/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:04:39,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:04:39,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:04:39,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:04:39,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:04:39,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:04:39,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:04:39,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:04:39,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:04:39,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:04:39,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:04:39,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:04:39,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:04:39,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:04:39,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:04:39,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:04:39,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:04:39,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:04:39,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:04:39,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:04:39,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:04:39,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:04:39,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:04:39,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:04:39,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:04:39,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:04:39,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:04:39,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:04:39,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:04:39,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:04:39,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:04:39,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:04:39,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:04:39,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:04:39,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:04:39,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:04:39,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:04:39,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:04:39,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:04:39,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:04:39,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:04:39,632 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 05:04:39,662 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:04:39,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:04:39,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:04:39,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:04:39,664 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:04:39,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:04:39,665 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:04:39,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:04:39,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:04:39,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:04:39,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:04:39,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:04:39,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:04:39,666 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:04:39,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:04:39,667 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:04:39,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:04:39,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:04:39,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:04:39,668 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:04:39,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:04:39,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:04:39,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:04:39,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:04:39,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:04:39,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:04:39,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:04:39,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:04:39,669 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:04:39,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:04:40,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:04:40,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:04:40,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:04:40,082 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:04:40,083 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:04:40,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 05:04:40,169 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9f5d459e/f887c2191e304131b0c8550e0400b755/FLAG4489ad367 [2020-10-27 05:04:40,882 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:04:40,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 05:04:40,904 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9f5d459e/f887c2191e304131b0c8550e0400b755/FLAG4489ad367 [2020-10-27 05:04:41,179 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9f5d459e/f887c2191e304131b0c8550e0400b755 [2020-10-27 05:04:41,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:04:41,191 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:04:41,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:04:41,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:04:41,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:04:41,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:04:41" (1/1) ... [2020-10-27 05:04:41,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34452dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:04:41, skipping insertion in model container [2020-10-27 05:04:41,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:04:41" (1/1) ... [2020-10-27 05:04:41,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:04:41,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:04:41,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:04:41,713 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:04:41,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:04:41,893 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:04:41,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:04:41 WrapperNode [2020-10-27 05:04:41,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:04:41,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:04:41,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:04:41,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:04:41,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:04:41" (1/1) ... [2020-10-27 05:04:41,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:04:41" (1/1) ... [2020-10-27 05:04:41,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:04:41" (1/1) ... [2020-10-27 05:04:41,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:04:41" (1/1) ... [2020-10-27 05:04:41,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:04:41" (1/1) ... [2020-10-27 05:04:42,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:04:41" (1/1) ... [2020-10-27 05:04:42,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:04:41" (1/1) ... [2020-10-27 05:04:42,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:04:42,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:04:42,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:04:42,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:04:42,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:04:41" (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 05:04:42,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:04:42,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:04:42,124 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:04:42,124 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:04:42,124 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:04:42,125 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:04:42,125 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:04:42,125 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:04:42,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:04:42,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:04:42,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 05:04:42,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:04:42,127 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:04:42,127 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:04:42,127 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:04:42,128 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:04:42,128 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:04:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:04:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:04:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:04:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:04:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:04:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:04:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:04:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:04:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:04:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:04:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:04:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:04:43,588 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:04:43,588 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:04:43,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:04:43 BoogieIcfgContainer [2020-10-27 05:04:43,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:04:43,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:04:43,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:04:43,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:04:43,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:04:41" (1/3) ... [2020-10-27 05:04:43,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44bbc341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:04:43, skipping insertion in model container [2020-10-27 05:04:43,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:04:41" (2/3) ... [2020-10-27 05:04:43,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44bbc341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:04:43, skipping insertion in model container [2020-10-27 05:04:43,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:04:43" (3/3) ... [2020-10-27 05:04:43,601 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 05:04:43,614 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:04:43,620 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:04:43,635 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:04:43,666 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:04:43,666 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:04:43,666 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:04:43,666 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:04:43,666 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:04:43,667 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:04:43,667 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:04:43,667 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:04:43,692 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-10-27 05:04:43,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 05:04:43,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:04:43,724 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:04:43,724 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:04:43,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:04:43,738 INFO L82 PathProgramCache]: Analyzing trace with hash -655812944, now seen corresponding path program 1 times [2020-10-27 05:04:43,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:04:43,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703691855] [2020-10-27 05:04:43,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:04:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:44,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:44,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:44,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:46,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:46,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:49,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:49,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 05:04:49,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:04:49,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-27 05:04:49,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:04:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 05:04:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 05:04:49,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:04:50,031 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:04:50,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:04:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:50,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:50,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:50,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:04:50,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:04:50,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 05:04:50,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:50,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:04:50,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:04:50,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:04:50,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:50,151 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 05:04:50,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703691855] [2020-10-27 05:04:50,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:04:50,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:04:50,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895170710] [2020-10-27 05:04:50,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:04:50,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:04:50,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:04:50,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:04:50,187 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 4 states. [2020-10-27 05:04:50,755 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 05:04:53,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:04:53,069 INFO L93 Difference]: Finished difference Result 602 states and 1036 transitions. [2020-10-27 05:04:53,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:04:53,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-10-27 05:04:53,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:04:53,096 INFO L225 Difference]: With dead ends: 602 [2020-10-27 05:04:53,096 INFO L226 Difference]: Without dead ends: 452 [2020-10-27 05:04:53,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:04:53,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-10-27 05:04:53,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 448. [2020-10-27 05:04:53,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-27 05:04:53,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 739 transitions. [2020-10-27 05:04:53,200 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 739 transitions. Word has length 115 [2020-10-27 05:04:53,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:04:53,201 INFO L481 AbstractCegarLoop]: Abstraction has 448 states and 739 transitions. [2020-10-27 05:04:53,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:04:53,202 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 739 transitions. [2020-10-27 05:04:53,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 05:04:53,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:04:53,207 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, 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 05:04:53,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:04:53,210 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:04:53,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:04:53,211 INFO L82 PathProgramCache]: Analyzing trace with hash 148684735, now seen corresponding path program 1 times [2020-10-27 05:04:53,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:04:53,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546355316] [2020-10-27 05:04:53,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:04:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:53,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:53,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:53,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:54,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:54,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:57,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:57,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:58,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:58,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 05:04:58,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:04:58,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 05:04:58,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:58,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:04:58,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:04:58,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 05:04:58,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 05:04:58,959 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:04:58,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:04:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:58,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:59,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:59,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:04:59,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:04:59,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 05:04:59,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:59,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:04:59,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:04:59,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:04:59,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:59,085 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 05:04:59,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546355316] [2020-10-27 05:04:59,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:04:59,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:04:59,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850358250] [2020-10-27 05:04:59,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:04:59,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:04:59,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:04:59,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:04:59,090 INFO L87 Difference]: Start difference. First operand 448 states and 739 transitions. Second operand 5 states. [2020-10-27 05:05:02,425 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:05:02,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:05:02,558 INFO L93 Difference]: Finished difference Result 1270 states and 2092 transitions. [2020-10-27 05:05:02,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:05:02,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-27 05:05:02,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:05:02,567 INFO L225 Difference]: With dead ends: 1270 [2020-10-27 05:05:02,567 INFO L226 Difference]: Without dead ends: 873 [2020-10-27 05:05:02,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:05:02,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2020-10-27 05:05:02,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 870. [2020-10-27 05:05:02,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 870 states. [2020-10-27 05:05:02,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1432 transitions. [2020-10-27 05:05:02,721 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1432 transitions. Word has length 118 [2020-10-27 05:05:02,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:05:02,721 INFO L481 AbstractCegarLoop]: Abstraction has 870 states and 1432 transitions. [2020-10-27 05:05:02,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:05:02,722 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1432 transitions. [2020-10-27 05:05:02,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 05:05:02,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:02,727 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, 1, 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 05:05:02,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:05:02,728 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:02,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:02,729 INFO L82 PathProgramCache]: Analyzing trace with hash 808687219, now seen corresponding path program 1 times [2020-10-27 05:05:02,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:02,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026774365] [2020-10-27 05:05:02,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:02,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:02,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:03,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:03,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:03,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:05,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:05,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:07,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:07,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 05:05:07,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:05:07,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 05:05:07,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:07,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:05:07,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:05:07,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 05:05:07,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:08,433 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:05:08,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:05:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:08,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:08,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:08,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:05:08,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:05:08,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:05:08,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:08,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:05:08,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:05:08,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:05:08,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:08,523 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 05:05:08,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026774365] [2020-10-27 05:05:08,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:05:08,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:05:08,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978452298] [2020-10-27 05:05:08,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:05:08,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:05:08,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:05:08,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:05:08,526 INFO L87 Difference]: Start difference. First operand 870 states and 1432 transitions. Second operand 5 states. [2020-10-27 05:05:11,174 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:05:11,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:05:11,297 INFO L93 Difference]: Finished difference Result 2545 states and 4189 transitions. [2020-10-27 05:05:11,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:05:11,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-27 05:05:11,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:05:11,312 INFO L225 Difference]: With dead ends: 2545 [2020-10-27 05:05:11,313 INFO L226 Difference]: Without dead ends: 1697 [2020-10-27 05:05:11,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:05:11,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2020-10-27 05:05:11,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1694. [2020-10-27 05:05:11,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1694 states. [2020-10-27 05:05:11,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 2771 transitions. [2020-10-27 05:05:11,467 INFO L78 Accepts]: Start accepts. Automaton has 1694 states and 2771 transitions. Word has length 120 [2020-10-27 05:05:11,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:05:11,469 INFO L481 AbstractCegarLoop]: Abstraction has 1694 states and 2771 transitions. [2020-10-27 05:05:11,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:05:11,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1694 states and 2771 transitions. [2020-10-27 05:05:11,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 05:05:11,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:11,475 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, 1, 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 05:05:11,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:05:11,480 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:11,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:11,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1681496823, now seen corresponding path program 1 times [2020-10-27 05:05:11,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:11,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852086789] [2020-10-27 05:05:11,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:11,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:11,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:11,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:12,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:12,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:12,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:16,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:16,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 05:05:16,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:05:16,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 05:05:16,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:16,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:05:16,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:05:16,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 05:05:16,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:17,195 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:05:17,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:05:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:17,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:17,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:17,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:05:17,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:05:17,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:05:17,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:17,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:05:17,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:05:17,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:05:17,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:17,295 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 05:05:17,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852086789] [2020-10-27 05:05:17,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:05:17,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:05:17,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154847423] [2020-10-27 05:05:17,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:05:17,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:05:17,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:05:17,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:05:17,299 INFO L87 Difference]: Start difference. First operand 1694 states and 2771 transitions. Second operand 5 states. [2020-10-27 05:05:19,913 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:05:20,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:05:20,056 INFO L93 Difference]: Finished difference Result 4884 states and 7981 transitions. [2020-10-27 05:05:20,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:05:20,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-27 05:05:20,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:05:20,075 INFO L225 Difference]: With dead ends: 4884 [2020-10-27 05:05:20,076 INFO L226 Difference]: Without dead ends: 3273 [2020-10-27 05:05:20,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:05:20,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2020-10-27 05:05:20,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 3270. [2020-10-27 05:05:20,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3270 states. [2020-10-27 05:05:20,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 5313 transitions. [2020-10-27 05:05:20,316 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 5313 transitions. Word has length 120 [2020-10-27 05:05:20,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:05:20,316 INFO L481 AbstractCegarLoop]: Abstraction has 3270 states and 5313 transitions. [2020-10-27 05:05:20,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:05:20,317 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 5313 transitions. [2020-10-27 05:05:20,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 05:05:20,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:20,324 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, 1, 1, 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 05:05:20,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:05:20,325 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:20,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:20,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1962548538, now seen corresponding path program 1 times [2020-10-27 05:05:20,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:20,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934321597] [2020-10-27 05:05:20,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:20,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:20,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:20,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:20,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:21,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:21,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:25,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:25,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 05:05:25,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:05:25,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 05:05:25,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:25,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:05:25,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:05:25,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 05:05:25,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:26,030 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:05:26,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:05:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:26,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:26,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:26,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:05:26,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:05:26,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 05:05:26,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:05:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:05:26,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:05:26,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:05:26,164 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 05:05:26,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934321597] [2020-10-27 05:05:26,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:05:26,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:05:26,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119757012] [2020-10-27 05:05:26,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:05:26,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:05:26,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:05:26,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:05:26,168 INFO L87 Difference]: Start difference. First operand 3270 states and 5313 transitions. Second operand 8 states. [2020-10-27 05:05:26,708 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:05:29,621 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-27 05:05:30,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:05:30,125 INFO L93 Difference]: Finished difference Result 7548 states and 12409 transitions. [2020-10-27 05:05:30,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:05:30,126 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 121 [2020-10-27 05:05:30,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:05:30,156 INFO L225 Difference]: With dead ends: 7548 [2020-10-27 05:05:30,157 INFO L226 Difference]: Without dead ends: 5645 [2020-10-27 05:05:30,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-27 05:05:30,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5645 states. [2020-10-27 05:05:30,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5645 to 3306. [2020-10-27 05:05:30,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3306 states. [2020-10-27 05:05:30,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3306 states to 3306 states and 5329 transitions. [2020-10-27 05:05:30,475 INFO L78 Accepts]: Start accepts. Automaton has 3306 states and 5329 transitions. Word has length 121 [2020-10-27 05:05:30,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:05:30,476 INFO L481 AbstractCegarLoop]: Abstraction has 3306 states and 5329 transitions. [2020-10-27 05:05:30,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:05:30,476 INFO L276 IsEmpty]: Start isEmpty. Operand 3306 states and 5329 transitions. [2020-10-27 05:05:30,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 05:05:30,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:30,484 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, 1, 1, 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 05:05:30,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:05:30,484 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:30,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:30,485 INFO L82 PathProgramCache]: Analyzing trace with hash 803516799, now seen corresponding path program 1 times [2020-10-27 05:05:30,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:30,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047270469] [2020-10-27 05:05:30,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:30,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:30,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:30,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:30,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:31,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:33,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:33,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:35,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:35,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 05:05:35,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:05:35,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-27 05:05:35,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:35,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:05:35,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:05:35,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 05:05:35,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:36,170 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:05:36,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:05:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:36,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:36,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:36,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:05:36,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:05:36,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 05:05:36,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:36,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:05:36,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:05:36,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:05:36,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:36,258 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 05:05:36,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047270469] [2020-10-27 05:05:36,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:05:36,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:05:36,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618367207] [2020-10-27 05:05:36,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:05:36,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:05:36,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:05:36,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:05:36,262 INFO L87 Difference]: Start difference. First operand 3306 states and 5329 transitions. Second operand 5 states. [2020-10-27 05:05:38,989 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:05:39,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:05:39,159 INFO L93 Difference]: Finished difference Result 9536 states and 15351 transitions. [2020-10-27 05:05:39,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:05:39,160 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-27 05:05:39,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:05:39,193 INFO L225 Difference]: With dead ends: 9536 [2020-10-27 05:05:39,194 INFO L226 Difference]: Without dead ends: 6397 [2020-10-27 05:05:39,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:05:39,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6397 states. [2020-10-27 05:05:39,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6397 to 6394. [2020-10-27 05:05:39,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6394 states. [2020-10-27 05:05:39,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6394 states to 6394 states and 10227 transitions. [2020-10-27 05:05:39,819 INFO L78 Accepts]: Start accepts. Automaton has 6394 states and 10227 transitions. Word has length 121 [2020-10-27 05:05:39,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:05:39,819 INFO L481 AbstractCegarLoop]: Abstraction has 6394 states and 10227 transitions. [2020-10-27 05:05:39,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:05:39,820 INFO L276 IsEmpty]: Start isEmpty. Operand 6394 states and 10227 transitions. [2020-10-27 05:05:39,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 05:05:39,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:39,838 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, 1, 1, 1, 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 05:05:39,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:05:39,838 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:39,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:39,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1237686682, now seen corresponding path program 1 times [2020-10-27 05:05:39,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:39,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369988971] [2020-10-27 05:05:39,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:39,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:39,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:40,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:40,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:40,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:40,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:40,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:40,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:40,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:44,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:44,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 05:05:44,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:05:44,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 05:05:44,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:44,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:05:44,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:05:44,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 05:05:44,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:45,511 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:05:45,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:05:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:45,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:45,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:45,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:05:45,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:05:45,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:05:45,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:05:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:05:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:05:45,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:45,609 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 05:05:45,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369988971] [2020-10-27 05:05:45,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:05:45,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:05:45,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390126264] [2020-10-27 05:05:45,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:05:45,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:05:45,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:05:45,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:05:45,612 INFO L87 Difference]: Start difference. First operand 6394 states and 10227 transitions. Second operand 5 states. [2020-10-27 05:05:48,830 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:05:49,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:05:49,205 INFO L93 Difference]: Finished difference Result 18585 states and 29707 transitions. [2020-10-27 05:05:49,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:05:49,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-27 05:05:49,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:05:49,259 INFO L225 Difference]: With dead ends: 18585 [2020-10-27 05:05:49,259 INFO L226 Difference]: Without dead ends: 12598 [2020-10-27 05:05:49,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:05:49,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12598 states. [2020-10-27 05:05:50,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12598 to 12595. [2020-10-27 05:05:50,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12595 states. [2020-10-27 05:05:50,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12595 states to 12595 states and 20055 transitions. [2020-10-27 05:05:50,529 INFO L78 Accepts]: Start accepts. Automaton has 12595 states and 20055 transitions. Word has length 122 [2020-10-27 05:05:50,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:05:50,530 INFO L481 AbstractCegarLoop]: Abstraction has 12595 states and 20055 transitions. [2020-10-27 05:05:50,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:05:50,530 INFO L276 IsEmpty]: Start isEmpty. Operand 12595 states and 20055 transitions. [2020-10-27 05:05:50,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 05:05:50,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:50,563 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, 1, 1, 1, 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 05:05:50,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:05:50,563 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:50,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:50,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1843922724, now seen corresponding path program 1 times [2020-10-27 05:05:50,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:50,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727975394] [2020-10-27 05:05:50,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:50,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:50,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:50,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:51,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:51,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:51,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:55,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:55,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 05:05:55,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:05:55,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 05:05:55,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:55,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:05:55,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:05:55,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 05:05:55,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:56,248 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:05:56,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:05:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:56,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:56,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:56,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:05:56,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:05:56,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:05:56,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:56,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:05:56,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:05:56,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:05:56,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:56,347 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 05:05:56,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727975394] [2020-10-27 05:05:56,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:05:56,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:05:56,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302316405] [2020-10-27 05:05:56,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:05:56,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:05:56,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:05:56,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:05:56,349 INFO L87 Difference]: Start difference. First operand 12595 states and 20055 transitions. Second operand 5 states. [2020-10-27 05:06:00,402 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:06:01,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:06:01,218 INFO L93 Difference]: Finished difference Result 36529 states and 58155 transitions. [2020-10-27 05:06:01,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:06:01,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-27 05:06:01,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:06:01,276 INFO L225 Difference]: With dead ends: 36529 [2020-10-27 05:06:01,276 INFO L226 Difference]: Without dead ends: 24526 [2020-10-27 05:06:01,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:06:01,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24526 states. [2020-10-27 05:06:03,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24526 to 24523. [2020-10-27 05:06:03,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24523 states. [2020-10-27 05:06:03,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24523 states to 24523 states and 38887 transitions. [2020-10-27 05:06:03,386 INFO L78 Accepts]: Start accepts. Automaton has 24523 states and 38887 transitions. Word has length 122 [2020-10-27 05:06:03,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:06:03,387 INFO L481 AbstractCegarLoop]: Abstraction has 24523 states and 38887 transitions. [2020-10-27 05:06:03,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:06:03,387 INFO L276 IsEmpty]: Start isEmpty. Operand 24523 states and 38887 transitions. [2020-10-27 05:06:03,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 05:06:03,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:06:03,421 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, 1, 1, 1, 1, 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 05:06:03,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:06:03,421 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:06:03,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:06:03,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1595896889, now seen corresponding path program 1 times [2020-10-27 05:06:03,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:06:03,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069274349] [2020-10-27 05:06:03,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:06:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:03,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:03,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:03,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:04,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:04,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:08,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:08,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 05:06:08,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:06:08,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 05:06:08,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:08,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:06:08,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:06:08,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 05:06:08,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:09,031 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:06:09,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:06:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:09,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:09,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:09,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:06:09,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:06:09,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:06:09,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:09,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:06:09,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:06:09,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:06:09,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:09,111 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 05:06:09,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069274349] [2020-10-27 05:06:09,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:06:09,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:06:09,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952194986] [2020-10-27 05:06:09,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:06:09,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:06:09,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:06:09,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:06:09,113 INFO L87 Difference]: Start difference. First operand 24523 states and 38887 transitions. Second operand 8 states. [2020-10-27 05:06:09,645 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:06:13,581 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-27 05:06:16,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:06:16,459 INFO L93 Difference]: Finished difference Result 46009 states and 74091 transitions. [2020-10-27 05:06:16,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:06:16,460 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-10-27 05:06:16,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:06:16,560 INFO L225 Difference]: With dead ends: 46009 [2020-10-27 05:06:16,560 INFO L226 Difference]: Without dead ends: 42182 [2020-10-27 05:06:16,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:06:16,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42182 states. [2020-10-27 05:06:19,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42182 to 24715. [2020-10-27 05:06:19,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24715 states. [2020-10-27 05:06:19,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24715 states to 24715 states and 39175 transitions. [2020-10-27 05:06:19,690 INFO L78 Accepts]: Start accepts. Automaton has 24715 states and 39175 transitions. Word has length 123 [2020-10-27 05:06:19,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:06:19,690 INFO L481 AbstractCegarLoop]: Abstraction has 24715 states and 39175 transitions. [2020-10-27 05:06:19,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:06:19,690 INFO L276 IsEmpty]: Start isEmpty. Operand 24715 states and 39175 transitions. [2020-10-27 05:06:19,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 05:06:19,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:06:19,717 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, 1, 1, 1, 1, 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 05:06:19,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:06:19,718 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:06:19,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:06:19,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1813720712, now seen corresponding path program 1 times [2020-10-27 05:06:19,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:06:19,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507930992] [2020-10-27 05:06:19,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:06:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:19,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:19,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:20,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:20,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:20,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:23,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:23,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 05:06:23,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:06:23,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3914 [2020-10-27 05:06:23,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:23,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:06:23,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 05:06:23,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 05:06:23,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:24,165 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:06:24,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:06:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:24,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:24,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:24,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:06:24,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:06:24,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:06:24,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:24,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:06:24,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:06:24,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:06:24,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:24,239 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 05:06:24,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507930992] [2020-10-27 05:06:24,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:06:24,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:06:24,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164964213] [2020-10-27 05:06:24,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:06:24,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:06:24,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:06:24,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:06:24,241 INFO L87 Difference]: Start difference. First operand 24715 states and 39175 transitions. Second operand 4 states. [2020-10-27 05:06:24,740 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 05:06:30,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:06:30,101 INFO L93 Difference]: Finished difference Result 52241 states and 83979 transitions. [2020-10-27 05:06:30,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:06:30,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-27 05:06:30,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:06:30,189 INFO L225 Difference]: With dead ends: 52241 [2020-10-27 05:06:30,190 INFO L226 Difference]: Without dead ends: 37934 [2020-10-27 05:06:30,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:06:30,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37934 states. [2020-10-27 05:06:34,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37934 to 37803. [2020-10-27 05:06:34,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37803 states. [2020-10-27 05:06:34,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37803 states to 37803 states and 60199 transitions. [2020-10-27 05:06:34,488 INFO L78 Accepts]: Start accepts. Automaton has 37803 states and 60199 transitions. Word has length 123 [2020-10-27 05:06:34,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:06:34,489 INFO L481 AbstractCegarLoop]: Abstraction has 37803 states and 60199 transitions. [2020-10-27 05:06:34,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:06:34,489 INFO L276 IsEmpty]: Start isEmpty. Operand 37803 states and 60199 transitions. [2020-10-27 05:06:34,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 05:06:34,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:06:34,515 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:06:34,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:06:34,515 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:06:34,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:06:34,516 INFO L82 PathProgramCache]: Analyzing trace with hash -2074117376, now seen corresponding path program 1 times [2020-10-27 05:06:34,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:06:34,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605429253] [2020-10-27 05:06:34,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:06:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:34,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:34,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:34,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:34,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:35,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:35,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:35,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:39,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:39,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 05:06:39,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:06:39,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 05:06:39,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:39,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:06:39,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:06:39,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-27 05:06:39,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:40,214 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:06:40,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:06:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:40,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:40,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:40,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:06:40,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:06:40,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 05:06:40,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:40,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:06:40,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:06:40,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:06:40,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:40,309 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 05:06:40,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605429253] [2020-10-27 05:06:40,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:06:40,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:06:40,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935688770] [2020-10-27 05:06:40,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:06:40,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:06:40,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:06:40,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:06:40,311 INFO L87 Difference]: Start difference. First operand 37803 states and 60199 transitions. Second operand 5 states. [2020-10-27 05:06:46,783 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:06:51,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:06:51,552 INFO L93 Difference]: Finished difference Result 110143 states and 175280 transitions. [2020-10-27 05:06:51,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:06:51,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-27 05:06:51,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:06:51,667 INFO L225 Difference]: With dead ends: 110143 [2020-10-27 05:06:51,668 INFO L226 Difference]: Without dead ends: 73852 [2020-10-27 05:06:51,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:06:51,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73852 states. [2020-10-27 05:07:00,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73852 to 73849. [2020-10-27 05:07:00,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73849 states. [2020-10-27 05:07:00,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73849 states to 73849 states and 116884 transitions. [2020-10-27 05:07:00,286 INFO L78 Accepts]: Start accepts. Automaton has 73849 states and 116884 transitions. Word has length 127 [2020-10-27 05:07:00,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:07:00,286 INFO L481 AbstractCegarLoop]: Abstraction has 73849 states and 116884 transitions. [2020-10-27 05:07:00,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:07:00,286 INFO L276 IsEmpty]: Start isEmpty. Operand 73849 states and 116884 transitions. [2020-10-27 05:07:00,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 05:07:00,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:07:00,335 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:00,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:07:00,336 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:07:00,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:07:00,336 INFO L82 PathProgramCache]: Analyzing trace with hash -334766762, now seen corresponding path program 1 times [2020-10-27 05:07:00,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:07:00,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099565426] [2020-10-27 05:07:00,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:07:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:00,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:00,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:00,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:00,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:00,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:04,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:05,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:05,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 05:07:05,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:07:05,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 05:07:05,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:05,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:07:05,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:07:05,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-27 05:07:05,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:05,977 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:07:05,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:07:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:05,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:06,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:06,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:07:06,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:07:06,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:07:06,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:06,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:07:06,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:07:06,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:07:06,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:06,069 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 05:07:06,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099565426] [2020-10-27 05:07:06,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:07:06,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:07:06,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852111497] [2020-10-27 05:07:06,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:07:06,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:07:06,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:07:06,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:07:06,071 INFO L87 Difference]: Start difference. First operand 73849 states and 116884 transitions. Second operand 5 states. [2020-10-27 05:07:16,247 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:07:27,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:07:27,131 INFO L93 Difference]: Finished difference Result 214610 states and 339392 transitions. [2020-10-27 05:07:27,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:07:27,132 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-27 05:07:27,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:07:27,444 INFO L225 Difference]: With dead ends: 214610 [2020-10-27 05:07:27,444 INFO L226 Difference]: Without dead ends: 144591 [2020-10-27 05:07:27,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:07:27,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144591 states. [2020-10-27 05:07:46,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144591 to 144588. [2020-10-27 05:07:46,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144588 states. [2020-10-27 05:07:46,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144588 states to 144588 states and 227740 transitions. [2020-10-27 05:07:46,609 INFO L78 Accepts]: Start accepts. Automaton has 144588 states and 227740 transitions. Word has length 129 [2020-10-27 05:07:46,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:07:46,609 INFO L481 AbstractCegarLoop]: Abstraction has 144588 states and 227740 transitions. [2020-10-27 05:07:46,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:07:46,609 INFO L276 IsEmpty]: Start isEmpty. Operand 144588 states and 227740 transitions. [2020-10-27 05:07:46,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 05:07:46,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:07:46,737 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:46,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:07:46,737 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:07:46,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:07:46,738 INFO L82 PathProgramCache]: Analyzing trace with hash 903728086, now seen corresponding path program 1 times [2020-10-27 05:07:46,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:07:46,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559735608] [2020-10-27 05:07:46,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:07:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:46,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:46,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:47,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:47,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:47,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:47,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:48,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:48,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:48,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:51,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:51,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 05:07:51,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:07:51,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 05:07:51,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:51,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:07:51,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:07:51,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 05:07:51,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:52,351 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:07:52,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:07:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:52,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:52,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:52,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:07:52,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:07:52,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:07:52,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:52,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:07:52,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:07:52,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:07:52,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:52,446 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 05:07:52,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559735608] [2020-10-27 05:07:52,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:07:52,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:07:52,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686922160] [2020-10-27 05:07:52,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:07:52,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:07:52,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:07:52,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:07:52,449 INFO L87 Difference]: Start difference. First operand 144588 states and 227740 transitions. Second operand 5 states. [2020-10-27 05:08:09,147 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 283