/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:36:47,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:36:47,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:36:48,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:36:48,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:36:48,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:36:48,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:36:48,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:36:48,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:36:48,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:36:48,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:36:48,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:36:48,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:36:48,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:36:48,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:36:48,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:36:48,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:36:48,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:36:48,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:36:48,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:36:48,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:36:48,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:36:48,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:36:48,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:36:48,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:36:48,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:36:48,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:36:48,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:36:48,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:36:48,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:36:48,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:36:48,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:36:48,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:36:48,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:36:48,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:36:48,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:36:48,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:36:48,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:36:48,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:36:48,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:36:48,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:36:48,063 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 00:36:48,092 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:36:48,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:36:48,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:36:48,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:36:48,097 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:36:48,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:36:48,097 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:36:48,097 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:36:48,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:36:48,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:36:48,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:36:48,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:36:48,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:36:48,101 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:36:48,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:36:48,101 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:36:48,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:36:48,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:36:48,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:36:48,102 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:36:48,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:36:48,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:36:48,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:36:48,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:36:48,105 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:36:48,105 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:36:48,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:36:48,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:36:48,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:36:48,106 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:36:48,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:36:48,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:36:48,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:36:48,575 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:36:48,576 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:36:48,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 00:36:48,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8114a6cd/48e5473df1b94b0cb614c2ee9129920e/FLAG9d0217926 [2020-10-28 00:36:49,615 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:36:49,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 00:36:49,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8114a6cd/48e5473df1b94b0cb614c2ee9129920e/FLAG9d0217926 [2020-10-28 00:36:49,732 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8114a6cd/48e5473df1b94b0cb614c2ee9129920e [2020-10-28 00:36:49,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:36:49,745 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:36:49,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:36:49,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:36:49,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:36:49,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:36:49" (1/1) ... [2020-10-28 00:36:49,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12e78fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:49, skipping insertion in model container [2020-10-28 00:36:49,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:36:49" (1/1) ... [2020-10-28 00:36:49,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:36:49,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:36:51,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:36:51,445 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:36:52,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:36:52,238 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:36:52,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:52 WrapperNode [2020-10-28 00:36:52,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:36:52,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:36:52,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:36:52,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:36:52,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:52" (1/1) ... [2020-10-28 00:36:52,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:52" (1/1) ... [2020-10-28 00:36:52,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:52" (1/1) ... [2020-10-28 00:36:52,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:52" (1/1) ... [2020-10-28 00:36:52,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:52" (1/1) ... [2020-10-28 00:36:52,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:52" (1/1) ... [2020-10-28 00:36:52,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:52" (1/1) ... [2020-10-28 00:36:52,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:36:52,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:36:52,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:36:52,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:36:52,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:36:52,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:36:52,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:36:52,555 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:36:52,556 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:36:52,556 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:36:52,556 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:36:52,556 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:36:52,556 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:36:52,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:36:52,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:36:52,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 00:36:52,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:36:52,557 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:36:52,557 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:36:52,558 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:36:52,558 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:36:52,558 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:36:52,558 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:36:52,558 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:36:52,559 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 00:36:52,559 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:36:52,559 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:36:52,559 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:36:52,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:36:52,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:36:52,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:36:52,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:36:52,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:36:52,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:36:56,193 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:36:56,193 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:36:56,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:36:56 BoogieIcfgContainer [2020-10-28 00:36:56,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:36:56,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:36:56,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:36:56,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:36:56,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:36:49" (1/3) ... [2020-10-28 00:36:56,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@180e8009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:36:56, skipping insertion in model container [2020-10-28 00:36:56,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:36:52" (2/3) ... [2020-10-28 00:36:56,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@180e8009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:36:56, skipping insertion in model container [2020-10-28 00:36:56,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:36:56" (3/3) ... [2020-10-28 00:36:56,206 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 00:36:56,219 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:36:56,225 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:36:56,240 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:36:56,275 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:36:56,276 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:36:56,276 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:36:56,276 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:36:56,276 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:36:56,276 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:36:56,276 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:36:56,276 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:36:56,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states. [2020-10-28 00:36:56,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-28 00:36:56,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:36:56,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:36:56,364 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:36:56,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:36:56,371 INFO L82 PathProgramCache]: Analyzing trace with hash -864452950, now seen corresponding path program 1 times [2020-10-28 00:36:56,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:36:56,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731503986] [2020-10-28 00:36:56,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:36:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:57,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:57,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:58,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:58,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:59,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:59,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:59,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:59,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:00,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:00,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:00,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:00,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:01,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:01,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:01,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:02,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:02,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-28 00:37:02,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:37:02,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-28 00:37:02,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:02,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:37:02,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 00:37:02,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-28 00:37:02,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:37:03,291 WARN L193 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 00:37:03,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:37:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:03,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:03,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:03,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:37:03,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:37:03,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 00:37:03,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:03,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:37:03,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:37:03,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:37:03,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:03,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:37:03,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731503986] [2020-10-28 00:37:03,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:37:03,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:37:03,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198704649] [2020-10-28 00:37:03,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:37:03,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:37:03,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:37:03,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:37:03,664 INFO L87 Difference]: Start difference. First operand 1001 states. Second operand 4 states. [2020-10-28 00:37:04,704 WARN L193 SmtUtils]: Spent 885.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2020-10-28 00:37:13,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:37:13,772 INFO L93 Difference]: Finished difference Result 1739 states and 3102 transitions. [2020-10-28 00:37:13,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:37:13,776 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 321 [2020-10-28 00:37:13,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:37:13,850 INFO L225 Difference]: With dead ends: 1739 [2020-10-28 00:37:13,850 INFO L226 Difference]: Without dead ends: 1422 [2020-10-28 00:37:13,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:37:13,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2020-10-28 00:37:14,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1419. [2020-10-28 00:37:14,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1419 states. [2020-10-28 00:37:14,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 2186 transitions. [2020-10-28 00:37:14,028 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 2186 transitions. Word has length 321 [2020-10-28 00:37:14,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:37:14,032 INFO L481 AbstractCegarLoop]: Abstraction has 1419 states and 2186 transitions. [2020-10-28 00:37:14,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:37:14,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 2186 transitions. [2020-10-28 00:37:14,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-28 00:37:14,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:37:14,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:37:14,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:37:14,051 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:37:14,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:37:14,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1662929519, now seen corresponding path program 1 times [2020-10-28 00:37:14,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:37:14,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393967490] [2020-10-28 00:37:14,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:37:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:14,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:14,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:14,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:15,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:15,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:15,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:15,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:16,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:16,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:16,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:16,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:16,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:17,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:17,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:17,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:19,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:19,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-28 00:37:19,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:37:19,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-28 00:37:19,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:19,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:37:19,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-28 00:37:19,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 00:37:19,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:37:20,573 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 00:37:20,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:37:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:20,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:20,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:20,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:37:20,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:37:20,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 00:37:20,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:20,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:37:20,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:37:20,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:37:20,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:20,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:37:20,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393967490] [2020-10-28 00:37:20,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:37:20,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:37:20,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600413148] [2020-10-28 00:37:20,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:37:20,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:37:20,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:37:20,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:37:20,872 INFO L87 Difference]: Start difference. First operand 1419 states and 2186 transitions. Second operand 4 states. [2020-10-28 00:37:21,889 WARN L193 SmtUtils]: Spent 945.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2020-10-28 00:37:29,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:37:29,935 INFO L93 Difference]: Finished difference Result 2754 states and 4288 transitions. [2020-10-28 00:37:29,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:37:29,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 321 [2020-10-28 00:37:29,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:37:29,954 INFO L225 Difference]: With dead ends: 2754 [2020-10-28 00:37:29,954 INFO L226 Difference]: Without dead ends: 2388 [2020-10-28 00:37:29,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:37:29,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2020-10-28 00:37:30,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2385. [2020-10-28 00:37:30,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2385 states. [2020-10-28 00:37:30,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2385 states to 2385 states and 3688 transitions. [2020-10-28 00:37:30,069 INFO L78 Accepts]: Start accepts. Automaton has 2385 states and 3688 transitions. Word has length 321 [2020-10-28 00:37:30,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:37:30,070 INFO L481 AbstractCegarLoop]: Abstraction has 2385 states and 3688 transitions. [2020-10-28 00:37:30,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:37:30,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2385 states and 3688 transitions. [2020-10-28 00:37:30,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-28 00:37:30,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:37:30,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:37:30,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:37:30,082 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:37:30,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:37:30,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1652432454, now seen corresponding path program 1 times [2020-10-28 00:37:30,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:37:30,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287010516] [2020-10-28 00:37:30,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:37:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:30,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:30,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:31,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:31,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:31,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:31,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:31,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:32,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:32,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:32,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:32,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:32,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:32,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:32,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:33,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:33,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:35,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:35,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-28 00:37:35,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:37:35,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 00:37:35,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:35,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:37:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:37:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 00:37:35,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:37:36,323 WARN L193 SmtUtils]: Spent 812.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 00:37:36,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:37:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:36,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:36,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:36,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:37:36,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:37:36,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 00:37:36,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:36,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:37:36,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:37:36,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:37:36,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:36,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:37:36,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287010516] [2020-10-28 00:37:36,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:37:36,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:37:36,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957488693] [2020-10-28 00:37:36,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:37:36,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:37:36,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:37:36,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:37:36,716 INFO L87 Difference]: Start difference. First operand 2385 states and 3688 transitions. Second operand 5 states. [2020-10-28 00:37:46,906 WARN L193 SmtUtils]: Spent 917.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:37:49,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:37:49,879 INFO L93 Difference]: Finished difference Result 7032 states and 10855 transitions. [2020-10-28 00:37:49,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:37:49,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 321 [2020-10-28 00:37:49,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:37:49,904 INFO L225 Difference]: With dead ends: 7032 [2020-10-28 00:37:49,904 INFO L226 Difference]: Without dead ends: 4698 [2020-10-28 00:37:49,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:37:49,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4698 states. [2020-10-28 00:37:50,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4698 to 4543. [2020-10-28 00:37:50,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4543 states. [2020-10-28 00:37:50,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4543 states to 4543 states and 7009 transitions. [2020-10-28 00:37:50,148 INFO L78 Accepts]: Start accepts. Automaton has 4543 states and 7009 transitions. Word has length 321 [2020-10-28 00:37:50,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:37:50,149 INFO L481 AbstractCegarLoop]: Abstraction has 4543 states and 7009 transitions. [2020-10-28 00:37:50,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:37:50,149 INFO L276 IsEmpty]: Start isEmpty. Operand 4543 states and 7009 transitions. [2020-10-28 00:37:50,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-28 00:37:50,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:37:50,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:37:50,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:37:50,166 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:37:50,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:37:50,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1314669983, now seen corresponding path program 1 times [2020-10-28 00:37:50,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:37:50,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979178462] [2020-10-28 00:37:50,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:37:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:50,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:50,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:50,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:50,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:51,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:51,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:51,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:51,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:51,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:51,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:51,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:52,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:52,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:52,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:52,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:55,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:55,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-28 00:37:55,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:37:55,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 00:37:55,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:55,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:37:55,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 00:37:55,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 00:37:55,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:56,183 WARN L193 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 00:37:56,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:37:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:56,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:56,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:56,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:37:56,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:37:56,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 00:37:56,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:56,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:37:56,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:37:56,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:37:56,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:56,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:37:56,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979178462] [2020-10-28 00:37:56,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:37:56,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:37:56,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614247727] [2020-10-28 00:37:56,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:37:56,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:37:56,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:37:56,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:37:56,362 INFO L87 Difference]: Start difference. First operand 4543 states and 7009 transitions. Second operand 4 states. [2020-10-28 00:38:09,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:38:09,286 INFO L93 Difference]: Finished difference Result 13584 states and 20955 transitions. [2020-10-28 00:38:09,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 00:38:09,287 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 323 [2020-10-28 00:38:09,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:38:09,331 INFO L225 Difference]: With dead ends: 13584 [2020-10-28 00:38:09,331 INFO L226 Difference]: Without dead ends: 9061 [2020-10-28 00:38:09,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:38:09,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9061 states. [2020-10-28 00:38:09,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9061 to 4553. [2020-10-28 00:38:09,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4553 states. [2020-10-28 00:38:09,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4553 states to 4553 states and 7022 transitions. [2020-10-28 00:38:09,644 INFO L78 Accepts]: Start accepts. Automaton has 4553 states and 7022 transitions. Word has length 323 [2020-10-28 00:38:09,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:38:09,645 INFO L481 AbstractCegarLoop]: Abstraction has 4553 states and 7022 transitions. [2020-10-28 00:38:09,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:38:09,645 INFO L276 IsEmpty]: Start isEmpty. Operand 4553 states and 7022 transitions. [2020-10-28 00:38:09,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-28 00:38:09,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:38:09,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:38:09,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:38:09,658 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:38:09,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:38:09,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1316212678, now seen corresponding path program 1 times [2020-10-28 00:38:09,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:38:09,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976977998] [2020-10-28 00:38:09,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:38:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:09,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:09,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:09,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:10,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:10,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:10,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:10,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:10,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:10,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:10,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:11,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:11,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:11,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:11,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:11,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:14,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:14,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-28 00:38:14,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:38:14,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 00:38:14,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:14,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:38:14,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 00:38:14,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 00:38:14,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:15,715 WARN L193 SmtUtils]: Spent 850.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 00:38:15,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:38:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:15,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:15,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:15,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:38:15,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:38:15,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 00:38:15,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:15,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:38:15,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:38:15,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:38:15,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:15,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:38:15,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976977998] [2020-10-28 00:38:15,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:38:15,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:38:15,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033919067] [2020-10-28 00:38:15,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:38:15,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:38:15,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:38:15,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:38:15,961 INFO L87 Difference]: Start difference. First operand 4553 states and 7022 transitions. Second operand 4 states. [2020-10-28 00:38:26,515 WARN L193 SmtUtils]: Spent 891.00 ms on a formula simplification that was a NOOP. DAG size: 357 [2020-10-28 00:38:29,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:38:29,307 INFO L93 Difference]: Finished difference Result 13342 states and 20529 transitions. [2020-10-28 00:38:29,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:38:29,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 323 [2020-10-28 00:38:29,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:38:29,348 INFO L225 Difference]: With dead ends: 13342 [2020-10-28 00:38:29,348 INFO L226 Difference]: Without dead ends: 8928 [2020-10-28 00:38:29,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:38:29,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8928 states. [2020-10-28 00:38:29,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8928 to 8773. [2020-10-28 00:38:29,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8773 states. [2020-10-28 00:38:29,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8773 states to 8773 states and 13470 transitions. [2020-10-28 00:38:29,861 INFO L78 Accepts]: Start accepts. Automaton has 8773 states and 13470 transitions. Word has length 323 [2020-10-28 00:38:29,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:38:29,861 INFO L481 AbstractCegarLoop]: Abstraction has 8773 states and 13470 transitions. [2020-10-28 00:38:29,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:38:29,862 INFO L276 IsEmpty]: Start isEmpty. Operand 8773 states and 13470 transitions. [2020-10-28 00:38:29,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-28 00:38:29,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:38:29,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:38:29,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:38:29,883 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:38:29,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:38:29,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1176234883, now seen corresponding path program 1 times [2020-10-28 00:38:29,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:38:29,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740533582] [2020-10-28 00:38:29,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:38:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:29,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:30,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:30,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:30,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:30,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:30,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:30,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:30,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:30,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:30,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:30,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:31,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:31,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:31,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:34,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:34,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-28 00:38:34,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:38:34,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-28 00:38:34,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:34,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:38:34,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 00:38:34,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-28 00:38:34,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:35,982 WARN L193 SmtUtils]: Spent 912.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 00:38:35,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:38:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:35,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:36,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:36,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:38:36,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:38:36,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:38:36,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:36,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:38:36,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:38:36,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:38:36,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:36,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:38:36,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740533582] [2020-10-28 00:38:36,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:38:36,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:38:36,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646012800] [2020-10-28 00:38:36,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:38:36,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:38:36,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:38:36,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:38:36,257 INFO L87 Difference]: Start difference. First operand 8773 states and 13470 transitions. Second operand 4 states. [2020-10-28 00:38:47,420 WARN L193 SmtUtils]: Spent 904.00 ms on a formula simplification that was a NOOP. DAG size: 357 [2020-10-28 00:38:50,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:38:50,298 INFO L93 Difference]: Finished difference Result 25678 states and 39315 transitions. [2020-10-28 00:38:50,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:38:50,301 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-10-28 00:38:50,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:38:50,341 INFO L225 Difference]: With dead ends: 25678 [2020-10-28 00:38:50,342 INFO L226 Difference]: Without dead ends: 17127 [2020-10-28 00:38:50,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:38:50,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17127 states. [2020-10-28 00:38:51,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17127 to 16972. [2020-10-28 00:38:51,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16972 states. [2020-10-28 00:38:51,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16972 states to 16972 states and 25896 transitions. [2020-10-28 00:38:51,545 INFO L78 Accepts]: Start accepts. Automaton has 16972 states and 25896 transitions. Word has length 324 [2020-10-28 00:38:51,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:38:51,546 INFO L481 AbstractCegarLoop]: Abstraction has 16972 states and 25896 transitions. [2020-10-28 00:38:51,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:38:51,546 INFO L276 IsEmpty]: Start isEmpty. Operand 16972 states and 25896 transitions. [2020-10-28 00:38:51,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-28 00:38:51,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:38:51,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:38:51,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:38:51,580 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:38:51,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:38:51,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1483665862, now seen corresponding path program 1 times [2020-10-28 00:38:51,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:38:51,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671648107] [2020-10-28 00:38:51,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:38:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:51,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:51,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:51,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:52,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:52,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:52,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:52,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:52,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:52,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:52,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:52,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:52,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:53,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:53,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:53,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:53,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:53,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:56,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:56,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-28 00:38:56,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 00:38:56,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 00:38:56,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:38:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 00:38:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 00:38:56,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:57,659 WARN L193 SmtUtils]: Spent 866.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 00:38:57,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:38:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:57,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:57,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:57,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:38:57,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:38:57,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:38:57,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:57,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:38:57,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:38:57,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:38:57,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:57,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:38:57,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671648107] [2020-10-28 00:38:57,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:38:57,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:38:57,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524458582] [2020-10-28 00:38:57,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:38:57,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:38:57,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:38:57,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:38:57,779 INFO L87 Difference]: Start difference. First operand 16972 states and 25896 transitions. Second operand 5 states. [2020-10-28 00:39:09,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:39:09,754 INFO L93 Difference]: Finished difference Result 48129 states and 73223 transitions. [2020-10-28 00:39:09,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:39:09,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-10-28 00:39:09,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:39:09,820 INFO L225 Difference]: With dead ends: 48129 [2020-10-28 00:39:09,820 INFO L226 Difference]: Without dead ends: 31666 [2020-10-28 00:39:09,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:39:09,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31666 states. [2020-10-28 00:39:11,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31666 to 17205. [2020-10-28 00:39:11,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17205 states. [2020-10-28 00:39:11,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17205 states to 17205 states and 26282 transitions. [2020-10-28 00:39:11,316 INFO L78 Accepts]: Start accepts. Automaton has 17205 states and 26282 transitions. Word has length 324 [2020-10-28 00:39:11,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:39:11,316 INFO L481 AbstractCegarLoop]: Abstraction has 17205 states and 26282 transitions. [2020-10-28 00:39:11,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:39:11,316 INFO L276 IsEmpty]: Start isEmpty. Operand 17205 states and 26282 transitions. [2020-10-28 00:39:11,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-28 00:39:11,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:39:11,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:39:11,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:39:11,348 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:39:11,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:39:11,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1737555589, now seen corresponding path program 1 times [2020-10-28 00:39:11,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:39:11,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839610404] [2020-10-28 00:39:11,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:39:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:39:11,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:11,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:11,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:11,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:11,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:11,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:12,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:12,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:12,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:12,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:12,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:12,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:12,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:12,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:12,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:13,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:16,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:39:16,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-28 00:39:16,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:39:16,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 00:39:16,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:39:16,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:39:16,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 00:39:16,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 00:39:16,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:39:17,369 WARN L193 SmtUtils]: Spent 895.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 00:39:17,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:39:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:39:17,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:17,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:39:17,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:39:17,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:39:17,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 00:39:17,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:39:17,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:39:17,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:39:17,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:39:17,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:39:17,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:39:17,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839610404] [2020-10-28 00:39:17,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:39:17,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:39:17,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816016884] [2020-10-28 00:39:17,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:39:17,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:39:17,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:39:17,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:39:17,511 INFO L87 Difference]: Start difference. First operand 17205 states and 26282 transitions. Second operand 4 states. [2020-10-28 00:39:31,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:39:31,190 INFO L93 Difference]: Finished difference Result 50117 states and 76228 transitions. [2020-10-28 00:39:31,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 00:39:31,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-10-28 00:39:31,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:39:31,238 INFO L225 Difference]: With dead ends: 50117 [2020-10-28 00:39:31,239 INFO L226 Difference]: Without dead ends: 33667 [2020-10-28 00:39:31,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:39:31,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33667 states. [2020-10-28 00:39:32,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33667 to 17302. [2020-10-28 00:39:32,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17302 states. [2020-10-28 00:39:32,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17302 states to 17302 states and 26408 transitions. [2020-10-28 00:39:32,575 INFO L78 Accepts]: Start accepts. Automaton has 17302 states and 26408 transitions. Word has length 326 [2020-10-28 00:39:32,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:39:32,575 INFO L481 AbstractCegarLoop]: Abstraction has 17302 states and 26408 transitions. [2020-10-28 00:39:32,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:39:32,575 INFO L276 IsEmpty]: Start isEmpty. Operand 17302 states and 26408 transitions. [2020-10-28 00:39:32,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-28 00:39:32,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:39:32,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:39:32,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:39:32,600 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:39:32,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:39:32,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1395088599, now seen corresponding path program 1 times [2020-10-28 00:39:32,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:39:32,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111397205] [2020-10-28 00:39:32,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:39:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:39:32,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:32,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:32,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:33,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:33,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:33,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:33,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:34,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:34,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:34,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:34,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:34,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:34,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:34,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:37,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:37,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:39:37,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-28 00:39:37,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:39:37,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-28 00:39:37,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:39:37,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:39:37,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-28 00:39:37,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 00:39:37,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:39:38,760 WARN L193 SmtUtils]: Spent 992.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 00:39:38,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:39:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:39:38,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:38,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:39:38,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:39:38,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:39:38,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:39:38,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:39:38,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:39:38,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:39:38,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:39:38,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:39:38,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:39:38,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111397205] [2020-10-28 00:39:38,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:39:38,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:39:38,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67489459] [2020-10-28 00:39:38,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:39:38,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:39:38,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:39:38,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:39:38,868 INFO L87 Difference]: Start difference. First operand 17302 states and 26408 transitions. Second operand 4 states. [2020-10-28 00:39:49,057 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 357 [2020-10-28 00:39:49,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:39:49,413 INFO L93 Difference]: Finished difference Result 39604 states and 60966 transitions. [2020-10-28 00:39:49,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:39:49,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-10-28 00:39:49,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:39:49,447 INFO L225 Difference]: With dead ends: 39604 [2020-10-28 00:39:49,447 INFO L226 Difference]: Without dead ends: 24121 [2020-10-28 00:39:49,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:39:49,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24121 states. [2020-10-28 00:39:50,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24121 to 21270. [2020-10-28 00:39:50,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21270 states. [2020-10-28 00:39:50,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21270 states to 21270 states and 32964 transitions. [2020-10-28 00:39:50,917 INFO L78 Accepts]: Start accepts. Automaton has 21270 states and 32964 transitions. Word has length 326 [2020-10-28 00:39:50,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:39:50,917 INFO L481 AbstractCegarLoop]: Abstraction has 21270 states and 32964 transitions. [2020-10-28 00:39:50,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:39:50,917 INFO L276 IsEmpty]: Start isEmpty. Operand 21270 states and 32964 transitions. [2020-10-28 00:39:50,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-28 00:39:50,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:39:50,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:39:50,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:39:50,938 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:39:50,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:39:50,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1122756934, now seen corresponding path program 1 times [2020-10-28 00:39:50,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:39:50,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715984367] [2020-10-28 00:39:50,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:39:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:39:50,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:51,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:51,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:51,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:51,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:51,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:51,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:51,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:51,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:51,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:51,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:51,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:51,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:52,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:52,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:53,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:53,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:54,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:55,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:39:55,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-28 00:39:55,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 00:39:55,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 00:39:55,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:39:55,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:39:55,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 00:39:55,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 00:39:55,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:39:57,034 WARN L193 SmtUtils]: Spent 910.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 00:39:57,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:39:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:39:57,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:39:57,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:39:57,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:39:57,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:39:57,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:39:57,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:39:57,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:39:57,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:39:57,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:39:57,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:39:57,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:39:57,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715984367] [2020-10-28 00:39:57,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:39:57,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:39:57,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764651577] [2020-10-28 00:39:57,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:39:57,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:39:57,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:39:57,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:39:57,158 INFO L87 Difference]: Start difference. First operand 21270 states and 32964 transitions. Second operand 5 states. [2020-10-28 00:40:05,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:40:05,290 INFO L93 Difference]: Finished difference Result 39321 states and 60782 transitions. [2020-10-28 00:40:05,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:40:05,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 327 [2020-10-28 00:40:05,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:40:05,312 INFO L225 Difference]: With dead ends: 39321 [2020-10-28 00:40:05,313 INFO L226 Difference]: Without dead ends: 18799 [2020-10-28 00:40:05,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:40:05,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18799 states. [2020-10-28 00:40:06,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18799 to 18785. [2020-10-28 00:40:06,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18785 states. [2020-10-28 00:40:06,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18785 states to 18785 states and 29086 transitions. [2020-10-28 00:40:06,351 INFO L78 Accepts]: Start accepts. Automaton has 18785 states and 29086 transitions. Word has length 327 [2020-10-28 00:40:06,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:40:06,352 INFO L481 AbstractCegarLoop]: Abstraction has 18785 states and 29086 transitions. [2020-10-28 00:40:06,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:40:06,352 INFO L276 IsEmpty]: Start isEmpty. Operand 18785 states and 29086 transitions. [2020-10-28 00:40:06,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-28 00:40:06,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:40:06,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:40:06,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:40:06,363 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:40:06,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:40:06,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1780174400, now seen corresponding path program 1 times [2020-10-28 00:40:06,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:40:06,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322835291] [2020-10-28 00:40:06,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:40:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:40:06,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:06,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:06,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:06,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:07,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:07,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:07,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:07,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:07,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:07,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:07,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:07,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:07,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:07,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:07,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:11,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:40:11,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-28 00:40:11,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:40:11,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 00:40:11,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:40:11,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:40:11,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-28 00:40:11,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 00:40:11,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:40:12,439 WARN L193 SmtUtils]: Spent 932.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-28 00:40:12,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:40:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:40:12,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:40:12,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:40:12,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:40:12,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:40:12,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:40:12,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:40:12,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:40:12,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:40:12,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:40:12,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:40:12,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:40:12,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322835291] [2020-10-28 00:40:12,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:40:12,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:40:12,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838521714] [2020-10-28 00:40:12,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:40:12,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:40:12,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:40:12,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:40:12,555 INFO L87 Difference]: Start difference. First operand 18785 states and 29086 transitions. Second operand 4 states. [2020-10-28 00:40:22,725 WARN L193 SmtUtils]: Spent 981.00 ms on a formula simplification that was a NOOP. DAG size: 357 [2020-10-28 00:40:23,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:40:23,929 INFO L93 Difference]: Finished difference Result 46140 states and 71949 transitions. [2020-10-28 00:40:23,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:40:23,930 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 329 [2020-10-28 00:40:23,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:40:23,965 INFO L225 Difference]: With dead ends: 46140 [2020-10-28 00:40:23,965 INFO L226 Difference]: Without dead ends: 29236 [2020-10-28 00:40:23,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:40:24,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29236 states.