/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/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:38:54,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:38:54,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:38:54,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:38:54,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:38:54,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:38:54,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:38:54,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:38:54,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:38:54,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:38:54,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:38:54,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:38:54,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:38:54,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:38:54,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:38:54,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:38:54,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:38:54,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:38:54,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:38:54,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:38:54,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:38:54,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:38:54,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:38:54,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:38:54,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:38:54,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:38:54,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:38:54,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:38:54,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:38:54,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:38:54,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:38:54,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:38:54,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:38:54,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:38:54,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:38:54,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:38:54,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:38:54,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:38:54,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:38:54,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:38:54,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:38:55,001 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 04:38:55,048 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:38:55,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:38:55,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:38:55,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:38:55,053 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:38:55,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:38:55,053 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:38:55,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:38:55,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:38:55,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:38:55,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:38:55,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:38:55,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:38:55,056 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:38:55,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:38:55,056 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:38:55,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:38:55,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:38:55,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:38:55,057 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:38:55,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:38:55,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:38:55,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:38:55,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:38:55,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:38:55,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:38:55,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:38:55,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:38:55,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:38:55,071 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:38:55,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:38:55,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:38:55,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:38:55,484 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:38:55,485 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:38:55,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c [2020-10-27 04:38:55,568 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/952041735/f4a007af69ed4e108a2789ccba5b413e/FLAGb8931d0ad [2020-10-27 04:38:56,289 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:38:56,290 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c [2020-10-27 04:38:56,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/952041735/f4a007af69ed4e108a2789ccba5b413e/FLAGb8931d0ad [2020-10-27 04:38:56,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/952041735/f4a007af69ed4e108a2789ccba5b413e [2020-10-27 04:38:56,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:38:56,586 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:38:56,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:38:56,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:38:56,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:38:56,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:38:56" (1/1) ... [2020-10-27 04:38:56,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac6a7a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:56, skipping insertion in model container [2020-10-27 04:38:56,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:38:56" (1/1) ... [2020-10-27 04:38:56,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:38:56,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:38:56,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:38:57,009 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:38:57,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:38:57,102 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:38:57,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:57 WrapperNode [2020-10-27 04:38:57,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:38:57,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:38:57,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:38:57,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:38:57,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:57" (1/1) ... [2020-10-27 04:38:57,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:57" (1/1) ... [2020-10-27 04:38:57,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:57" (1/1) ... [2020-10-27 04:38:57,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:57" (1/1) ... [2020-10-27 04:38:57,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:57" (1/1) ... [2020-10-27 04:38:57,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:57" (1/1) ... [2020-10-27 04:38:57,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:57" (1/1) ... [2020-10-27 04:38:57,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:38:57,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:38:57,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:38:57,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:38:57,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:57" (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 04:38:57,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:38:57,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:38:57,283 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:38:57,284 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:38:57,284 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:38:57,285 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:38:57,285 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:38:57,285 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:38:57,286 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:38:57,286 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:38:57,287 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:38:57,287 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:38:57,288 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:38:57,288 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:38:57,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:38:57,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:38:57,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:38:57,289 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:38:57,289 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:38:57,289 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:38:57,290 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:38:57,290 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:38:57,290 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:38:57,290 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:38:57,290 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:38:57,290 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:38:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:38:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:38:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:38:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:38:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:38:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:38:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:38:58,201 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:38:58,201 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:38:58,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:38:58 BoogieIcfgContainer [2020-10-27 04:38:58,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:38:58,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:38:58,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:38:58,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:38:58,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:38:56" (1/3) ... [2020-10-27 04:38:58,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5edaf01d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:38:58, skipping insertion in model container [2020-10-27 04:38:58,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:57" (2/3) ... [2020-10-27 04:38:58,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5edaf01d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:38:58, skipping insertion in model container [2020-10-27 04:38:58,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:38:58" (3/3) ... [2020-10-27 04:38:58,217 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c [2020-10-27 04:38:58,230 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:38:58,237 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:38:58,251 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:38:58,299 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:38:58,299 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:38:58,299 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:38:58,299 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:38:58,299 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:38:58,300 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:38:58,300 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:38:58,300 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:38:58,331 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-10-27 04:38:58,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 04:38:58,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:38:58,351 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] [2020-10-27 04:38:58,351 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:38:58,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:38:58,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1937700257, now seen corresponding path program 1 times [2020-10-27 04:38:58,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:38:58,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917347627] [2020-10-27 04:38:58,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:38:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:58,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:59,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:59,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 04:38:59,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:59,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-27 04:38:59,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:59,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:59,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 04:38:59,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:59,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 16 [2020-10-27 04:38:59,408 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:38:59,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:38:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:59,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:59,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:59,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:38:59,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:59,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:38:59,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:59,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:59,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:59,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:59,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:59,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:38:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:59,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:59,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:59,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:38:59,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:59,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:38:59,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:59,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:59,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:59,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:59,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:59,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:38:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:59,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:59,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:59,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:38:59,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:59,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:38:59,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:59,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:59,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:38:59,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:59,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:38:59,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 04:38:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:59,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:59,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:59,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:59,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:59,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:38:59,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:59,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:59,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:59,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:59,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:59,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:38:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:59,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:59,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:59,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:59,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:59,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:38:59,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:59,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:59,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:59,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:59,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:59,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:38:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:59,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:59,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:59,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:59,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:59,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:38:59,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:59,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:59,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:59,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:59,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:59,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:38:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:59,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:59,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:59,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:38:59,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:59,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:38:59,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:59,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:59,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:38:59,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:59,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:59,715 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 04:38:59,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917347627] [2020-10-27 04:38:59,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:38:59,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 04:38:59,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764776173] [2020-10-27 04:38:59,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:38:59,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:38:59,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:38:59,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:38:59,740 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 6 states. [2020-10-27 04:39:01,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:39:01,064 INFO L93 Difference]: Finished difference Result 299 states and 471 transitions. [2020-10-27 04:39:01,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:39:01,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-27 04:39:01,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:39:01,079 INFO L225 Difference]: With dead ends: 299 [2020-10-27 04:39:01,079 INFO L226 Difference]: Without dead ends: 185 [2020-10-27 04:39:01,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:39:01,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-27 04:39:01,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 170. [2020-10-27 04:39:01,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-27 04:39:01,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 272 transitions. [2020-10-27 04:39:01,175 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 272 transitions. Word has length 66 [2020-10-27 04:39:01,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:39:01,176 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 272 transitions. [2020-10-27 04:39:01,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:39:01,177 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 272 transitions. [2020-10-27 04:39:01,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 04:39:01,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:39:01,188 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] [2020-10-27 04:39:01,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:39:01,189 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:39:01,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:39:01,190 INFO L82 PathProgramCache]: Analyzing trace with hash 92333091, now seen corresponding path program 1 times [2020-10-27 04:39:01,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:39:01,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68699913] [2020-10-27 04:39:01,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:39:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:01,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:02,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:02,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 04:39:02,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:02,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 840 [2020-10-27 04:39:02,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:02,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:39:02,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 04:39:02,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:39:02,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:02,437 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:39:02,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:39:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:02,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:02,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:02,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:39:02,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:02,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:39:02,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:02,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:02,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:39:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:02,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:02,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:02,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:39:02,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:02,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 04:39:02,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:02,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:39:02,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:02,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:39:02,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:02,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:39:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:02,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:02,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:02,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:39:02,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:02,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:39:02,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:02,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:39:02,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:39:02,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:39:02,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:02,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 04:39:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:02,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:02,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:02,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:02,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:02,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:39:02,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:02,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:39:02,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:39:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:02,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:02,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:02,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:02,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:02,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:39:02,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:02,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:02,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:02,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:02,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 04:39:02,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:39:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:02,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:02,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:02,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:02,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:02,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:39:02,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:02,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:02,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:02,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:02,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:02,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:39:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:02,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:02,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:02,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:39:02,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:02,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:39:02,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:02,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:02,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:39:02,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:02,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:02,900 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 04:39:02,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68699913] [2020-10-27 04:39:02,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:39:02,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 04:39:02,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938459970] [2020-10-27 04:39:02,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:39:02,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:39:02,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:39:02,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:39:02,906 INFO L87 Difference]: Start difference. First operand 170 states and 272 transitions. Second operand 12 states. [2020-10-27 04:39:03,543 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:39:03,899 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 04:39:04,330 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 04:39:04,674 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:39:06,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:39:06,476 INFO L93 Difference]: Finished difference Result 298 states and 469 transitions. [2020-10-27 04:39:06,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 04:39:06,477 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-10-27 04:39:06,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:39:06,481 INFO L225 Difference]: With dead ends: 298 [2020-10-27 04:39:06,481 INFO L226 Difference]: Without dead ends: 194 [2020-10-27 04:39:06,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:39:06,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-27 04:39:06,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 170. [2020-10-27 04:39:06,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-27 04:39:06,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 242 transitions. [2020-10-27 04:39:06,510 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 242 transitions. Word has length 66 [2020-10-27 04:39:06,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:39:06,510 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 242 transitions. [2020-10-27 04:39:06,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:39:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 242 transitions. [2020-10-27 04:39:06,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 04:39:06,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:39:06,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:39:06,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:39:06,512 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:39:06,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:39:06,513 INFO L82 PathProgramCache]: Analyzing trace with hash -2007534636, now seen corresponding path program 1 times [2020-10-27 04:39:06,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:39:06,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309590201] [2020-10-27 04:39:06,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:39:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:06,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:06,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:06,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:08,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:11,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:11,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 04:39:11,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:39:11,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 04:39:11,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:11,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:39:11,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 04:39:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 04:39:11,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:39:11,938 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:39:11,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:39:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:11,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:11,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:11,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:39:11,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:11,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:39:11,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:11,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:11,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:11,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:11,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:11,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:39:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:11,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:12,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:12,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:39:12,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 04:39:12,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 04:39:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:12,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:39:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:12,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:12,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:12,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:39:12,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:12,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:39:12,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:39:12,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 04:39:12,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:39:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:12,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:12,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:12,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:12,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:12,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 04:39:12,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:12,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:39:12,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:39:12,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:39:12,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:39:12,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:39:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:12,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:12,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:12,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:12,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:12,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:39:12,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:12,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:12,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:12,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:12,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:12,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 04:39:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:12,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:12,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:12,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:12,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:12,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:39:12,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:12,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:12,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:12,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:12,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:12,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:39:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:12,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:12,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:12,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:39:12,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:12,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:39:12,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:12,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:12,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:39:12,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:12,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:12,265 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 04:39:12,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309590201] [2020-10-27 04:39:12,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:39:12,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:39:12,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446962411] [2020-10-27 04:39:12,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:39:12,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:39:12,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:39:12,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:39:12,269 INFO L87 Difference]: Start difference. First operand 170 states and 242 transitions. Second operand 9 states. [2020-10-27 04:39:12,557 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:39:14,554 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:39:15,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:39:15,042 INFO L93 Difference]: Finished difference Result 397 states and 594 transitions. [2020-10-27 04:39:15,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:39:15,043 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-27 04:39:15,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:39:15,048 INFO L225 Difference]: With dead ends: 397 [2020-10-27 04:39:15,048 INFO L226 Difference]: Without dead ends: 299 [2020-10-27 04:39:15,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:39:15,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-27 04:39:15,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 260. [2020-10-27 04:39:15,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-27 04:39:15,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 375 transitions. [2020-10-27 04:39:15,116 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 375 transitions. Word has length 95 [2020-10-27 04:39:15,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:39:15,118 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 375 transitions. [2020-10-27 04:39:15,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:39:15,119 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 375 transitions. [2020-10-27 04:39:15,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 04:39:15,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:39:15,122 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] [2020-10-27 04:39:15,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:39:15,123 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:39:15,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:39:15,123 INFO L82 PathProgramCache]: Analyzing trace with hash -970540897, now seen corresponding path program 1 times [2020-10-27 04:39:15,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:39:15,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534319448] [2020-10-27 04:39:15,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:39:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:15,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:15,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:15,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:15,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:17,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:20,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:20,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 04:39:20,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:39:20,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 04:39:20,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:20,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:39:20,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:39:20,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 04:39:20,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:39:20,545 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:39:20,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:39:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:20,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:20,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:20,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:39:20,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:20,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:39:20,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:20,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:20,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:20,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:20,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:20,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:39:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:20,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:20,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:20,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:39:20,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:20,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 04:39:20,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:20,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:39:20,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:20,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:39:20,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:20,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:39:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:20,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:20,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:20,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:39:20,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:20,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:39:20,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:20,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:20,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:20,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:39:20,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:20,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:39:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:20,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:20,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:20,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:39:20,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:20,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:39:20,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:20,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:20,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:39:20,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:39:20,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:20,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:39:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:20,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:20,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:20,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:20,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:20,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:39:20,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:20,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:20,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:20,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:20,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:20,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:39:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:20,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:20,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:20,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:20,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:20,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:39:20,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:20,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:20,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:20,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:20,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:20,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 04:39:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:20,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:20,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:20,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:39:20,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:20,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:39:20,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:20,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:20,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:39:20,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:20,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:20,937 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 04:39:20,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534319448] [2020-10-27 04:39:20,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:39:20,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:39:20,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819692528] [2020-10-27 04:39:20,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:39:20,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:39:20,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:39:20,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:39:20,941 INFO L87 Difference]: Start difference. First operand 260 states and 375 transitions. Second operand 9 states. [2020-10-27 04:39:21,248 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:39:21,580 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 04:39:21,935 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 04:39:22,790 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-10-27 04:39:23,674 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:39:26,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:39:26,943 INFO L93 Difference]: Finished difference Result 956 states and 1393 transitions. [2020-10-27 04:39:26,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:39:26,944 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-10-27 04:39:26,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:39:26,950 INFO L225 Difference]: With dead ends: 956 [2020-10-27 04:39:26,950 INFO L226 Difference]: Without dead ends: 719 [2020-10-27 04:39:26,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:39:26,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2020-10-27 04:39:27,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 647. [2020-10-27 04:39:27,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-10-27 04:39:27,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 926 transitions. [2020-10-27 04:39:27,034 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 926 transitions. Word has length 97 [2020-10-27 04:39:27,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:39:27,034 INFO L481 AbstractCegarLoop]: Abstraction has 647 states and 926 transitions. [2020-10-27 04:39:27,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:39:27,035 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 926 transitions. [2020-10-27 04:39:27,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 04:39:27,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:39:27,037 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] [2020-10-27 04:39:27,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:39:27,037 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:39:27,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:39:27,038 INFO L82 PathProgramCache]: Analyzing trace with hash -828798199, now seen corresponding path program 1 times [2020-10-27 04:39:27,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:39:27,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088536789] [2020-10-27 04:39:27,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:39:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:27,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:27,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:27,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:27,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:27,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:32,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:32,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:32,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 04:39:32,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:39:32,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 04:39:32,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:32,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:39:32,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:39:32,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 04:39:32,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:32,427 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:39:32,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:39:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:32,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:32,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:32,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:39:32,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:32,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:39:32,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:32,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:32,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:32,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:32,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:39:32,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:39:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:32,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:32,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:32,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:39:32,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:32,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 04:39:32,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:32,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:39:32,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:32,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:39:32,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:32,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:39:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:32,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:32,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:32,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:39:32,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:32,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:39:32,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:32,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:32,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:32,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:39:32,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:32,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:39:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:32,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:32,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:32,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:39:32,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:32,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:39:32,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:32,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:32,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:39:32,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:39:32,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:32,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:39:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:32,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:32,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:32,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:32,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:32,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:39:32,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:32,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:32,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:32,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:32,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:32,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 04:39:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:32,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:32,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:32,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:32,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:32,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:39:32,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:32,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:32,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:32,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:32,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:32,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 04:39:32,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:32,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:32,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:32,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:39:32,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:32,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:39:32,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:32,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:32,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:39:32,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:32,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:32,829 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 04:39:32,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088536789] [2020-10-27 04:39:32,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:39:32,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:39:32,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084971459] [2020-10-27 04:39:32,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:39:32,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:39:32,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:39:32,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:39:32,833 INFO L87 Difference]: Start difference. First operand 647 states and 926 transitions. Second operand 9 states. [2020-10-27 04:39:33,187 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:39:33,535 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:39:33,924 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:39:34,242 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:39:35,072 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:39:37,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:39:37,662 INFO L93 Difference]: Finished difference Result 1924 states and 2786 transitions. [2020-10-27 04:39:37,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:39:37,668 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-10-27 04:39:37,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:39:37,676 INFO L225 Difference]: With dead ends: 1924 [2020-10-27 04:39:37,676 INFO L226 Difference]: Without dead ends: 1310 [2020-10-27 04:39:37,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:39:37,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2020-10-27 04:39:37,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1195. [2020-10-27 04:39:37,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1195 states. [2020-10-27 04:39:37,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1694 transitions. [2020-10-27 04:39:37,785 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1694 transitions. Word has length 98 [2020-10-27 04:39:37,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:39:37,785 INFO L481 AbstractCegarLoop]: Abstraction has 1195 states and 1694 transitions. [2020-10-27 04:39:37,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:39:37,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1694 transitions. [2020-10-27 04:39:37,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 04:39:37,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:39:37,789 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] [2020-10-27 04:39:37,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:39:37,789 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:39:37,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:39:37,790 INFO L82 PathProgramCache]: Analyzing trace with hash -218399575, now seen corresponding path program 1 times [2020-10-27 04:39:37,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:39:37,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408443519] [2020-10-27 04:39:37,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:39:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:37,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:37,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:37,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:37,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:40,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:42,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:42,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 04:39:42,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:39:42,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 04:39:42,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:42,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:39:42,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:39:42,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 04:39:42,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:43,164 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:39:43,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:39:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:43,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:43,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:43,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:39:43,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:43,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:39:43,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:43,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:43,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:43,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:43,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:43,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:39:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:43,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:43,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:43,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:39:43,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:43,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 04:39:43,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:43,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:39:43,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:43,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:39:43,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:43,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:39:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:43,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:43,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:43,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:39:43,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:43,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:39:43,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:43,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:43,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:43,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:39:43,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:43,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:39:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:43,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:43,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:43,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:39:43,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:43,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:39:43,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:43,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:43,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:39:43,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:39:43,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:43,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:39:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:43,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:43,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:43,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:43,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:43,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:39:43,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:43,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:43,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:43,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:43,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:43,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 04:39:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:43,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:43,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:43,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:43,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:43,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:39:43,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:43,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:43,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:43,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:43,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:43,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 04:39:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:43,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:43,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:43,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:39:43,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:43,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:39:43,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:43,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:43,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:39:43,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:43,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:43,525 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 04:39:43,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408443519] [2020-10-27 04:39:43,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:39:43,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:39:43,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426013267] [2020-10-27 04:39:43,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:39:43,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:39:43,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:39:43,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:39:43,527 INFO L87 Difference]: Start difference. First operand 1195 states and 1694 transitions. Second operand 9 states. [2020-10-27 04:39:43,835 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:39:44,193 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:39:44,549 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:39:45,534 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-10-27 04:39:46,292 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:39:49,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:39:49,619 INFO L93 Difference]: Finished difference Result 4412 states and 6297 transitions. [2020-10-27 04:39:49,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:39:49,621 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-10-27 04:39:49,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:39:49,640 INFO L225 Difference]: With dead ends: 4412 [2020-10-27 04:39:49,641 INFO L226 Difference]: Without dead ends: 3298 [2020-10-27 04:39:49,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:39:49,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3298 states. [2020-10-27 04:39:49,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3298 to 3046. [2020-10-27 04:39:49,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3046 states. [2020-10-27 04:39:49,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 4249 transitions. [2020-10-27 04:39:49,901 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 4249 transitions. Word has length 98 [2020-10-27 04:39:49,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:39:49,901 INFO L481 AbstractCegarLoop]: Abstraction has 3046 states and 4249 transitions. [2020-10-27 04:39:49,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:39:49,902 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 4249 transitions. [2020-10-27 04:39:49,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 04:39:49,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:39:49,909 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] [2020-10-27 04:39:49,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:39:49,909 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:39:49,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:39:49,910 INFO L82 PathProgramCache]: Analyzing trace with hash 903064119, now seen corresponding path program 1 times [2020-10-27 04:39:49,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:39:49,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222740930] [2020-10-27 04:39:49,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:39:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:49,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:49,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:50,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:50,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:50,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:54,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:54,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:39:54,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:39:54,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 04:39:54,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:54,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:39:54,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:39:54,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 04:39:54,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:55,271 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:39:55,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:39:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:55,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:55,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:55,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:39:55,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:55,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 04:39:55,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:55,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:55,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:55,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:39:55,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:55,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:39:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:55,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:55,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:55,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:39:55,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:55,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 04:39:55,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:55,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:39:55,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:55,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 04:39:55,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:55,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:39:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:55,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:55,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:55,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:39:55,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:55,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:39:55,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:55,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:55,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:55,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:39:55,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:55,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:39:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:55,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:55,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:55,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:39:55,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:55,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:39:55,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:55,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:39:55,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:39:55,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:39:55,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:55,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:39:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:55,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:55,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:55,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:55,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:55,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:39:55,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:55,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:55,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:55,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:55,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:55,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:39:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:55,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:55,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:55,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:55,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:55,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:39:55,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:55,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:55,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 04:39:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:55,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:55,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:55,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:39:55,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:55,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:39:55,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:55,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:55,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:39:55,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:55,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:55,672 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 04:39:55,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222740930] [2020-10-27 04:39:55,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:39:55,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:39:55,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682784006] [2020-10-27 04:39:55,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:39:55,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:39:55,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:39:55,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:39:55,675 INFO L87 Difference]: Start difference. First operand 3046 states and 4249 transitions. Second operand 14 states. [2020-10-27 04:39:56,073 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:39:56,386 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:39:57,047 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:39:57,657 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:40:00,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:40:00,623 INFO L93 Difference]: Finished difference Result 5794 states and 8387 transitions. [2020-10-27 04:40:00,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:40:00,624 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 99 [2020-10-27 04:40:00,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:40:00,652 INFO L225 Difference]: With dead ends: 5794 [2020-10-27 04:40:00,652 INFO L226 Difference]: Without dead ends: 4981 [2020-10-27 04:40:00,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:40:00,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4981 states. [2020-10-27 04:40:00,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4981 to 3576. [2020-10-27 04:40:00,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3576 states. [2020-10-27 04:40:00,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3576 states to 3576 states and 5032 transitions. [2020-10-27 04:40:00,964 INFO L78 Accepts]: Start accepts. Automaton has 3576 states and 5032 transitions. Word has length 99 [2020-10-27 04:40:00,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:40:00,965 INFO L481 AbstractCegarLoop]: Abstraction has 3576 states and 5032 transitions. [2020-10-27 04:40:00,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:40:00,965 INFO L276 IsEmpty]: Start isEmpty. Operand 3576 states and 5032 transitions. [2020-10-27 04:40:00,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 04:40:00,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:40:00,974 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] [2020-10-27 04:40:00,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:40:00,974 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:40:00,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:40:00,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1340919179, now seen corresponding path program 1 times [2020-10-27 04:40:00,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:40:00,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277035127] [2020-10-27 04:40:00,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:40:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:01,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:01,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:01,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:01,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:03,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:06,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:06,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:40:06,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:40:06,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 04:40:06,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:06,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:06,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:40:06,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 04:40:06,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:06,341 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:40:06,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:40:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:06,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:06,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:06,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:40:06,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:06,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:40:06,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:06,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:06,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:06,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:06,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:06,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:40:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:06,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:06,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:06,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:40:06,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:06,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 04:40:06,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:06,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:06,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:06,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:40:06,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:06,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:40:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:06,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:06,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:06,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:40:06,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:06,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:40:06,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:06,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:06,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:06,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:40:06,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:06,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:40:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:06,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:06,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:06,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:40:06,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:06,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:40:06,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:06,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:06,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:40:06,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:40:06,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:06,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:40:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:06,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:06,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:06,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:06,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:06,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:40:06,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:06,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:06,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:40:06,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:06,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:06,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:40:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:06,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:06,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:06,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:06,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:06,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:40:06,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:06,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:06,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:40:06,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:06,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:06,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 04:40:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:06,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:06,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:06,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:40:06,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:06,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:40:06,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:06,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:06,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:40:06,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:06,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:06,762 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 04:40:06,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277035127] [2020-10-27 04:40:06,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:40:06,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:40:06,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467394217] [2020-10-27 04:40:06,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:40:06,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:40:06,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:40:06,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:40:06,768 INFO L87 Difference]: Start difference. First operand 3576 states and 5032 transitions. Second operand 9 states. [2020-10-27 04:40:07,215 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:40:07,578 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 04:40:08,025 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 04:40:08,661 WARN L193 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-10-27 04:40:09,673 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:40:13,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:40:13,358 INFO L93 Difference]: Finished difference Result 10905 states and 15624 transitions. [2020-10-27 04:40:13,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:40:13,366 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-27 04:40:13,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:40:13,408 INFO L225 Difference]: With dead ends: 10905 [2020-10-27 04:40:13,408 INFO L226 Difference]: Without dead ends: 7951 [2020-10-27 04:40:13,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:40:13,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7951 states. [2020-10-27 04:40:14,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7951 to 7428. [2020-10-27 04:40:14,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7428 states. [2020-10-27 04:40:14,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7428 states to 7428 states and 10315 transitions. [2020-10-27 04:40:14,075 INFO L78 Accepts]: Start accepts. Automaton has 7428 states and 10315 transitions. Word has length 99 [2020-10-27 04:40:14,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:40:14,075 INFO L481 AbstractCegarLoop]: Abstraction has 7428 states and 10315 transitions. [2020-10-27 04:40:14,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:40:14,075 INFO L276 IsEmpty]: Start isEmpty. Operand 7428 states and 10315 transitions. [2020-10-27 04:40:14,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 04:40:14,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:40:14,095 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] [2020-10-27 04:40:14,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:40:14,095 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:40:14,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:40:14,096 INFO L82 PathProgramCache]: Analyzing trace with hash -208840796, now seen corresponding path program 1 times [2020-10-27 04:40:14,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:40:14,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952460508] [2020-10-27 04:40:14,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:40:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:14,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:14,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:14,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:14,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:14,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:19,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:19,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:40:19,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:40:19,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:40:19,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:19,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:40:19,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 04:40:19,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:40:19,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:19,431 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:40:19,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:40:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:19,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:19,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:19,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:40:19,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:19,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:40:19,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:19,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:19,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:19,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:19,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:19,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:40:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:19,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:19,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:19,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:40:19,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:19,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 04:40:19,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:19,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:19,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:19,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:40:19,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:19,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:40:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:19,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:19,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:19,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:40:19,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:19,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:40:19,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:19,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:19,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:19,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:40:19,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:19,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:40:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:19,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:19,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:19,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:40:19,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:19,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:40:19,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:19,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:19,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:19,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:40:19,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:19,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:40:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:19,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:19,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:19,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:19,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:19,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:40:19,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:19,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:40:19,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:40:19,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:40:19,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:19,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:40:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:19,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:19,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:19,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:19,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:19,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:40:19,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:19,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:19,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:40:19,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:19,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:19,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 04:40:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:19,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:19,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:19,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:40:19,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:19,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:40:19,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:19,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:19,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:40:19,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:19,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:19,702 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 04:40:19,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952460508] [2020-10-27 04:40:19,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:40:19,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:40:19,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109648925] [2020-10-27 04:40:19,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:40:19,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:40:19,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:40:19,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:40:19,704 INFO L87 Difference]: Start difference. First operand 7428 states and 10315 transitions. Second operand 9 states. [2020-10-27 04:40:20,031 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:40:23,069 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:40:23,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:40:23,378 INFO L93 Difference]: Finished difference Result 17452 states and 24829 transitions. [2020-10-27 04:40:23,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:40:23,379 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-27 04:40:23,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:40:23,447 INFO L225 Difference]: With dead ends: 17452 [2020-10-27 04:40:23,447 INFO L226 Difference]: Without dead ends: 12216 [2020-10-27 04:40:23,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:40:23,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12216 states. [2020-10-27 04:40:24,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12216 to 11147. [2020-10-27 04:40:24,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11147 states. [2020-10-27 04:40:24,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11147 states to 11147 states and 15568 transitions. [2020-10-27 04:40:24,496 INFO L78 Accepts]: Start accepts. Automaton has 11147 states and 15568 transitions. Word has length 99 [2020-10-27 04:40:24,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:40:24,497 INFO L481 AbstractCegarLoop]: Abstraction has 11147 states and 15568 transitions. [2020-10-27 04:40:24,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:40:24,497 INFO L276 IsEmpty]: Start isEmpty. Operand 11147 states and 15568 transitions. [2020-10-27 04:40:24,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 04:40:24,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:40:24,518 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] [2020-10-27 04:40:24,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:40:24,518 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:40:24,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:40:24,519 INFO L82 PathProgramCache]: Analyzing trace with hash 861785409, now seen corresponding path program 1 times [2020-10-27 04:40:24,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:40:24,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124015238] [2020-10-27 04:40:24,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:40:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:24,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:24,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:24,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:24,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:24,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:26,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:29,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:29,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 04:40:29,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:40:29,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:40:29,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:29,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:29,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:40:29,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 04:40:29,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:29,885 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:40:29,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:40:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:29,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:29,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:29,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:40:29,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:29,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:40:29,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:29,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:29,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:29,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:29,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:29,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:40:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:29,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:29,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:29,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:40:29,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:29,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 04:40:29,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:29,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:29,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:29,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:40:29,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:30,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:40:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:30,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:30,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:30,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:40:30,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:30,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:40:30,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:30,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:30,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:30,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:40:30,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:30,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:40:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:30,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:30,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:30,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:40:30,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:30,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:40:30,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:30,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:30,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:30,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:40:30,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:30,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:40:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:30,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:30,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:30,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:40:30,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:30,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:40:30,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:40:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:40:30,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:30,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 04:40:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:30,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:30,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:30,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:30,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:30,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:40:30,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:30,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:30,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:40:30,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:30,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:30,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 04:40:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:30,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:30,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:30,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:40:30,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:30,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:40:30,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:30,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:30,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:40:30,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:30,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:30,252 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 04:40:30,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124015238] [2020-10-27 04:40:30,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:40:30,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:40:30,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821883962] [2020-10-27 04:40:30,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:40:30,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:40:30,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:40:30,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:40:30,258 INFO L87 Difference]: Start difference. First operand 11147 states and 15568 transitions. Second operand 9 states. [2020-10-27 04:40:30,606 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:40:30,958 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 04:40:31,383 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 04:40:32,033 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-10-27 04:40:33,150 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:40:38,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:40:38,118 INFO L93 Difference]: Finished difference Result 36072 states and 51332 transitions. [2020-10-27 04:40:38,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:40:38,119 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-27 04:40:38,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:40:38,234 INFO L225 Difference]: With dead ends: 36072 [2020-10-27 04:40:38,234 INFO L226 Difference]: Without dead ends: 26365 [2020-10-27 04:40:38,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:40:38,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26365 states. [2020-10-27 04:40:40,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26365 to 24507. [2020-10-27 04:40:40,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24507 states. [2020-10-27 04:40:40,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24507 states to 24507 states and 33943 transitions. [2020-10-27 04:40:40,537 INFO L78 Accepts]: Start accepts. Automaton has 24507 states and 33943 transitions. Word has length 102 [2020-10-27 04:40:40,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:40:40,538 INFO L481 AbstractCegarLoop]: Abstraction has 24507 states and 33943 transitions. [2020-10-27 04:40:40,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:40:40,538 INFO L276 IsEmpty]: Start isEmpty. Operand 24507 states and 33943 transitions. [2020-10-27 04:40:40,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 04:40:40,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:40:40,574 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] [2020-10-27 04:40:40,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:40:40,575 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:40:40,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:40:40,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1583545452, now seen corresponding path program 1 times [2020-10-27 04:40:40,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:40:40,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991996218] [2020-10-27 04:40:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:40:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:40,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:40,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:40,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:40,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:40,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:40,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:41,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:45,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:45,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 04:40:45,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:40:45,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 04:40:45,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:45,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:45,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:40:45,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 04:40:45,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:45,917 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:40:45,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:40:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:45,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:45,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:45,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:40:45,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:45,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:40:45,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:45,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:45,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:45,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:45,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:45,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:40:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:45,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:45,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:45,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:46,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:46,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 04:40:46,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:40:46,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 04:40:46,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:46,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:46,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:40:46,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:46,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:40:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:46,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:46,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:46,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:40:46,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:46,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:40:46,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:46,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:46,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:46,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:40:46,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:46,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:40:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:46,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:46,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:46,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:40:46,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:46,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:40:46,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:46,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:46,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:46,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:40:46,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:46,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:40:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:46,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:46,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:46,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:40:46,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:46,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:40:46,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:46,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:46,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:40:46,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:40:46,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:46,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 04:40:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:46,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:46,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:46,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:46,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:46,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:40:46,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:40:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:46,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:46,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 04:40:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:46,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:46,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:46,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:40:46,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:46,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:40:46,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:46,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:46,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:40:46,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:46,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:46,299 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 04:40:46,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991996218] [2020-10-27 04:40:46,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:40:46,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:40:46,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925523882] [2020-10-27 04:40:46,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:40:46,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:40:46,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:40:46,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:40:46,301 INFO L87 Difference]: Start difference. First operand 24507 states and 33943 transitions. Second operand 9 states. [2020-10-27 04:40:46,642 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:40:46,993 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 04:40:47,685 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-10-27 04:40:48,042 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 04:40:49,287 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:40:49,762 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-27 04:40:55,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:40:55,491 INFO L93 Difference]: Finished difference Result 81650 states and 114631 transitions. [2020-10-27 04:40:55,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:40:55,492 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-27 04:40:55,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:40:55,710 INFO L225 Difference]: With dead ends: 81650 [2020-10-27 04:40:55,710 INFO L226 Difference]: Without dead ends: 60276 [2020-10-27 04:40:55,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:40:55,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60276 states. [2020-10-27 04:40:59,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60276 to 56829. [2020-10-27 04:40:59,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56829 states. [2020-10-27 04:41:00,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56829 states to 56829 states and 77930 transitions. [2020-10-27 04:41:00,028 INFO L78 Accepts]: Start accepts. Automaton has 56829 states and 77930 transitions. Word has length 102 [2020-10-27 04:41:00,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:41:00,028 INFO L481 AbstractCegarLoop]: Abstraction has 56829 states and 77930 transitions. [2020-10-27 04:41:00,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:41:00,029 INFO L276 IsEmpty]: Start isEmpty. Operand 56829 states and 77930 transitions. [2020-10-27 04:41:00,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 04:41:00,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:41:00,142 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] [2020-10-27 04:41:00,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:41:00,143 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:41:00,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:41:00,143 INFO L82 PathProgramCache]: Analyzing trace with hash -591650540, now seen corresponding path program 1 times [2020-10-27 04:41:00,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:41:00,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689807113] [2020-10-27 04:41:00,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:41:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:00,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:00,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:00,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:00,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:00,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:00,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:05,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:05,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 04:41:05,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:41:05,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 04:41:05,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:05,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:41:05,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 04:41:05,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 04:41:05,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:05,487 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:41:05,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:41:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:05,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:05,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:05,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:41:05,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:05,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:41:05,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:05,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:05,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:05,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:05,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:05,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:41:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:05,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:05,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:05,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:41:05,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:05,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:41:05,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:05,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:05,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:05,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:41:05,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:05,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:41:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:05,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:05,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:05,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:41:05,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:05,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:41:05,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:05,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:05,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:05,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:41:05,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:05,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:41:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:05,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:05,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:05,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:41:05,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:05,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:41:05,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:05,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:05,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:05,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:41:05,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:05,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:41:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:05,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:05,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:05,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:41:05,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:05,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:41:05,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:05,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:05,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:41:05,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:05,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:41:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:05,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:05,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:05,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:41:05,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:05,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:41:05,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:05,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:41:05,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:41:05,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:41:05,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:05,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 04:41:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:05,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:05,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:05,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:41:05,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:05,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:41:05,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:05,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:05,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:41:05,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:05,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:05,735 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 04:41:05,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689807113] [2020-10-27 04:41:05,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:41:05,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:41:05,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158712083] [2020-10-27 04:41:05,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:41:05,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:41:05,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:41:05,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:41:05,737 INFO L87 Difference]: Start difference. First operand 56829 states and 77930 transitions. Second operand 9 states. [2020-10-27 04:41:06,090 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:41:12,101 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:41:13,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:41:13,764 INFO L93 Difference]: Finished difference Result 128798 states and 177697 transitions. [2020-10-27 04:41:13,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:41:13,765 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-27 04:41:13,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:41:14,224 INFO L225 Difference]: With dead ends: 128798 [2020-10-27 04:41:14,224 INFO L226 Difference]: Without dead ends: 83824 [2020-10-27 04:41:14,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:41:14,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83824 states. [2020-10-27 04:41:19,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83824 to 78192. [2020-10-27 04:41:19,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78192 states. [2020-10-27 04:41:20,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78192 states to 78192 states and 106327 transitions. [2020-10-27 04:41:20,150 INFO L78 Accepts]: Start accepts. Automaton has 78192 states and 106327 transitions. Word has length 103 [2020-10-27 04:41:20,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:41:20,150 INFO L481 AbstractCegarLoop]: Abstraction has 78192 states and 106327 transitions. [2020-10-27 04:41:20,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:41:20,150 INFO L276 IsEmpty]: Start isEmpty. Operand 78192 states and 106327 transitions. [2020-10-27 04:41:20,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 04:41:20,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:41:20,197 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] [2020-10-27 04:41:20,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:41:20,198 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:41:20,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:41:20,198 INFO L82 PathProgramCache]: Analyzing trace with hash -213102516, now seen corresponding path program 1 times [2020-10-27 04:41:20,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:41:20,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691425227] [2020-10-27 04:41:20,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:41:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:20,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:20,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:20,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:20,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:20,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:20,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:22,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:22,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:25,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:25,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 04:41:25,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:41:25,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 04:41:25,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:25,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:41:25,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:41:25,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 04:41:25,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:25,546 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:41:25,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:41:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:25,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:25,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:25,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:41:25,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:25,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:41:25,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:25,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:25,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:25,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:25,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:25,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:41:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:25,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:25,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:25,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:25,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:25,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:25,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:25,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 04:41:25,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:41:25,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-27 04:41:25,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:25,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:41:25,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:25,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:41:25,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:25,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 04:41:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:25,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:25,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:25,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:41:25,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:25,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:41:25,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:25,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:25,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:25,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:41:25,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:26,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:41:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:26,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:26,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:26,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:41:26,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:26,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:41:26,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:41:26,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:26,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 04:41:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:26,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:26,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:26,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:41:26,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:26,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:41:26,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:26,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:26,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:41:26,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:41:26,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:26,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:41:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:26,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:26,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:26,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:41:26,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:26,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:41:26,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:26,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:26,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:41:26,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:26,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:26,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:41:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:26,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:26,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:26,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:41:26,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:26,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:41:26,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:26,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:26,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:41:26,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:26,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:26,191 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 04:41:26,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691425227] [2020-10-27 04:41:26,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:41:26,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:41:26,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096203123] [2020-10-27 04:41:26,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:41:26,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:41:26,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:41:26,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:41:26,193 INFO L87 Difference]: Start difference. First operand 78192 states and 106327 transitions. Second operand 9 states. [2020-10-27 04:41:26,558 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:41:26,899 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:41:27,305 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:41:27,640 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:41:28,862 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:41:37,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:41:37,526 INFO L93 Difference]: Finished difference Result 127783 states and 173256 transitions. [2020-10-27 04:41:37,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:41:37,527 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-27 04:41:37,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:41:37,855 INFO L225 Difference]: With dead ends: 127783 [2020-10-27 04:41:37,855 INFO L226 Difference]: Without dead ends: 94674 [2020-10-27 04:41:38,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:41:38,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94674 states. [2020-10-27 04:41:44,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94674 to 86997. [2020-10-27 04:41:44,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86997 states. [2020-10-27 04:41:44,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86997 states to 86997 states and 117379 transitions. [2020-10-27 04:41:44,288 INFO L78 Accepts]: Start accepts. Automaton has 86997 states and 117379 transitions. Word has length 106 [2020-10-27 04:41:44,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:41:44,289 INFO L481 AbstractCegarLoop]: Abstraction has 86997 states and 117379 transitions. [2020-10-27 04:41:44,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:41:44,289 INFO L276 IsEmpty]: Start isEmpty. Operand 86997 states and 117379 transitions. [2020-10-27 04:41:44,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 04:41:44,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:41:44,580 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] [2020-10-27 04:41:44,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:41:44,580 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:41:44,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:41:44,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1896211894, now seen corresponding path program 1 times [2020-10-27 04:41:44,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:41:44,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385201021] [2020-10-27 04:41:44,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:41:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:44,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:44,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:44,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:44,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:44,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:48,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:48,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:48,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:49,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:49,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 04:41:49,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:41:49,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 04:41:49,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:49,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:41:49,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:41:49,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 04:41:49,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:49,912 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:41:49,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:41:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:49,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:49,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:49,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:41:49,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:49,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:41:49,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:49,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:49,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:49,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:49,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:49,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:41:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:49,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:49,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:49,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:49,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:49,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:50,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:50,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 04:41:50,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:41:50,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 937 [2020-10-27 04:41:50,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:50,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:41:50,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:50,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:41:50,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:50,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 04:41:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:50,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:50,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:50,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:41:50,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:50,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:41:50,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:50,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:50,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:50,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:41:50,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:50,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:41:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:50,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:50,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:50,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:41:50,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:50,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:41:50,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:50,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:50,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:50,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:41:50,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:51,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:41:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:51,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:51,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:51,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:41:51,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:51,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:41:51,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:51,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:51,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:51,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:41:51,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:51,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:41:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:51,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:51,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:51,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:41:51,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:51,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:41:51,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:51,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:51,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:41:51,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:41:51,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:51,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:41:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:51,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:51,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:51,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:41:51,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:51,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:41:51,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:51,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:51,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:41:51,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:51,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:51,158 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 04:41:51,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385201021] [2020-10-27 04:41:51,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:41:51,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:41:51,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151544258] [2020-10-27 04:41:51,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:41:51,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:41:51,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:41:51,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:41:51,161 INFO L87 Difference]: Start difference. First operand 86997 states and 117379 transitions. Second operand 9 states. [2020-10-27 04:41:51,492 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:41:51,807 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:41:52,167 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:41:52,490 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:41:53,519 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:42:00,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:42:00,672 INFO L93 Difference]: Finished difference Result 131031 states and 176479 transitions. [2020-10-27 04:42:00,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:42:00,673 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-27 04:42:00,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:42:01,044 INFO L225 Difference]: With dead ends: 131031 [2020-10-27 04:42:01,044 INFO L226 Difference]: Without dead ends: 91532 [2020-10-27 04:42:01,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:42:01,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91532 states. [2020-10-27 04:42:06,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91532 to 84855. [2020-10-27 04:42:06,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84855 states. [2020-10-27 04:42:07,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84855 states to 84855 states and 113867 transitions. [2020-10-27 04:42:07,153 INFO L78 Accepts]: Start accepts. Automaton has 84855 states and 113867 transitions. Word has length 106 [2020-10-27 04:42:07,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:42:07,154 INFO L481 AbstractCegarLoop]: Abstraction has 84855 states and 113867 transitions. [2020-10-27 04:42:07,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:42:07,154 INFO L276 IsEmpty]: Start isEmpty. Operand 84855 states and 113867 transitions. [2020-10-27 04:42:07,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 04:42:07,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:42:07,193 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] [2020-10-27 04:42:07,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:42:07,193 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:42:07,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:42:07,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1117368527, now seen corresponding path program 1 times [2020-10-27 04:42:07,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:42:07,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134516754] [2020-10-27 04:42:07,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:42:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:07,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:07,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:07,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:07,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:07,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:07,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:12,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:12,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 04:42:12,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:42:12,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 04:42:12,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:12,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:42:12,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 04:42:12,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:42:12,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:12,530 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:42:12,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:42:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:12,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:12,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:12,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:42:12,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:12,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:42:12,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:12,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:12,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:42:12,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:12,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:12,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:42:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:12,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:12,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:12,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:12,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:13,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:13,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 04:42:13,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:42:13,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 782 [2020-10-27 04:42:13,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:13,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:42:13,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:42:13,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:42:13,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:13,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:42:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:13,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:13,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:13,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:42:13,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:13,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:42:13,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:13,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:13,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:42:13,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:13,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:13,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 04:42:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:13,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:13,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:13,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:42:13,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:13,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:42:13,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:13,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:13,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:42:13,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:13,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:13,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 04:42:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:13,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:13,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:13,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:42:13,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:13,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:42:13,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:13,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:13,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:42:13,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:13,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:13,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 04:42:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:13,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:13,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:13,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:42:13,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:13,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:42:13,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:13,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:13,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:42:13,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:13,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:13,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:42:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:13,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:13,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:13,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:42:13,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:13,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:42:13,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:42:13,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:13,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:13,552 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 04:42:13,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134516754] [2020-10-27 04:42:13,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:42:13,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 04:42:13,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402830241] [2020-10-27 04:42:13,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:42:13,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:42:13,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:42:13,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:42:13,554 INFO L87 Difference]: Start difference. First operand 84855 states and 113867 transitions. Second operand 8 states. [2020-10-27 04:42:13,967 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 04:42:14,315 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:42:18,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:42:18,905 INFO L93 Difference]: Finished difference Result 91285 states and 122022 transitions. [2020-10-27 04:42:18,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:42:18,905 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 106 [2020-10-27 04:42:18,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:42:19,080 INFO L225 Difference]: With dead ends: 91285 [2020-10-27 04:42:19,080 INFO L226 Difference]: Without dead ends: 56286 [2020-10-27 04:42:19,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:42:19,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56286 states. [2020-10-27 04:42:22,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56286 to 52250. [2020-10-27 04:42:22,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52250 states. [2020-10-27 04:42:22,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52250 states to 52250 states and 70543 transitions. [2020-10-27 04:42:22,953 INFO L78 Accepts]: Start accepts. Automaton has 52250 states and 70543 transitions. Word has length 106 [2020-10-27 04:42:22,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:42:22,953 INFO L481 AbstractCegarLoop]: Abstraction has 52250 states and 70543 transitions. [2020-10-27 04:42:22,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:42:22,953 INFO L276 IsEmpty]: Start isEmpty. Operand 52250 states and 70543 transitions. [2020-10-27 04:42:22,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 04:42:22,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:42:22,978 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] [2020-10-27 04:42:22,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:42:22,979 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:42:22,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:42:22,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1626088195, now seen corresponding path program 1 times [2020-10-27 04:42:22,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:42:22,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924966939] [2020-10-27 04:42:22,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:42:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:23,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:23,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:23,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking...