFO L225 Difference]: With dead ends: 263 [2020-10-27 22:46:55,579 INFO L226 Difference]: Without dead ends: 163 [2020-10-27 22:46:55,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:46:55,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-27 22:46:55,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 151. [2020-10-27 22:46:55,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-27 22:46:55,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 244 transitions. [2020-10-27 22:46:55,699 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 244 transitions. Word has length 59 [2020-10-27 22:46:55,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:55,700 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 244 transitions. [2020-10-27 22:46:55,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 22:46:55,700 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 244 transitions. [2020-10-27 22:46:55,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 22:46:55,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:55,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:46:55,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:46:55,705 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:55,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:55,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1327837650, now seen corresponding path program 1 times [2020-10-27 22:46:55,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:55,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062732383] [2020-10-27 22:46:55,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:55,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:56,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:56,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 22:46:56,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:56,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 660 [2020-10-27 22:46:56,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:56,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:46:56,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 22:46:56,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:46:56,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:56,786 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:46:56,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:56,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:56,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:56,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:56,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:56,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:46:56,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:56,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:56,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:56,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:56,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:56,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:46:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:56,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:56,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:56,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:46:56,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:56,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 22:46:56,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:56,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:56,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:56,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:46:56,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:56,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:46:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:57,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:57,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:57,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:57,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:57,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:46:57,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:57,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:57,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:57,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:57,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:57,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:46:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:57,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:57,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:57,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:57,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:57,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:46:57,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:57,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:57,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:57,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:57,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:57,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 22:46:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:57,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:57,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:57,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:57,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:57,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:46:57,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:57,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:57,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:57,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:57,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:57,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 22:46:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:57,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:57,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:57,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:57,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:57,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:46:57,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:57,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:57,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:57,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:57,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:46:57,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:46:57,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062732383] [2020-10-27 22:46:57,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:46:57,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:46:57,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078273627] [2020-10-27 22:46:57,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:46:57,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:57,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:46:57,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:46:57,202 INFO L87 Difference]: Start difference. First operand 151 states and 244 transitions. Second operand 10 states. [2020-10-27 22:46:57,771 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:46:58,040 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:46:59,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:59,568 INFO L93 Difference]: Finished difference Result 264 states and 416 transitions. [2020-10-27 22:46:59,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 22:46:59,568 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-27 22:46:59,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:59,574 INFO L225 Difference]: With dead ends: 264 [2020-10-27 22:46:59,575 INFO L226 Difference]: Without dead ends: 172 [2020-10-27 22:46:59,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-27 22:46:59,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-27 22:46:59,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 151. [2020-10-27 22:46:59,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-27 22:46:59,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 217 transitions. [2020-10-27 22:46:59,608 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 217 transitions. Word has length 59 [2020-10-27 22:46:59,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:59,608 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 217 transitions. [2020-10-27 22:46:59,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:46:59,609 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 217 transitions. [2020-10-27 22:46:59,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 22:46:59,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:59,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:46:59,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:46:59,613 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:59,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:59,613 INFO L82 PathProgramCache]: Analyzing trace with hash 242313367, now seen corresponding path program 1 times [2020-10-27 22:46:59,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:59,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501717708] [2020-10-27 22:46:59,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:59,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:59,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:59,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:01,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:04,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:04,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 22:47:04,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:47:04,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 22:47:04,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:04,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:47:04,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 22:47:04,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 22:47:04,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:47:04,948 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:47:04,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:04,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:04,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:04,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:04,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:04,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:47:04,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:04,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:04,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:04,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:04,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:47:04,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:47:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:04,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:05,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:05,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:47:05,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:05,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 22:47:05,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:05,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:05,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:05,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 22:47:05,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:47:05,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:47:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:05,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:05,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:05,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:05,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:05,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:47:05,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:05,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:05,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:05,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:47:05,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:47:05,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:47:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:05,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:05,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:05,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:05,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:05,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 22:47:05,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:05,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:05,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:05,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:47:05,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:05,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:47:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:05,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:05,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:05,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:05,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:05,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 22:47:05,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:05,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:05,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:05,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:47:05,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:05,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:47:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:05,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:05,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:05,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:05,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:05,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:47:05,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:05,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:05,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:47:05,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:47:05,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:05,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:47:05,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501717708] [2020-10-27 22:47:05,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:47:05,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 22:47:05,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589344791] [2020-10-27 22:47:05,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:47:05,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:05,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:47:05,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:47:05,428 INFO L87 Difference]: Start difference. First operand 151 states and 217 transitions. Second operand 13 states. [2020-10-27 22:47:05,672 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:47:06,166 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:47:06,402 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:08,326 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:08,570 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:47:08,806 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:47:12,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:12,409 INFO L93 Difference]: Finished difference Result 828 states and 1261 transitions. [2020-10-27 22:47:12,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 22:47:12,409 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 85 [2020-10-27 22:47:12,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:12,422 INFO L225 Difference]: With dead ends: 828 [2020-10-27 22:47:12,422 INFO L226 Difference]: Without dead ends: 742 [2020-10-27 22:47:12,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=567, Invalid=1883, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 22:47:12,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2020-10-27 22:47:12,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 640. [2020-10-27 22:47:12,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2020-10-27 22:47:12,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 978 transitions. [2020-10-27 22:47:12,560 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 978 transitions. Word has length 85 [2020-10-27 22:47:12,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:12,563 INFO L481 AbstractCegarLoop]: Abstraction has 640 states and 978 transitions. [2020-10-27 22:47:12,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:47:12,563 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 978 transitions. [2020-10-27 22:47:12,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 22:47:12,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:12,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:47:12,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:47:12,579 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:12,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:12,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1141940013, now seen corresponding path program 1 times [2020-10-27 22:47:12,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:12,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111670430] [2020-10-27 22:47:12,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:12,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:12,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:12,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:13,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:14,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:17,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:17,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 22:47:17,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:47:17,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 22:47:17,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:17,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:47:17,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 22:47:17,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 22:47:17,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:47:17,906 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:47:17,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:17,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:17,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:17,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:17,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:17,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:47:17,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:17,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:17,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:17,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:17,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:47:17,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:47:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:17,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:18,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:18,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:47:18,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:18,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 22:47:18,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 22:47:18,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:47:18,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:47:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:18,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:18,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:18,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:18,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:18,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:47:18,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:18,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:18,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:18,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:47:18,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:47:18,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:47:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:18,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:18,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:18,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:18,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:18,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:47:18,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:18,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:47:18,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:18,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:47:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:18,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:18,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:18,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:18,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:18,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:47:18,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:47:18,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:18,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:47:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:18,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:18,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:18,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:47:18,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:18,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:47:18,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:18,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:47:18,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:47:18,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:47:18,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:18,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:47:18,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111670430] [2020-10-27 22:47:18,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:47:18,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 22:47:18,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259004031] [2020-10-27 22:47:18,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 22:47:18,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:18,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 22:47:18,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-10-27 22:47:18,362 INFO L87 Difference]: Start difference. First operand 640 states and 978 transitions. Second operand 14 states. [2020-10-27 22:47:18,679 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 22:47:19,251 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:47:19,493 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:19,745 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:47:21,949 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:47:22,205 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:22,483 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 22:47:22,740 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:47:24,006 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-10-27 22:47:25,081 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-10-27 22:47:26,456 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:47:26,791 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:30,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:30,100 INFO L93 Difference]: Finished difference Result 3141 states and 4961 transitions. [2020-10-27 22:47:30,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-27 22:47:30,100 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 86 [2020-10-27 22:47:30,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:30,119 INFO L225 Difference]: With dead ends: 3141 [2020-10-27 22:47:30,119 INFO L226 Difference]: Without dead ends: 2566 [2020-10-27 22:47:30,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1586 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=946, Invalid=3884, Unknown=0, NotChecked=0, Total=4830 [2020-10-27 22:47:30,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2020-10-27 22:47:30,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 1770. [2020-10-27 22:47:30,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1770 states. [2020-10-27 22:47:30,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2773 transitions. [2020-10-27 22:47:30,339 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2773 transitions. Word has length 86 [2020-10-27 22:47:30,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:30,339 INFO L481 AbstractCegarLoop]: Abstraction has 1770 states and 2773 transitions. [2020-10-27 22:47:30,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 22:47:30,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2773 transitions. [2020-10-27 22:47:30,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 22:47:30,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:30,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:47:30,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:47:30,343 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:30,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:30,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1588612416, now seen corresponding path program 1 times [2020-10-27 22:47:30,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:30,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513375873] [2020-10-27 22:47:30,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:30,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:30,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:30,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:31,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:31,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:35,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:35,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 22:47:35,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:47:35,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 22:47:35,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:35,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:47:35,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 22:47:35,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 22:47:35,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:35,691 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:47:35,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:35,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:35,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:35,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:35,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:35,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:47:35,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:35,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:35,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:35,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:47:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:35,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:35,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:35,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:47:35,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:35,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 22:47:35,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:35,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:47:35,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:35,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 22:47:35,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:35,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:47:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:35,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:35,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:35,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:35,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:35,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:47:35,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:35,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:35,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:35,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:47:35,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:35,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:47:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:35,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:35,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:35,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:35,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:35,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:47:35,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:35,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:35,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:35,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:47:35,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:35,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:47:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:35,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:35,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:35,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:35,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:35,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:47:35,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:35,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:35,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:35,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:47:35,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:35,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:47:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:35,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:35,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:35,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:47:35,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:35,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:47:35,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:35,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:35,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 22:47:35,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:47:35,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:36,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:47:36,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513375873] [2020-10-27 22:47:36,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:47:36,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:47:36,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156759494] [2020-10-27 22:47:36,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:47:36,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:36,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:47:36,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:47:36,014 INFO L87 Difference]: Start difference. First operand 1770 states and 2773 transitions. Second operand 10 states. [2020-10-27 22:47:36,281 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:36,864 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:38,451 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:38,706 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:47:40,450 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-27 22:47:41,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:41,779 INFO L93 Difference]: Finished difference Result 7093 states and 11136 transitions. [2020-10-27 22:47:41,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 22:47:41,780 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-10-27 22:47:41,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:41,820 INFO L225 Difference]: With dead ends: 7093 [2020-10-27 22:47:41,821 INFO L226 Difference]: Without dead ends: 5411 [2020-10-27 22:47:41,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2020-10-27 22:47:41,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5411 states. [2020-10-27 22:47:42,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5411 to 4677. [2020-10-27 22:47:42,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4677 states. [2020-10-27 22:47:42,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4677 states to 4677 states and 7323 transitions. [2020-10-27 22:47:42,271 INFO L78 Accepts]: Start accepts. Automaton has 4677 states and 7323 transitions. Word has length 87 [2020-10-27 22:47:42,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:42,272 INFO L481 AbstractCegarLoop]: Abstraction has 4677 states and 7323 transitions. [2020-10-27 22:47:42,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:47:42,272 INFO L276 IsEmpty]: Start isEmpty. Operand 4677 states and 7323 transitions. [2020-10-27 22:47:42,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 22:47:42,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:42,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:47:42,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:47:42,276 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:42,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:42,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1291162718, now seen corresponding path program 1 times [2020-10-27 22:47:42,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:42,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044562354] [2020-10-27 22:47:42,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:42,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:42,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:42,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:42,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:42,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:42,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:42,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:47,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:47,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 22:47:47,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:47:47,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 22:47:47,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:47,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:47,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 22:47:47,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:47:47,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:47,572 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:47:47,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:47,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:47,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:47,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:47,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:47,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:47:47,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:47,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:47,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:47,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:47,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:47,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:47:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:47,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:47,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:47,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:47:47,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:47,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 22:47:47,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:47,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:47,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:47,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 22:47:47,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:47,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:47:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:47,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:47,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:47,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:47:47,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:47,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 22:47:47,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:47,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:47,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:47,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:47:47,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:47,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 22:47:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:47,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:47,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:47,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:47,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:47,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:47:47,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:47,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:47,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:47,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:47,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:47,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 22:47:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:47,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:47,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:47,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:47,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:47,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:47:47,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:47,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:47,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:47,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 22:47:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:47,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:47,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:47,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:47,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:47,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:47:47,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:47,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:47,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:47,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:47,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:47,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:47:47,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044562354] [2020-10-27 22:47:47,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:47:47,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 22:47:47,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089667012] [2020-10-27 22:47:47,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:47:47,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:47,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:47:47,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:47:47,850 INFO L87 Difference]: Start difference. First operand 4677 states and 7323 transitions. Second operand 8 states. [2020-10-27 22:47:48,126 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:47:50,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:50,892 INFO L93 Difference]: Finished difference Result 13721 states and 21466 transitions. [2020-10-27 22:47:50,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:47:50,892 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-10-27 22:47:50,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:50,951 INFO L225 Difference]: With dead ends: 13721 [2020-10-27 22:47:50,951 INFO L226 Difference]: Without dead ends: 9120 [2020-10-27 22:47:50,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:47:50,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9120 states. [2020-10-27 22:47:51,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9120 to 8001. [2020-10-27 22:47:51,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8001 states. [2020-10-27 22:47:51,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8001 states to 8001 states and 12374 transitions. [2020-10-27 22:47:51,674 INFO L78 Accepts]: Start accepts. Automaton has 8001 states and 12374 transitions. Word has length 88 [2020-10-27 22:47:51,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:51,675 INFO L481 AbstractCegarLoop]: Abstraction has 8001 states and 12374 transitions. [2020-10-27 22:47:51,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:47:51,675 INFO L276 IsEmpty]: Start isEmpty. Operand 8001 states and 12374 transitions. [2020-10-27 22:47:51,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 22:47:51,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:51,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:47:51,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:47:51,678 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:51,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:51,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1265841252, now seen corresponding path program 1 times [2020-10-27 22:47:51,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:51,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677750805] [2020-10-27 22:47:51,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:51,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:51,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:51,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:52,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:52,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:56,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:56,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 22:47:56,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:47:56,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 22:47:56,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:56,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:47:56,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 22:47:56,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 22:47:56,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:56,965 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:47:56,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:56,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:56,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:56,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:56,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:56,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:47:56,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:56,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:47:56,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:47:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:57,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:57,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:57,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:47:57,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:57,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 22:47:57,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:57,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:47:57,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:57,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:47:57,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:47:57,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:47:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:57,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:57,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:57,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:57,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:57,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:47:57,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:57,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:57,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:57,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:47:57,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:57,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:47:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:57,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:57,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:57,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:57,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:57,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:47:57,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:57,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:57,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:57,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:47:57,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:57,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:47:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:57,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:57,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:57,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:57,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:57,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:47:57,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:57,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:47:57,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:57,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:47:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:57,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:57,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:57,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:47:57,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:57,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:47:57,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:57,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:57,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:47:57,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:47:57,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:57,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:47:57,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677750805] [2020-10-27 22:47:57,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:47:57,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:47:57,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111320040] [2020-10-27 22:47:57,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:47:57,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:57,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:47:57,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:47:57,376 INFO L87 Difference]: Start difference. First operand 8001 states and 12374 transitions. Second operand 10 states. [2020-10-27 22:47:57,612 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:58,165 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:47:59,334 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:59,602 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:48:02,240 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2020-10-27 22:48:02,427 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2020-10-27 22:48:02,591 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-10-27 22:48:04,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:48:04,697 INFO L93 Difference]: Finished difference Result 45499 states and 70283 transitions. [2020-10-27 22:48:04,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 22:48:04,698 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-10-27 22:48:04,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:48:04,945 INFO L225 Difference]: With dead ends: 45499 [2020-10-27 22:48:04,945 INFO L226 Difference]: Without dead ends: 37576 [2020-10-27 22:48:04,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2020-10-27 22:48:05,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37576 states. [2020-10-27 22:48:07,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37576 to 32813. [2020-10-27 22:48:07,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32813 states. [2020-10-27 22:48:07,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32813 states to 32813 states and 50578 transitions. [2020-10-27 22:48:07,836 INFO L78 Accepts]: Start accepts. Automaton has 32813 states and 50578 transitions. Word has length 88 [2020-10-27 22:48:07,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:48:07,837 INFO L481 AbstractCegarLoop]: Abstraction has 32813 states and 50578 transitions. [2020-10-27 22:48:07,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:48:07,837 INFO L276 IsEmpty]: Start isEmpty. Operand 32813 states and 50578 transitions. [2020-10-27 22:48:07,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 22:48:07,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:48:07,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:48:07,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:48:07,839 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:48:07,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:48:07,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1094066356, now seen corresponding path program 1 times [2020-10-27 22:48:07,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:48:07,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337481384] [2020-10-27 22:48:07,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:48:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:07,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:07,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:07,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:08,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:08,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:08,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:12,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:12,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:12,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 22:48:12,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:48:12,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 22:48:12,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:12,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:12,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 22:48:12,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:48:12,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:13,123 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:48:13,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:48:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:13,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:13,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:13,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:48:13,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:13,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:48:13,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:13,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:13,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:13,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:13,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:48:13,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:48:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:13,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:13,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:13,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:48:13,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:13,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 22:48:13,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:13,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:13,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:13,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 22:48:13,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:48:13,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:48:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:13,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:13,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:13,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:13,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:13,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:48:13,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:13,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:13,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:13,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:48:13,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:48:13,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:48:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:13,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:13,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:13,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:13,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:13,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:48:13,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:13,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:13,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:48:13,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:48:13,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:48:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:13,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:13,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:13,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:48:13,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:13,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 22:48:13,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:13,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:13,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:13,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:48:13,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:48:13,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 22:48:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:13,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:13,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:13,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:13,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:13,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:48:13,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:13,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:13,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:48:13,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:13,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:48:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:48:13,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337481384] [2020-10-27 22:48:13,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:48:13,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 22:48:13,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257759063] [2020-10-27 22:48:13,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:48:13,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:48:13,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:48:13,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:48:13,463 INFO L87 Difference]: Start difference. First operand 32813 states and 50578 transitions. Second operand 8 states. [2020-10-27 22:48:13,773 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:48:18,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:48:18,885 INFO L93 Difference]: Finished difference Result 97245 states and 149940 transitions. [2020-10-27 22:48:18,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:48:18,885 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-10-27 22:48:18,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:48:19,197 INFO L225 Difference]: With dead ends: 97245 [2020-10-27 22:48:19,198 INFO L226 Difference]: Without dead ends: 64510 [2020-10-27 22:48:19,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:48:19,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64510 states. [2020-10-27 22:48:23,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64510 to 57163. [2020-10-27 22:48:23,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57163 states. [2020-10-27 22:48:23,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57163 states to 57163 states and 86465 transitions. [2020-10-27 22:48:23,340 INFO L78 Accepts]: Start accepts. Automaton has 57163 states and 86465 transitions. Word has length 88 [2020-10-27 22:48:23,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:48:23,340 INFO L481 AbstractCegarLoop]: Abstraction has 57163 states and 86465 transitions. [2020-10-27 22:48:23,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:48:23,341 INFO L276 IsEmpty]: Start isEmpty. Operand 57163 states and 86465 transitions. [2020-10-27 22:48:23,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 22:48:23,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:48:23,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:48:23,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 22:48:23,342 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:48:23,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:48:23,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1924320073, now seen corresponding path program 1 times [2020-10-27 22:48:23,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:48:23,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528217494] [2020-10-27 22:48:23,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:48:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:23,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:23,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:23,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:23,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:23,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:24,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:27,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:28,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:28,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 22:48:28,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:48:28,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 22:48:28,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:28,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:28,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 22:48:28,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 22:48:28,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:28,613 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:48:28,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:48:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:28,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:28,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:28,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:48:28,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:28,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:48:28,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:28,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:28,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:28,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:48:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:28,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:28,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:28,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:48:28,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:28,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 22:48:28,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:28,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:28,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:28,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 22:48:28,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:28,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:48:28,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:28,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:28,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:28,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:28,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:28,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:48:28,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:28,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:28,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:28,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:48:28,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:28,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:48:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:28,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:28,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:28,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:48:28,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:28,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:48:28,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:28,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:28,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:28,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:48:28,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:28,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 22:48:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:28,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:28,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:28,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:28,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:28,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:48:28,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:28,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:28,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:48:28,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:28,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:28,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 22:48:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:28,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:28,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:28,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:28,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:28,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:48:28,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:28,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:28,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:48:28,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:28,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:48:28,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528217494] [2020-10-27 22:48:28,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:48:28,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 22:48:28,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602488476] [2020-10-27 22:48:28,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:48:28,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:48:28,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:48:28,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:48:28,871 INFO L87 Difference]: Start difference. First operand 57163 states and 86465 transitions. Second operand 8 states. [2020-10-27 22:48:29,107 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:48:36,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:48:36,848 INFO L93 Difference]: Finished difference Result 166347 states and 251426 transitions. [2020-10-27 22:48:36,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:48:36,848 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-10-27 22:48:36,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:48:37,567 INFO L225 Difference]: With dead ends: 166347 [2020-10-27 22:48:37,567 INFO L226 Difference]: Without dead ends: 109262 [2020-10-27 22:48:37,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:48:37,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109262 states. [2020-10-27 22:48:44,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109262 to 98415. [2020-10-27 22:48:44,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98415 states. [2020-10-27 22:48:45,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98415 states to 98415 states and 145074 transitions. [2020-10-27 22:48:45,307 INFO L78 Accepts]: Start accepts. Automaton has 98415 states and 145074 transitions. Word has length 88 [2020-10-27 22:48:45,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:48:45,308 INFO L481 AbstractCegarLoop]: Abstraction has 98415 states and 145074 transitions. [2020-10-27 22:48:45,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:48:45,316 INFO L276 IsEmpty]: Start isEmpty. Operand 98415 states and 145074 transitions. [2020-10-27 22:48:45,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 22:48:45,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:48:45,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:48:45,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 22:48:45,318 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:48:45,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:48:45,319 INFO L82 PathProgramCache]: Analyzing trace with hash -176075785, now seen corresponding path program 1 times [2020-10-27 22:48:45,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:48:45,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715908688] [2020-10-27 22:48:45,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:48:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:45,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:45,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:45,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:46,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:46,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:49,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:49,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 22:48:49,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:48:49,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3871 [2020-10-27 22:48:49,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:49,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:49,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 22:48:49,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 22:48:49,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:49,520 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:48:49,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:48:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:49,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:49,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:49,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:48:49,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:49,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:48:49,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:49,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:49,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:48:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:49,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:49,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:49,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:48:49,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:49,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:48:49,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:49,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:49,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:49,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:48:49,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:49,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:48:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:49,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:49,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:49,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:49,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:49,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:48:49,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:49,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:49,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:49,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:48:49,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:49,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:48:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:49,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:49,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:49,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:49,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:49,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:48:49,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:49,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:49,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:49,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:48:49,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:49,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:48:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:49,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:49,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:49,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:49,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:49,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:48:49,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:49,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:49,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:49,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:48:49,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:49,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:48:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:49,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:49,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:49,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:48:49,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:49,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:48:49,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:49,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:49,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 22:48:49,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:49,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:49,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:48:49,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715908688] [2020-10-27 22:48:49,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:48:49,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:48:49,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194564899] [2020-10-27 22:48:49,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:48:49,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:48:49,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:48:49,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:48:49,757 INFO L87 Difference]: Start difference. First operand 98415 states and 145074 transitions. Second operand 9 states. [2020-10-27 22:48:50,028 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:48:52,510 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:48:58,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:48:58,900 INFO L93 Difference]: Finished difference Result 220370 states and 325303 transitions. [2020-10-27 22:48:58,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 22:48:58,901 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-10-27 22:48:58,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:48:59,711 INFO L225 Difference]: With dead ends: 220370 [2020-10-27 22:48:59,712 INFO L226 Difference]: Without dead ends: 122033 [2020-10-27 22:48:59,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:49:00,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122033 states. [2020-10-27 22:49:07,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122033 to 107026. [2020-10-27 22:49:07,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107026 states. [2020-10-27 22:49:08,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107026 states to 107026 states and 157965 transitions. [2020-10-27 22:49:08,088 INFO L78 Accepts]: Start accepts. Automaton has 107026 states and 157965 transitions. Word has length 91 [2020-10-27 22:49:08,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:49:08,088 INFO L481 AbstractCegarLoop]: Abstraction has 107026 states and 157965 transitions. [2020-10-27 22:49:08,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:49:08,089 INFO L276 IsEmpty]: Start isEmpty. Operand 107026 states and 157965 transitions. [2020-10-27 22:49:08,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 22:49:08,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:49:08,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:49:08,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 22:49:08,090 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:49:08,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:49:08,091 INFO L82 PathProgramCache]: Analyzing trace with hash 443841640, now seen corresponding path program 1 times [2020-10-27 22:49:08,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:49:08,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364112864] [2020-10-27 22:49:08,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:49:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:08,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:08,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:08,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:08,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:08,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:09,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:13,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:13,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 22:49:13,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:49:13,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 22:49:13,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:13,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:49:13,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 22:49:13,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 22:49:13,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:13,354 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:49:13,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:49:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:13,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:13,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:13,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:49:13,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:13,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:49:13,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:13,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:13,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:13,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:13,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:13,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:49:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:13,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:13,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:13,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:49:13,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:13,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 22:49:13,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:13,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:13,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:13,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:49:13,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:13,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:49:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:13,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:13,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:13,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:13,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:13,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:49:13,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:13,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:13,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:13,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:49:13,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:13,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:49:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:13,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:13,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:13,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:13,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:13,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:49:13,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:13,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:49:13,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:49:13,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:49:13,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:13,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:49:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:13,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:13,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:13,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:49:13,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:13,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:49:13,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:13,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:13,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 22:49:13,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:13,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:13,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 22:49:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:13,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:13,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:13,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:49:13,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:13,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:49:13,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:13,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:13,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 22:49:13,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:13,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:13,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:49:13,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364112864] [2020-10-27 22:49:13,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:49:13,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:49:13,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172986048] [2020-10-27 22:49:13,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:49:13,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:49:13,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:49:13,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:49:13,564 INFO L87 Difference]: Start difference. First operand 107026 states and 157965 transitions. Second operand 9 states. [2020-10-27 22:49:13,816 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:49:15,997 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:49:23,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:49:23,474 INFO L93 Difference]: Finished difference Result 245824 states and 363561 transitions. [2020-10-27 22:49:23,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 22:49:23,475 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-10-27 22:49:23,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:49:24,066 INFO L225 Difference]: With dead ends: 245824 [2020-10-27 22:49:24,066 INFO L226 Difference]: Without dead ends: 138885 [2020-10-27 22:49:24,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:49:24,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138885 states. [2020-10-27 22:49:32,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138885 to 121581. [2020-10-27 22:49:32,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121581 states. [2020-10-27 22:49:33,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121581 states to 121581 states and 179720 transitions. [2020-10-27 22:49:33,038 INFO L78 Accepts]: Start accepts. Automaton has 121581 states and 179720 transitions. Word has length 93 [2020-10-27 22:49:33,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:49:33,039 INFO L481 AbstractCegarLoop]: Abstraction has 121581 states and 179720 transitions. [2020-10-27 22:49:33,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:49:33,039 INFO L276 IsEmpty]: Start isEmpty. Operand 121581 states and 179720 transitions. [2020-10-27 22:49:33,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 22:49:33,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:49:33,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:49:33,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 22:49:33,041 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:49:33,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:49:33,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1976309127, now seen corresponding path program 1 times [2020-10-27 22:49:33,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:49:33,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224816725] [2020-10-27 22:49:33,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:49:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:33,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:33,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:33,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:33,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:33,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:34,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:34,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:38,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:38,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 22:49:38,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:49:38,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 22:49:38,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:49:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 22:49:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 22:49:38,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:38,296 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:49:38,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:49:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:38,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:38,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:38,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:49:38,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:38,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:49:38,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:38,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:38,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:38,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:38,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:38,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:49:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:38,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:38,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:38,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:49:38,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:38,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 22:49:38,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:38,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:38,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:38,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 22:49:38,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:38,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:49:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:38,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:38,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:38,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:38,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:38,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:49:38,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:49:38,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:38,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:49:38,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:49:38,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:49:38,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:38,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:49:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:38,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:38,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:38,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:49:38,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:38,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:49:38,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 22:49:38,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:38,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 22:49:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:38,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:38,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:38,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:49:38,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:38,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:49:38,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:38,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:38,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:38,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 22:49:38,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:38,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 22:49:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:38,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:38,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:38,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:38,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:49:38,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:49:38,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:49:38,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:38,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:38,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:49:38,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:49:38,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:38,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:49:38,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224816725] [2020-10-27 22:49:38,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:49:38,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:49:38,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856048244] [2020-10-27 22:49:38,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:49:38,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:49:38,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:49:38,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:49:38,528 INFO L87 Difference]: Start difference. First operand 121581 states and 179720 transitions. Second operand 10 states. [2020-10-27 22:49:38,764 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:49:40,469 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 177 [2020-10-27 22:49:42,239 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-27 22:49:57,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:49:57,109 INFO L93 Difference]: Finished difference Result 370479 states and 548510 transitions. [2020-10-27 22:49:57,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 22:49:57,110 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 95 [2020-10-27 22:49:57,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:49:58,150 INFO L225 Difference]: With dead ends: 370479 [2020-10-27 22:49:58,151 INFO L226 Difference]: Without dead ends: 248973 [2020-10-27 22:49:58,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2020-10-27 22:49:58,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248973 states.