/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_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:22:13,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:22:13,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:22:13,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:22:13,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:22:13,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:22:13,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:22:13,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:22:13,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:22:13,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:22:13,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:22:13,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:22:13,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:22:13,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:22:13,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:22:13,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:22:13,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:22:13,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:22:13,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:22:13,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:22:13,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:22:13,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:22:13,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:22:13,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:22:13,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:22:13,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:22:13,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:22:13,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:22:13,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:22:13,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:22:13,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:22:13,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:22:13,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:22:13,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:22:13,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:22:13,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:22:13,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:22:13,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:22:13,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:22:13,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:22:13,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:22:13,221 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 00:22:13,246 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:22:13,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:22:13,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:22:13,249 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:22:13,249 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:22:13,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:22:13,249 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:22:13,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:22:13,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:22:13,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:22:13,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:22:13,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:22:13,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:22:13,251 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:22:13,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:22:13,251 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:22:13,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:22:13,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:22:13,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:22:13,252 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:22:13,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:22:13,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:22:13,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:22:13,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:22:13,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:22:13,253 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:22:13,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:22:13,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:22:13,254 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:22:13,254 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:22:13,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:22:13,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:22:13,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:22:13,688 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:22:13,688 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:22:13,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-28 00:22:13,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c35528c0b/754c5e49cf8f41a585203a595f0d42a1/FLAGc087a8002 [2020-10-28 00:22:14,572 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:22:14,573 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-28 00:22:14,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c35528c0b/754c5e49cf8f41a585203a595f0d42a1/FLAGc087a8002 [2020-10-28 00:22:14,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c35528c0b/754c5e49cf8f41a585203a595f0d42a1 [2020-10-28 00:22:14,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:22:14,812 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:22:14,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:22:14,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:22:14,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:22:14,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:22:14" (1/1) ... [2020-10-28 00:22:14,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca0bb4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:14, skipping insertion in model container [2020-10-28 00:22:14,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:22:14" (1/1) ... [2020-10-28 00:22:14,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:22:14,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:22:15,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:22:15,506 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:22:15,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:22:15,734 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:22:15,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:15 WrapperNode [2020-10-28 00:22:15,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:22:15,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:22:15,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:22:15,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:22:15,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:15" (1/1) ... [2020-10-28 00:22:15,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:15" (1/1) ... [2020-10-28 00:22:15,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:15" (1/1) ... [2020-10-28 00:22:15,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:15" (1/1) ... [2020-10-28 00:22:15,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:15" (1/1) ... [2020-10-28 00:22:15,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:15" (1/1) ... [2020-10-28 00:22:15,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:15" (1/1) ... [2020-10-28 00:22:15,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:22:15,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:22:15,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:22:15,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:22:15,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:15" (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 00:22:15,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:22:15,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:22:15,963 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:22:15,963 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:22:15,963 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:22:15,963 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:22:15,964 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:22:15,964 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:22:15,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:22:15,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:22:15,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:22:15,964 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:22:15,965 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:22:15,965 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:22:15,965 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:22:15,965 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:22:15,965 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:22:15,965 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:22:15,966 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 00:22:15,966 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 00:22:15,966 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-28 00:22:15,966 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:22:15,966 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:22:15,966 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:22:15,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:22:15,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:22:15,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:22:15,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:22:15,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:22:15,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:22:17,536 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:22:17,536 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:22:17,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:22:17 BoogieIcfgContainer [2020-10-28 00:22:17,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:22:17,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:22:17,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:22:17,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:22:17,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:22:14" (1/3) ... [2020-10-28 00:22:17,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568acdd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:22:17, skipping insertion in model container [2020-10-28 00:22:17,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:22:15" (2/3) ... [2020-10-28 00:22:17,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568acdd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:22:17, skipping insertion in model container [2020-10-28 00:22:17,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:22:17" (3/3) ... [2020-10-28 00:22:17,548 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-28 00:22:17,560 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:22:17,565 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:22:17,579 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:22:17,609 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:22:17,609 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:22:17,610 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:22:17,610 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:22:17,610 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:22:17,610 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:22:17,610 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:22:17,610 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:22:17,638 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states. [2020-10-28 00:22:17,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 00:22:17,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:22:17,659 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] [2020-10-28 00:22:17,659 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:22:17,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:22:17,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1168853078, now seen corresponding path program 1 times [2020-10-28 00:22:17,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:22:17,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273508035] [2020-10-28 00:22:17,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:22:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:18,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:18,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:18,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:18,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:19,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:19,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:19,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:19,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:20,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:22,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:22,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:22,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:22,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 00:22:22,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:22:22,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-28 00:22:22,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:22,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:22:22,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 00:22:23,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:22:23,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:22:23,528 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:22:23,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:22:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:23,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:23,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:23,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:22:23,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:22:23,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 00:22:23,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:23,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:22:23,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:22:23,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:22:23,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:23,639 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 00:22:23,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273508035] [2020-10-28 00:22:23,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:22:23,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:22:23,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310964713] [2020-10-28 00:22:23,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:22:23,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:22:23,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:22:23,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:22:23,667 INFO L87 Difference]: Start difference. First operand 496 states. Second operand 5 states. [2020-10-28 00:22:26,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:22:26,298 INFO L93 Difference]: Finished difference Result 726 states and 1176 transitions. [2020-10-28 00:22:26,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:22:26,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-28 00:22:26,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:22:26,324 INFO L225 Difference]: With dead ends: 726 [2020-10-28 00:22:26,324 INFO L226 Difference]: Without dead ends: 489 [2020-10-28 00:22:26,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:22:26,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2020-10-28 00:22:26,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2020-10-28 00:22:26,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-10-28 00:22:26,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 792 transitions. [2020-10-28 00:22:26,421 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 792 transitions. Word has length 124 [2020-10-28 00:22:26,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:22:26,423 INFO L481 AbstractCegarLoop]: Abstraction has 489 states and 792 transitions. [2020-10-28 00:22:26,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:22:26,423 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 792 transitions. [2020-10-28 00:22:26,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-28 00:22:26,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:22:26,438 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] [2020-10-28 00:22:26,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:22:26,439 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:22:26,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:22:26,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1849458767, now seen corresponding path program 1 times [2020-10-28 00:22:26,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:22:26,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876271687] [2020-10-28 00:22:26,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:22:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:26,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:26,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:26,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:26,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:26,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:26,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:26,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:27,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:27,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:28,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:28,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:31,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:31,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 00:22:31,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:22:31,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 00:22:31,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:31,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:22:31,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 00:22:31,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 00:22:31,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:31,953 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:22:31,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:22:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:31,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:31,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:31,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:22:31,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:22:31,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:22:31,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:31,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:22:31,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:22:31,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:22:31,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:32,029 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 00:22:32,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876271687] [2020-10-28 00:22:32,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:22:32,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:22:32,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326056264] [2020-10-28 00:22:32,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:22:32,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:22:32,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:22:32,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:22:32,035 INFO L87 Difference]: Start difference. First operand 489 states and 792 transitions. Second operand 4 states. [2020-10-28 00:22:32,423 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-28 00:22:35,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:22:35,447 INFO L93 Difference]: Finished difference Result 917 states and 1469 transitions. [2020-10-28 00:22:35,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:22:35,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2020-10-28 00:22:35,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:22:35,454 INFO L225 Difference]: With dead ends: 917 [2020-10-28 00:22:35,455 INFO L226 Difference]: Without dead ends: 802 [2020-10-28 00:22:35,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:22:35,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2020-10-28 00:22:35,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 692. [2020-10-28 00:22:35,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-28 00:22:35,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1114 transitions. [2020-10-28 00:22:35,513 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1114 transitions. Word has length 125 [2020-10-28 00:22:35,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:22:35,514 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1114 transitions. [2020-10-28 00:22:35,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:22:35,514 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1114 transitions. [2020-10-28 00:22:35,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-28 00:22:35,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:22:35,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:22:35,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:22:35,518 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:22:35,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:22:35,519 INFO L82 PathProgramCache]: Analyzing trace with hash 582921854, now seen corresponding path program 1 times [2020-10-28 00:22:35,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:22:35,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438421200] [2020-10-28 00:22:35,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:22:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:35,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:35,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:35,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:35,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:35,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:35,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:36,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:36,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:36,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:36,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:38,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:38,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:40,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:40,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-28 00:22:40,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:22:40,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 00:22:40,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:40,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:22:40,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-28 00:22:40,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 00:22:40,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:41,049 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:22:41,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:22:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:41,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:41,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:41,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:22:41,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:22:41,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:22:41,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:41,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:22:41,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:22:41,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:22:41,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:41,134 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 00:22:41,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438421200] [2020-10-28 00:22:41,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:22:41,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:22:41,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743280494] [2020-10-28 00:22:41,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:22:41,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:22:41,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:22:41,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:22:41,139 INFO L87 Difference]: Start difference. First operand 692 states and 1114 transitions. Second operand 4 states. [2020-10-28 00:22:41,606 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-28 00:22:44,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:22:44,391 INFO L93 Difference]: Finished difference Result 1751 states and 2793 transitions. [2020-10-28 00:22:44,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:22:44,391 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-28 00:22:44,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:22:44,399 INFO L225 Difference]: With dead ends: 1751 [2020-10-28 00:22:44,400 INFO L226 Difference]: Without dead ends: 1261 [2020-10-28 00:22:44,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:22:44,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2020-10-28 00:22:44,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1203. [2020-10-28 00:22:44,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-10-28 00:22:44,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1922 transitions. [2020-10-28 00:22:44,477 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1922 transitions. Word has length 127 [2020-10-28 00:22:44,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:22:44,477 INFO L481 AbstractCegarLoop]: Abstraction has 1203 states and 1922 transitions. [2020-10-28 00:22:44,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:22:44,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1922 transitions. [2020-10-28 00:22:44,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-28 00:22:44,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:22:44,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:22:44,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:22:44,483 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:22:44,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:22:44,484 INFO L82 PathProgramCache]: Analyzing trace with hash 913286090, now seen corresponding path program 1 times [2020-10-28 00:22:44,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:22:44,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041287884] [2020-10-28 00:22:44,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:22:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:44,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:44,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:44,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:44,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:44,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:44,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:44,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:45,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:45,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:46,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:49,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:49,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 00:22:49,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 00:22:49,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 00:22:49,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:49,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:22:49,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-28 00:22:49,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 00:22:49,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:22:50,070 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:22:50,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:22:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:50,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:50,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:50,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:22:50,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:22:50,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 00:22:50,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:50,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:22:50,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:22:50,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:22:50,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:50,150 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 00:22:50,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041287884] [2020-10-28 00:22:50,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:22:50,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:22:50,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183700774] [2020-10-28 00:22:50,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:22:50,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:22:50,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:22:50,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:22:50,153 INFO L87 Difference]: Start difference. First operand 1203 states and 1922 transitions. Second operand 4 states. [2020-10-28 00:22:50,556 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 00:22:53,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:22:53,970 INFO L93 Difference]: Finished difference Result 3210 states and 5099 transitions. [2020-10-28 00:22:53,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:22:53,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-28 00:22:53,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:22:53,982 INFO L225 Difference]: With dead ends: 3210 [2020-10-28 00:22:53,983 INFO L226 Difference]: Without dead ends: 2167 [2020-10-28 00:22:53,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:22:53,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2020-10-28 00:22:54,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 2164. [2020-10-28 00:22:54,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2164 states. [2020-10-28 00:22:54,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2164 states to 2164 states and 3430 transitions. [2020-10-28 00:22:54,106 INFO L78 Accepts]: Start accepts. Automaton has 2164 states and 3430 transitions. Word has length 129 [2020-10-28 00:22:54,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:22:54,107 INFO L481 AbstractCegarLoop]: Abstraction has 2164 states and 3430 transitions. [2020-10-28 00:22:54,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:22:54,107 INFO L276 IsEmpty]: Start isEmpty. Operand 2164 states and 3430 transitions. [2020-10-28 00:22:54,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-28 00:22:54,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:22:54,114 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] [2020-10-28 00:22:54,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:22:54,115 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:22:54,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:22:54,115 INFO L82 PathProgramCache]: Analyzing trace with hash -849716159, now seen corresponding path program 1 times [2020-10-28 00:22:54,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:22:54,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038945847] [2020-10-28 00:22:54,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:22:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:54,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:54,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:54,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:54,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:54,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:54,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:54,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:54,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:55,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:57,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:59,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:59,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 00:22:59,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 00:22:59,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 00:22:59,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:59,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:22:59,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 00:22:59,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 00:22:59,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:59,626 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:22:59,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:22:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:59,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:59,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:59,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:22:59,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:22:59,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:22:59,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:59,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:22:59,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:22:59,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:22:59,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:59,693 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 00:22:59,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038945847] [2020-10-28 00:22:59,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:22:59,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:22:59,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837011747] [2020-10-28 00:22:59,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:22:59,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:22:59,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:22:59,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:22:59,696 INFO L87 Difference]: Start difference. First operand 2164 states and 3430 transitions. Second operand 4 states. [2020-10-28 00:23:00,138 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 00:23:02,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:23:02,812 INFO L93 Difference]: Finished difference Result 5374 states and 8466 transitions. [2020-10-28 00:23:02,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:23:02,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-28 00:23:02,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:23:02,834 INFO L225 Difference]: With dead ends: 5374 [2020-10-28 00:23:02,834 INFO L226 Difference]: Without dead ends: 3895 [2020-10-28 00:23:02,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:23:02,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3895 states. [2020-10-28 00:23:03,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3895 to 3672. [2020-10-28 00:23:03,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3672 states. [2020-10-28 00:23:03,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 5774 transitions. [2020-10-28 00:23:03,027 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 5774 transitions. Word has length 131 [2020-10-28 00:23:03,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:23:03,028 INFO L481 AbstractCegarLoop]: Abstraction has 3672 states and 5774 transitions. [2020-10-28 00:23:03,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:23:03,028 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 5774 transitions. [2020-10-28 00:23:03,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-28 00:23:03,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:23:03,039 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] [2020-10-28 00:23:03,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:23:03,040 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:23:03,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:23:03,040 INFO L82 PathProgramCache]: Analyzing trace with hash -74205257, now seen corresponding path program 1 times [2020-10-28 00:23:03,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:23:03,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146875647] [2020-10-28 00:23:03,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:23:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:03,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:03,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:03,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:03,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:03,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:03,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:03,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:03,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:06,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:06,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:07,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:08,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:08,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 00:23:08,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:23:08,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 00:23:08,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:08,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:23:08,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-28 00:23:08,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 00:23:08,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:08,581 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:23:08,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:23:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:08,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:08,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:08,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:23:08,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:23:08,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 00:23:08,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:08,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:23:08,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:23:08,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:23:08,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:08,662 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 00:23:08,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146875647] [2020-10-28 00:23:08,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:23:08,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:23:08,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399804153] [2020-10-28 00:23:08,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:23:08,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:23:08,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:23:08,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:23:08,665 INFO L87 Difference]: Start difference. First operand 3672 states and 5774 transitions. Second operand 4 states. [2020-10-28 00:23:09,097 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-28 00:23:12,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:23:12,753 INFO L93 Difference]: Finished difference Result 10114 states and 15826 transitions. [2020-10-28 00:23:12,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:23:12,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-10-28 00:23:12,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:23:12,791 INFO L225 Difference]: With dead ends: 10114 [2020-10-28 00:23:12,791 INFO L226 Difference]: Without dead ends: 7031 [2020-10-28 00:23:12,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:23:12,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7031 states. [2020-10-28 00:23:13,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7031 to 6588. [2020-10-28 00:23:13,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6588 states. [2020-10-28 00:23:13,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6588 states to 6588 states and 10274 transitions. [2020-10-28 00:23:13,163 INFO L78 Accepts]: Start accepts. Automaton has 6588 states and 10274 transitions. Word has length 133 [2020-10-28 00:23:13,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:23:13,164 INFO L481 AbstractCegarLoop]: Abstraction has 6588 states and 10274 transitions. [2020-10-28 00:23:13,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:23:13,164 INFO L276 IsEmpty]: Start isEmpty. Operand 6588 states and 10274 transitions. [2020-10-28 00:23:13,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-28 00:23:13,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:23:13,184 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] [2020-10-28 00:23:13,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:23:13,185 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:23:13,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:23:13,187 INFO L82 PathProgramCache]: Analyzing trace with hash 883583982, now seen corresponding path program 1 times [2020-10-28 00:23:13,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:23:13,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405135052] [2020-10-28 00:23:13,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:23:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:13,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:13,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:13,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:13,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:13,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:13,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:13,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:13,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:14,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:18,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:18,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 00:23:18,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 00:23:18,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 00:23:18,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:18,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:23:18,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-28 00:23:18,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 00:23:18,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:18,753 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:23:18,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:23:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:18,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:18,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:18,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:23:18,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:23:18,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:23:18,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:18,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:23:18,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:23:18,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:23:18,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:18,839 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 00:23:18,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405135052] [2020-10-28 00:23:18,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:23:18,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:23:18,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483886048] [2020-10-28 00:23:18,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:23:18,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:23:18,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:23:18,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:23:18,842 INFO L87 Difference]: Start difference. First operand 6588 states and 10274 transitions. Second operand 4 states. [2020-10-28 00:23:23,124 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 00:23:23,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:23:23,135 INFO L93 Difference]: Finished difference Result 10762 states and 16754 transitions. [2020-10-28 00:23:23,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:23:23,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-10-28 00:23:23,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:23:23,167 INFO L225 Difference]: With dead ends: 10762 [2020-10-28 00:23:23,167 INFO L226 Difference]: Without dead ends: 6591 [2020-10-28 00:23:23,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:23:23,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6591 states. [2020-10-28 00:23:23,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6591 to 6588. [2020-10-28 00:23:23,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6588 states. [2020-10-28 00:23:23,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6588 states to 6588 states and 10234 transitions. [2020-10-28 00:23:23,531 INFO L78 Accepts]: Start accepts. Automaton has 6588 states and 10234 transitions. Word has length 135 [2020-10-28 00:23:23,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:23:23,531 INFO L481 AbstractCegarLoop]: Abstraction has 6588 states and 10234 transitions. [2020-10-28 00:23:23,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:23:23,532 INFO L276 IsEmpty]: Start isEmpty. Operand 6588 states and 10234 transitions. [2020-10-28 00:23:23,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-28 00:23:23,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:23:23,550 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] [2020-10-28 00:23:23,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:23:23,550 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:23:23,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:23:23,551 INFO L82 PathProgramCache]: Analyzing trace with hash 2113181275, now seen corresponding path program 1 times [2020-10-28 00:23:23,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:23:23,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428057200] [2020-10-28 00:23:23,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:23:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:23,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:23,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:23,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:23,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:23,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:23,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:24,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:24,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:27,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:28,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:28,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 00:23:28,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 00:23:28,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 00:23:28,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:28,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:23:28,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-28 00:23:28,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 00:23:28,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:29,102 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:23:29,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:23:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:29,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:29,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:29,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:23:29,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:23:29,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 00:23:29,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:29,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:23:29,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:23:29,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:23:29,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:29,188 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 00:23:29,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428057200] [2020-10-28 00:23:29,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:23:29,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:23:29,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963594226] [2020-10-28 00:23:29,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:23:29,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:23:29,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:23:29,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:23:29,198 INFO L87 Difference]: Start difference. First operand 6588 states and 10234 transitions. Second operand 4 states. [2020-10-28 00:23:29,710 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-28 00:23:32,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:23:32,937 INFO L93 Difference]: Finished difference Result 17650 states and 27250 transitions. [2020-10-28 00:23:32,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:23:32,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-10-28 00:23:32,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:23:32,990 INFO L225 Difference]: With dead ends: 17650 [2020-10-28 00:23:32,990 INFO L226 Difference]: Without dead ends: 12447 [2020-10-28 00:23:33,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:23:33,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12447 states. [2020-10-28 00:23:33,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12447 to 11564. [2020-10-28 00:23:33,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11564 states. [2020-10-28 00:23:33,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11564 states to 11564 states and 17766 transitions. [2020-10-28 00:23:33,693 INFO L78 Accepts]: Start accepts. Automaton has 11564 states and 17766 transitions. Word has length 135 [2020-10-28 00:23:33,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:23:33,694 INFO L481 AbstractCegarLoop]: Abstraction has 11564 states and 17766 transitions. [2020-10-28 00:23:33,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:23:33,694 INFO L276 IsEmpty]: Start isEmpty. Operand 11564 states and 17766 transitions. [2020-10-28 00:23:33,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-28 00:23:33,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:23:33,725 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] [2020-10-28 00:23:33,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:23:33,725 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:23:33,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:23:33,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1146214831, now seen corresponding path program 1 times [2020-10-28 00:23:33,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:23:33,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002871070] [2020-10-28 00:23:33,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:23:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:33,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:33,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:33,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:33,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:34,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:34,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:35,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:35,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:38,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:38,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 00:23:38,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:23:38,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 00:23:38,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:38,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:23:38,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-28 00:23:38,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:23:38,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:39,227 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:23:39,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:23:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:39,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:39,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:39,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:23:39,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:23:39,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 00:23:39,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:39,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:23:39,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:23:39,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:23:39,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:39,284 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 00:23:39,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002871070] [2020-10-28 00:23:39,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:23:39,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:23:39,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061862667] [2020-10-28 00:23:39,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:23:39,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:23:39,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:23:39,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:23:39,286 INFO L87 Difference]: Start difference. First operand 11564 states and 17766 transitions. Second operand 5 states. [2020-10-28 00:23:43,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:23:43,006 INFO L93 Difference]: Finished difference Result 15599 states and 23912 transitions. [2020-10-28 00:23:43,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:23:43,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-28 00:23:43,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:23:43,044 INFO L225 Difference]: With dead ends: 15599 [2020-10-28 00:23:43,044 INFO L226 Difference]: Without dead ends: 15596 [2020-10-28 00:23:43,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:23:43,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15596 states. [2020-10-28 00:23:43,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15596 to 11628. [2020-10-28 00:23:43,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11628 states. [2020-10-28 00:23:43,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11628 states to 11628 states and 17830 transitions. [2020-10-28 00:23:43,728 INFO L78 Accepts]: Start accepts. Automaton has 11628 states and 17830 transitions. Word has length 137 [2020-10-28 00:23:43,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:23:43,729 INFO L481 AbstractCegarLoop]: Abstraction has 11628 states and 17830 transitions. [2020-10-28 00:23:43,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:23:43,729 INFO L276 IsEmpty]: Start isEmpty. Operand 11628 states and 17830 transitions. [2020-10-28 00:23:43,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-28 00:23:43,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:23:43,751 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] [2020-10-28 00:23:43,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:23:43,751 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:23:43,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:23:43,752 INFO L82 PathProgramCache]: Analyzing trace with hash -875939967, now seen corresponding path program 1 times [2020-10-28 00:23:43,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:23:43,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212162124] [2020-10-28 00:23:43,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:23:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:43,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:43,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:43,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:43,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:43,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:44,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:46,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:46,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:48,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:48,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 00:23:48,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:23:48,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 00:23:48,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:48,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:23:48,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-28 00:23:48,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 00:23:48,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:49,185 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:23:49,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:23:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:49,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:49,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:49,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:23:49,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:23:49,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:23:49,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:49,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:23:49,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:23:49,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:23:49,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:49,229 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 00:23:49,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212162124] [2020-10-28 00:23:49,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:23:49,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:23:49,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472638623] [2020-10-28 00:23:49,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:23:49,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:23:49,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:23:49,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:23:49,231 INFO L87 Difference]: Start difference. First operand 11628 states and 17830 transitions. Second operand 4 states. [2020-10-28 00:23:49,662 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-28 00:23:54,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:23:54,486 INFO L93 Difference]: Finished difference Result 32487 states and 49521 transitions. [2020-10-28 00:23:54,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:23:54,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-10-28 00:23:54,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:23:54,539 INFO L225 Difference]: With dead ends: 32487 [2020-10-28 00:23:54,539 INFO L226 Difference]: Without dead ends: 21732 [2020-10-28 00:23:54,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:23:54,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21732 states. [2020-10-28 00:23:55,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21732 to 21729. [2020-10-28 00:23:55,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21729 states. [2020-10-28 00:23:55,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21729 states to 21729 states and 32973 transitions. [2020-10-28 00:23:55,591 INFO L78 Accepts]: Start accepts. Automaton has 21729 states and 32973 transitions. Word has length 138 [2020-10-28 00:23:55,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:23:55,591 INFO L481 AbstractCegarLoop]: Abstraction has 21729 states and 32973 transitions. [2020-10-28 00:23:55,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:23:55,591 INFO L276 IsEmpty]: Start isEmpty. Operand 21729 states and 32973 transitions. [2020-10-28 00:23:55,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-28 00:23:55,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:23:55,622 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] [2020-10-28 00:23:55,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:23:55,622 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:23:55,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:23:55,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1166307968, now seen corresponding path program 1 times [2020-10-28 00:23:55,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:23:55,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874259510] [2020-10-28 00:23:55,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:23:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:55,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:55,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:55,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:55,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:55,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:56,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:56,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:59,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:00,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:00,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 00:24:00,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:24:00,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 00:24:00,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:00,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:24:00,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-28 00:24:00,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 00:24:00,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:01,090 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:24:01,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:24:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:01,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:01,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:01,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:24:01,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:24:01,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:24:01,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:01,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:24:01,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:24:01,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:24:01,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:01,160 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 00:24:01,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874259510] [2020-10-28 00:24:01,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:24:01,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:24:01,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892404403] [2020-10-28 00:24:01,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:24:01,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:24:01,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:24:01,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:24:01,163 INFO L87 Difference]: Start difference. First operand 21729 states and 32973 transitions. Second operand 4 states. [2020-10-28 00:24:01,587 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-28 00:24:07,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:24:07,156 INFO L93 Difference]: Finished difference Result 50611 states and 76554 transitions. [2020-10-28 00:24:07,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:24:07,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-10-28 00:24:07,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:24:07,218 INFO L225 Difference]: With dead ends: 50611 [2020-10-28 00:24:07,219 INFO L226 Difference]: Without dead ends: 32929 [2020-10-28 00:24:07,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:24:07,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32929 states. [2020-10-28 00:24:08,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32929 to 31582. [2020-10-28 00:24:08,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31582 states. [2020-10-28 00:24:08,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31582 states to 31582 states and 47531 transitions. [2020-10-28 00:24:08,921 INFO L78 Accepts]: Start accepts. Automaton has 31582 states and 47531 transitions. Word has length 138 [2020-10-28 00:24:08,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:24:08,922 INFO L481 AbstractCegarLoop]: Abstraction has 31582 states and 47531 transitions. [2020-10-28 00:24:08,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:24:08,922 INFO L276 IsEmpty]: Start isEmpty. Operand 31582 states and 47531 transitions. [2020-10-28 00:24:08,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-28 00:24:08,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:24:08,965 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] [2020-10-28 00:24:08,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:24:08,966 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:24:08,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:24:08,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1959232523, now seen corresponding path program 1 times [2020-10-28 00:24:08,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:24:08,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640578559] [2020-10-28 00:24:08,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:24:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:08,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:09,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:09,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:09,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:09,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:10,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:11,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:11,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 00:24:11,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:24:11,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2016 [2020-10-28 00:24:11,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:11,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:24:11,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-28 00:24:11,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 00:24:11,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:11,452 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:24:11,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:24:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:11,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:11,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:11,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:24:11,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:24:11,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:24:11,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:11,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:24:11,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:24:11,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:24:11,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:11,502 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 00:24:11,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640578559] [2020-10-28 00:24:11,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:24:11,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:24:11,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604205246] [2020-10-28 00:24:11,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:24:11,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:24:11,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:24:11,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:24:11,504 INFO L87 Difference]: Start difference. First operand 31582 states and 47531 transitions. Second operand 4 states. [2020-10-28 00:24:16,793 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 00:24:16,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:24:16,805 INFO L93 Difference]: Finished difference Result 56514 states and 85069 transitions. [2020-10-28 00:24:16,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:24:16,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-10-28 00:24:16,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:24:16,859 INFO L225 Difference]: With dead ends: 56514 [2020-10-28 00:24:16,860 INFO L226 Difference]: Without dead ends: 31585 [2020-10-28 00:24:16,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:24:16,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31585 states. [2020-10-28 00:24:18,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31585 to 31582. [2020-10-28 00:24:18,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31582 states. [2020-10-28 00:24:18,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31582 states to 31582 states and 47323 transitions. [2020-10-28 00:24:18,995 INFO L78 Accepts]: Start accepts. Automaton has 31582 states and 47323 transitions. Word has length 138 [2020-10-28 00:24:18,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:24:18,995 INFO L481 AbstractCegarLoop]: Abstraction has 31582 states and 47323 transitions. [2020-10-28 00:24:18,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:24:18,996 INFO L276 IsEmpty]: Start isEmpty. Operand 31582 states and 47323 transitions. [2020-10-28 00:24:19,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-28 00:24:19,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:24:19,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:24:19,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 00:24:19,040 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:24:19,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:24:19,041 INFO L82 PathProgramCache]: Analyzing trace with hash -82212164, now seen corresponding path program 1 times [2020-10-28 00:24:19,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:24:19,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639038296] [2020-10-28 00:24:19,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:24:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:19,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:19,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:19,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:19,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:20,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:20,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:20,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 00:24:20,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:24:20,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1222 [2020-10-28 00:24:20,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:20,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:24:20,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 00:24:20,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 00:24:20,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:20,679 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:24:20,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:24:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:20,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:20,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:20,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:24:20,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:24:20,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:24:20,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:20,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:24:20,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:24:20,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:24:20,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:20,724 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 00:24:20,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639038296] [2020-10-28 00:24:20,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:24:20,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:24:20,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127695483] [2020-10-28 00:24:20,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:24:20,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:24:20,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:24:20,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:24:20,726 INFO L87 Difference]: Start difference. First operand 31582 states and 47323 transitions. Second operand 4 states. [2020-10-28 00:24:25,871 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-28 00:24:25,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:24:25,885 INFO L93 Difference]: Finished difference Result 64484 states and 96495 transitions. [2020-10-28 00:24:25,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:24:25,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-10-28 00:24:25,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:24:25,940 INFO L225 Difference]: With dead ends: 64484 [2020-10-28 00:24:25,941 INFO L226 Difference]: Without dead ends: 39836 [2020-10-28 00:24:25,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:24:26,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39836 states. [2020-10-28 00:24:27,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39836 to 39829. [2020-10-28 00:24:27,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39829 states. [2020-10-28 00:24:27,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39829 states to 39829 states and 59385 transitions. [2020-10-28 00:24:27,843 INFO L78 Accepts]: Start accepts. Automaton has 39829 states and 59385 transitions. Word has length 138 [2020-10-28 00:24:27,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:24:27,843 INFO L481 AbstractCegarLoop]: Abstraction has 39829 states and 59385 transitions. [2020-10-28 00:24:27,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:24:27,843 INFO L276 IsEmpty]: Start isEmpty. Operand 39829 states and 59385 transitions. [2020-10-28 00:24:27,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-28 00:24:27,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:24:27,885 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] [2020-10-28 00:24:27,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 00:24:27,885 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:24:27,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:24:27,886 INFO L82 PathProgramCache]: Analyzing trace with hash 745854950, now seen corresponding path program 1 times [2020-10-28 00:24:27,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:24:27,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049316446] [2020-10-28 00:24:27,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:24:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:27,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:28,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:28,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-28 00:24:28,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:24:28,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-28 00:24:28,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:28,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:24:28,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 00:24:28,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:24:28,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:28,671 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:24:28,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:24:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:28,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:28,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:28,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:24:28,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:24:28,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:24:28,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:28,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:24:28,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:24:28,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:24:28,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:28,713 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 00:24:28,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049316446] [2020-10-28 00:24:28,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:24:28,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:24:28,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311101339] [2020-10-28 00:24:28,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:24:28,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:24:28,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:24:28,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:24:28,714 INFO L87 Difference]: Start difference. First operand 39829 states and 59385 transitions. Second operand 5 states. [2020-10-28 00:24:32,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:24:32,806 INFO L93 Difference]: Finished difference Result 67719 states and 100984 transitions. [2020-10-28 00:24:32,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:24:32,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-28 00:24:32,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:24:32,837 INFO L225 Difference]: With dead ends: 67719 [2020-10-28 00:24:32,837 INFO L226 Difference]: Without dead ends: 27937 [2020-10-28 00:24:32,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:24:32,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27937 states. [2020-10-28 00:24:34,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27937 to 27937. [2020-10-28 00:24:34,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27937 states. [2020-10-28 00:24:34,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27937 states to 27937 states and 41646 transitions. [2020-10-28 00:24:34,351 INFO L78 Accepts]: Start accepts. Automaton has 27937 states and 41646 transitions. Word has length 139 [2020-10-28 00:24:34,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:24:34,352 INFO L481 AbstractCegarLoop]: Abstraction has 27937 states and 41646 transitions. [2020-10-28 00:24:34,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:24:34,352 INFO L276 IsEmpty]: Start isEmpty. Operand 27937 states and 41646 transitions. [2020-10-28 00:24:34,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-28 00:24:34,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:24:34,369 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] [2020-10-28 00:24:34,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 00:24:34,369 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:24:34,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:24:34,370 INFO L82 PathProgramCache]: Analyzing trace with hash 377887312, now seen corresponding path program 1 times [2020-10-28 00:24:34,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:24:34,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296282060] [2020-10-28 00:24:34,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:24:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:34,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:34,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:34,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:34,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:34,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:35,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:35,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:35,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:35,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:35,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:35,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:36,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:36,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:36,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:36,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:36,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:36,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:36,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:36,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:37,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:37,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:37,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:37,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:37,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:37,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:38,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:38,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:38,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:38,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:38,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:38,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:38,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:38,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:39,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:39,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 00:24:39,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 33 [2020-10-28 00:24:39,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 00:24:39,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:39,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:24:39,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 00:24:39,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 00:24:39,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:39,825 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:24:39,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:24:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:39,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:39,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:39,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:24:39,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:24:39,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:24:39,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:39,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:24:39,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:24:39,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:24:39,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:39,877 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 00:24:39,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296282060] [2020-10-28 00:24:39,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:24:39,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:24:39,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787680933] [2020-10-28 00:24:39,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:24:39,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:24:39,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:24:39,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:24:39,879 INFO L87 Difference]: Start difference. First operand 27937 states and 41646 transitions. Second operand 4 states. [2020-10-28 00:24:40,332 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 00:24:43,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:24:43,451 INFO L93 Difference]: Finished difference Result 27943 states and 41650 transitions. [2020-10-28 00:24:43,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:24:43,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 179 [2020-10-28 00:24:43,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:24:43,468 INFO L225 Difference]: With dead ends: 27943 [2020-10-28 00:24:43,469 INFO L226 Difference]: Without dead ends: 13758 [2020-10-28 00:24:43,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:24:43,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13758 states. [2020-10-28 00:24:44,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13758 to 13755. [2020-10-28 00:24:44,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13755 states. [2020-10-28 00:24:44,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13755 states to 13755 states and 20492 transitions. [2020-10-28 00:24:44,203 INFO L78 Accepts]: Start accepts. Automaton has 13755 states and 20492 transitions. Word has length 179 [2020-10-28 00:24:44,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:24:44,203 INFO L481 AbstractCegarLoop]: Abstraction has 13755 states and 20492 transitions. [2020-10-28 00:24:44,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:24:44,203 INFO L276 IsEmpty]: Start isEmpty. Operand 13755 states and 20492 transitions. [2020-10-28 00:24:44,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-28 00:24:44,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:24:44,212 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] [2020-10-28 00:24:44,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 00:24:44,212 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:24:44,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:24:44,212 INFO L82 PathProgramCache]: Analyzing trace with hash 512733808, now seen corresponding path program 1 times [2020-10-28 00:24:44,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:24:44,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682087205] [2020-10-28 00:24:44,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:24:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:44,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:44,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:44,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:44,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:44,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:44,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:44,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:44,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:44,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:45,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:45,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:45,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:45,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:45,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:45,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:45,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:45,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:45,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:45,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:46,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:46,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:46,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:46,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:46,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:46,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:46,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:47,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:47,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:47,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:47,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:47,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:47,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:48,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:49,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:49,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 00:24:49,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 33 [2020-10-28 00:24:49,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 00:24:49,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:49,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 00:24:49,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 00:24:49,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 00:24:49,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:49,814 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:24:49,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:24:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:49,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:49,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:49,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:24:49,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:24:49,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:24:49,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:49,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:24:49,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:24:49,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:24:49,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:50,017 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 00:24:50,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682087205] [2020-10-28 00:24:50,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:24:50,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 00:24:50,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491017194] [2020-10-28 00:24:50,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 00:24:50,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:24:50,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 00:24:50,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 00:24:50,019 INFO L87 Difference]: Start difference. First operand 13755 states and 20492 transitions. Second operand 9 states. [2020-10-28 00:24:58,843 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 00:24:59,305 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-28 00:24:59,832 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 00:25:00,281 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 00:25:00,759 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-10-28 00:25:01,279 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-28 00:25:02,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:25:02,826 INFO L93 Difference]: Finished difference Result 76439 states and 112118 transitions. [2020-10-28 00:25:02,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 00:25:02,827 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 179 [2020-10-28 00:25:02,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:25:02,902 INFO L225 Difference]: With dead ends: 76439 [2020-10-28 00:25:02,903 INFO L226 Difference]: Without dead ends: 65464 [2020-10-28 00:25:02,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-28 00:25:02,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65464 states. [2020-10-28 00:25:07,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65464 to 65149. [2020-10-28 00:25:07,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65149 states. [2020-10-28 00:25:07,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65149 states to 65149 states and 95278 transitions. [2020-10-28 00:25:07,426 INFO L78 Accepts]: Start accepts. Automaton has 65149 states and 95278 transitions. Word has length 179 [2020-10-28 00:25:07,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:25:07,427 INFO L481 AbstractCegarLoop]: Abstraction has 65149 states and 95278 transitions. [2020-10-28 00:25:07,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 00:25:07,427 INFO L276 IsEmpty]: Start isEmpty. Operand 65149 states and 95278 transitions. [2020-10-28 00:25:07,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-28 00:25:07,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:25:07,467 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] [2020-10-28 00:25:07,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 00:25:07,467 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:25:07,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:25:07,467 INFO L82 PathProgramCache]: Analyzing trace with hash -181152840, now seen corresponding path program 1 times [2020-10-28 00:25:07,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:25:07,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775380099] [2020-10-28 00:25:07,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:25:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:25:07,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:07,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:07,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:07,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:07,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:08,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:08,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:08,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:08,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:08,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:08,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:08,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:08,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:09,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:09,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:09,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:09,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:09,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:09,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:09,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:09,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:09,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:10,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:10,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:10,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:10,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:10,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:10,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:10,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:10,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:10,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:10,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:10,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:11,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:11,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:11,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:11,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:11,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:11,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:11,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:11,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:11,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:11,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:11,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:12,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:12,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:12,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:12,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:25:12,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 00:25:12,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 47 [2020-10-28 00:25:12,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 00:25:12,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:25:12,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:25:12,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:25:12,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 00:25:12,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:25:12,934 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:25:12,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:25:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:25:12,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:12,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:25:12,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:25:12,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:25:12,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:25:12,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:25:12,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:25:12,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:25:12,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:25:12,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:25:12,989 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 00:25:12,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775380099] [2020-10-28 00:25:12,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:25:12,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:25:12,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586371709] [2020-10-28 00:25:12,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:25:12,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:25:12,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:25:12,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:25:12,991 INFO L87 Difference]: Start difference. First operand 65149 states and 95278 transitions. Second operand 4 states. [2020-10-28 00:25:13,455 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 00:25:20,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:25:20,087 INFO L93 Difference]: Finished difference Result 116335 states and 170162 transitions. [2020-10-28 00:25:20,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:25:20,087 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 179 [2020-10-28 00:25:20,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:25:20,154 INFO L225 Difference]: With dead ends: 116335 [2020-10-28 00:25:20,154 INFO L226 Difference]: Without dead ends: 60832 [2020-10-28 00:25:20,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:25:20,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60832 states. [2020-10-28 00:25:24,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60832 to 60829. [2020-10-28 00:25:24,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60829 states. [2020-10-28 00:25:24,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60829 states to 60829 states and 88970 transitions. [2020-10-28 00:25:24,342 INFO L78 Accepts]: Start accepts. Automaton has 60829 states and 88970 transitions. Word has length 179 [2020-10-28 00:25:24,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:25:24,342 INFO L481 AbstractCegarLoop]: Abstraction has 60829 states and 88970 transitions. [2020-10-28 00:25:24,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:25:24,342 INFO L276 IsEmpty]: Start isEmpty. Operand 60829 states and 88970 transitions. [2020-10-28 00:25:24,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-28 00:25:24,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:25:24,376 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] [2020-10-28 00:25:24,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 00:25:24,377 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:25:24,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:25:24,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1827048211, now seen corresponding path program 1 times [2020-10-28 00:25:24,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:25:24,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871786186] [2020-10-28 00:25:24,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:25:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:25:24,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:24,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:24,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:24,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:24,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:25,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:25,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:25,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:26,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:26,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:26,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:26,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:27,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:27,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:27,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:27,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:27,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:27,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:28,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:28,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:28,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:28,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:29,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:29,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:29,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:29,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:29,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:29,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:29,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:29,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:25:29,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 00:25:29,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-10-28 00:25:29,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 00:25:29,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:25:29,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:25:29,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-28 00:25:29,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:25:29,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:25:29,888 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:25:29,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:25:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:25:29,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:29,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:25:29,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:25:29,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:25:29,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:25:29,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:25:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:25:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:25:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:25:29,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:25:29,929 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 00:25:29,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871786186] [2020-10-28 00:25:29,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:25:29,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:25:29,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064886695] [2020-10-28 00:25:29,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:25:29,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:25:29,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:25:29,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:25:29,931 INFO L87 Difference]: Start difference. First operand 60829 states and 88970 transitions. Second operand 5 states. [2020-10-28 00:25:35,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:25:35,581 INFO L93 Difference]: Finished difference Result 100008 states and 146364 transitions. [2020-10-28 00:25:35,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:25:35,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-10-28 00:25:35,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:25:35,657 INFO L225 Difference]: With dead ends: 100008 [2020-10-28 00:25:35,657 INFO L226 Difference]: Without dead ends: 60681 [2020-10-28 00:25:35,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:25:35,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60681 states. [2020-10-28 00:25:39,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60681 to 57725. [2020-10-28 00:25:39,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57725 states. [2020-10-28 00:25:39,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57725 states to 57725 states and 84382 transitions. [2020-10-28 00:25:39,845 INFO L78 Accepts]: Start accepts. Automaton has 57725 states and 84382 transitions. Word has length 179 [2020-10-28 00:25:39,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:25:39,845 INFO L481 AbstractCegarLoop]: Abstraction has 57725 states and 84382 transitions. [2020-10-28 00:25:39,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:25:39,846 INFO L276 IsEmpty]: Start isEmpty. Operand 57725 states and 84382 transitions. [2020-10-28 00:25:39,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-28 00:25:39,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:25:39,881 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] [2020-10-28 00:25:39,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 00:25:39,881 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:25:39,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:25:39,882 INFO L82 PathProgramCache]: Analyzing trace with hash -338488898, now seen corresponding path program 1 times [2020-10-28 00:25:39,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:25:39,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208718991] [2020-10-28 00:25:39,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:25:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:25:39,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:39,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:39,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:40,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:40,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:40,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:41,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:41,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:41,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:41,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:41,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:41,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:42,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:42,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:43,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:43,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:43,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:43,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:43,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:43,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:43,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:43,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:43,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:43,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:43,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:44,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:44,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:44,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:44,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:44,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:44,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:44,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:44,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:44,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:25:44,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 00:25:44,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 33 [2020-10-28 00:25:44,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 00:25:44,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:25:44,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:25:44,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 00:25:44,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 00:25:44,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:25:45,345 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:25:45,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:25:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:25:45,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:25:45,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:25:45,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:25:45,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:25:45,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:25:45,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:25:45,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:25:45,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:25:45,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:25:45,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:25:45,393 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 00:25:45,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208718991] [2020-10-28 00:25:45,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:25:45,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:25:45,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146479833] [2020-10-28 00:25:45,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:25:45,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:25:45,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:25:45,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:25:45,395 INFO L87 Difference]: Start difference. First operand 57725 states and 84382 transitions. Second operand 4 states. [2020-10-28 00:25:45,842 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 00:25:51,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:25:51,713 INFO L93 Difference]: Finished difference Result 107331 states and 156984 transitions. [2020-10-28 00:25:51,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:25:51,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 179 [2020-10-28 00:25:51,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:25:51,770 INFO L225 Difference]: With dead ends: 107331 [2020-10-28 00:25:51,770 INFO L226 Difference]: Without dead ends: 56074 [2020-10-28 00:25:51,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:25:51,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56074 states.