/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 19:16:54,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 19:16:54,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 19:16:54,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 19:16:54,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 19:16:54,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 19:16:54,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 19:16:54,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 19:16:54,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 19:16:54,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 19:16:54,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 19:16:54,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 19:16:54,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 19:16:54,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 19:16:54,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 19:16:54,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 19:16:54,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 19:16:54,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 19:16:54,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 19:16:54,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 19:16:54,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 19:16:54,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 19:16:54,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 19:16:54,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 19:16:54,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 19:16:54,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 19:16:54,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 19:16:54,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 19:16:54,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 19:16:54,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 19:16:54,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 19:16:54,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 19:16:54,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 19:16:54,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 19:16:54,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 19:16:54,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 19:16:54,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 19:16:54,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 19:16:54,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 19:16:54,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 19:16:54,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 19:16:54,453 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 19:16:54,480 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 19:16:54,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 19:16:54,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 19:16:54,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 19:16:54,483 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 19:16:54,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 19:16:54,484 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 19:16:54,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 19:16:54,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 19:16:54,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 19:16:54,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 19:16:54,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 19:16:54,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 19:16:54,486 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 19:16:54,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 19:16:54,487 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 19:16:54,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 19:16:54,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 19:16:54,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 19:16:54,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 19:16:54,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 19:16:54,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:16:54,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 19:16:54,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 19:16:54,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 19:16:54,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 19:16:54,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 19:16:54,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 19:16:54,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 19:16:54,491 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 19:16:54,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 19:16:55,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 19:16:55,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 19:16:55,031 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 19:16:55,032 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 19:16:55,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 19:16:55,124 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce9e70a15/3fd7d4f338ce41298ac6167a040333a6/FLAG52e6016bc [2020-10-28 19:16:55,844 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 19:16:55,845 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 19:16:55,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce9e70a15/3fd7d4f338ce41298ac6167a040333a6/FLAG52e6016bc [2020-10-28 19:16:56,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce9e70a15/3fd7d4f338ce41298ac6167a040333a6 [2020-10-28 19:16:56,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 19:16:56,121 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 19:16:56,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 19:16:56,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 19:16:56,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 19:16:56,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:16:56" (1/1) ... [2020-10-28 19:16:56,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52d7839e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:56, skipping insertion in model container [2020-10-28 19:16:56,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:16:56" (1/1) ... [2020-10-28 19:16:56,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 19:16:56,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 19:16:56,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:16:56,863 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 19:16:57,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:16:57,049 INFO L208 MainTranslator]: Completed translation [2020-10-28 19:16:57,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:57 WrapperNode [2020-10-28 19:16:57,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 19:16:57,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 19:16:57,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 19:16:57,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 19:16:57,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:57" (1/1) ... [2020-10-28 19:16:57,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:57" (1/1) ... [2020-10-28 19:16:57,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:57" (1/1) ... [2020-10-28 19:16:57,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:57" (1/1) ... [2020-10-28 19:16:57,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:57" (1/1) ... [2020-10-28 19:16:57,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:57" (1/1) ... [2020-10-28 19:16:57,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:57" (1/1) ... [2020-10-28 19:16:57,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 19:16:57,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 19:16:57,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 19:16:57,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 19:16:57,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:16:57,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 19:16:57,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 19:16:57,254 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 19:16:57,254 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 19:16:57,255 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 19:16:57,255 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 19:16:57,255 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 19:16:57,255 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 19:16:57,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 19:16:57,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 19:16:57,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 19:16:57,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 19:16:57,256 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 19:16:57,256 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 19:16:57,256 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 19:16:57,257 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 19:16:57,257 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 19:16:57,257 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 19:16:57,257 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 19:16:57,257 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 19:16:57,257 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 19:16:57,258 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 19:16:57,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 19:16:57,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 19:16:57,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 19:16:57,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 19:16:57,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 19:16:57,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 19:16:58,714 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 19:16:58,715 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 19:16:58,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:16:58 BoogieIcfgContainer [2020-10-28 19:16:58,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 19:16:58,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 19:16:58,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 19:16:58,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 19:16:58,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 07:16:56" (1/3) ... [2020-10-28 19:16:58,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3741282f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:16:58, skipping insertion in model container [2020-10-28 19:16:58,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:57" (2/3) ... [2020-10-28 19:16:58,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3741282f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:16:58, skipping insertion in model container [2020-10-28 19:16:58,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:16:58" (3/3) ... [2020-10-28 19:16:58,727 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 19:16:58,739 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 19:16:58,745 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 19:16:58,758 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 19:16:58,788 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 19:16:58,789 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 19:16:58,789 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 19:16:58,789 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 19:16:58,789 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 19:16:58,789 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 19:16:58,790 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 19:16:58,790 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 19:16:58,815 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states. [2020-10-28 19:16:58,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 19:16:58,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:16:58,834 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] [2020-10-28 19:16:58,834 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:16:58,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:16:58,841 INFO L82 PathProgramCache]: Analyzing trace with hash -477280769, now seen corresponding path program 1 times [2020-10-28 19:16:58,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:16:58,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183861975] [2020-10-28 19:16:58,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:16:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:59,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:59,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:00,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:00,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:00,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:00,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:00,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:00,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:00,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:01,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:02,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:02,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:04,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:04,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 19:17:04,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:17:04,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-28 19:17:04,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:04,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:04,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:17:04,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 19:17:04,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 19:17:04,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 19:17:04,863 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:17:04,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:04,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:04,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:04,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:04,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:04,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 19:17:04,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:04,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:04,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:04,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:04,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:04,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 19:17:05,010 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 19:17:05,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183861975] [2020-10-28 19:17:05,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:05,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:17:05,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902825282] [2020-10-28 19:17:05,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:17:05,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:05,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:17:05,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:17:05,043 INFO L87 Difference]: Start difference. First operand 353 states. Second operand 4 states. [2020-10-28 19:17:05,444 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 19:17:07,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:07,613 INFO L93 Difference]: Finished difference Result 697 states and 1202 transitions. [2020-10-28 19:17:07,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:17:07,615 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-28 19:17:07,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:07,655 INFO L225 Difference]: With dead ends: 697 [2020-10-28 19:17:07,656 INFO L226 Difference]: Without dead ends: 563 [2020-10-28 19:17:07,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:07,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-10-28 19:17:07,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 560. [2020-10-28 19:17:07,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-28 19:17:07,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 835 transitions. [2020-10-28 19:17:07,775 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 835 transitions. Word has length 160 [2020-10-28 19:17:07,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:07,779 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 835 transitions. [2020-10-28 19:17:07,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:17:07,779 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 835 transitions. [2020-10-28 19:17:07,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 19:17:07,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:07,790 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] [2020-10-28 19:17:07,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 19:17:07,790 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:07,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:07,791 INFO L82 PathProgramCache]: Analyzing trace with hash -955239738, now seen corresponding path program 1 times [2020-10-28 19:17:07,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:07,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871091092] [2020-10-28 19:17:07,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:07,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:08,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:08,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:08,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:08,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:08,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:08,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:08,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:08,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:09,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:09,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:09,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:12,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:12,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 19:17:12,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:17:12,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 19:17:12,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:12,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:12,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:17:12,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 19:17:12,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 19:17:12,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:17:13,217 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:17:13,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:13,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:13,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:13,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:13,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:13,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 19:17:13,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:13,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:13,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:13,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:13,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:13,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:13,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:17:13,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871091092] [2020-10-28 19:17:13,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:13,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:17:13,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126444480] [2020-10-28 19:17:13,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:17:13,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:13,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:17:13,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:17:13,327 INFO L87 Difference]: Start difference. First operand 560 states and 835 transitions. Second operand 4 states. [2020-10-28 19:17:13,734 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 19:17:15,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:15,231 INFO L93 Difference]: Finished difference Result 1190 states and 1822 transitions. [2020-10-28 19:17:15,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:17:15,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-28 19:17:15,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:15,241 INFO L225 Difference]: With dead ends: 1190 [2020-10-28 19:17:15,242 INFO L226 Difference]: Without dead ends: 975 [2020-10-28 19:17:15,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:15,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2020-10-28 19:17:15,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2020-10-28 19:17:15,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 972 states. [2020-10-28 19:17:15,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1463 transitions. [2020-10-28 19:17:15,329 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1463 transitions. Word has length 160 [2020-10-28 19:17:15,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:15,331 INFO L481 AbstractCegarLoop]: Abstraction has 972 states and 1463 transitions. [2020-10-28 19:17:15,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:17:15,331 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1463 transitions. [2020-10-28 19:17:15,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 19:17:15,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:15,339 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] [2020-10-28 19:17:15,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 19:17:15,339 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:15,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:15,343 INFO L82 PathProgramCache]: Analyzing trace with hash 883241763, now seen corresponding path program 1 times [2020-10-28 19:17:15,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:15,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027391166] [2020-10-28 19:17:15,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:15,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:15,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:15,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:15,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:15,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:15,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:15,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:16,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:16,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:16,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:16,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:16,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:20,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:20,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 19:17:20,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:17:20,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 19:17:20,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:20,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:20,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:20,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:20,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 19:17:20,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:20,923 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:17:20,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:20,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:21,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:21,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:21,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:21,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 19:17:21,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:21,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:21,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:21,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:21,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:21,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:21,140 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 19:17:21,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027391166] [2020-10-28 19:17:21,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:21,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:21,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609741262] [2020-10-28 19:17:21,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:21,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:21,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:21,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:21,146 INFO L87 Difference]: Start difference. First operand 972 states and 1463 transitions. Second operand 5 states. [2020-10-28 19:17:23,111 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:17:24,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:24,209 INFO L93 Difference]: Finished difference Result 2837 states and 4262 transitions. [2020-10-28 19:17:24,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:17:24,209 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-28 19:17:24,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:24,220 INFO L225 Difference]: With dead ends: 2837 [2020-10-28 19:17:24,221 INFO L226 Difference]: Without dead ends: 1878 [2020-10-28 19:17:24,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:17:24,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2020-10-28 19:17:24,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1875. [2020-10-28 19:17:24,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1875 states. [2020-10-28 19:17:24,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 2796 transitions. [2020-10-28 19:17:24,354 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 2796 transitions. Word has length 160 [2020-10-28 19:17:24,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:24,355 INFO L481 AbstractCegarLoop]: Abstraction has 1875 states and 2796 transitions. [2020-10-28 19:17:24,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:24,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 2796 transitions. [2020-10-28 19:17:24,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-28 19:17:24,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:24,360 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] [2020-10-28 19:17:24,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 19:17:24,360 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:24,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:24,361 INFO L82 PathProgramCache]: Analyzing trace with hash -820380136, now seen corresponding path program 1 times [2020-10-28 19:17:24,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:24,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249710015] [2020-10-28 19:17:24,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:24,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:24,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:24,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:24,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:24,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:24,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:24,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:24,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:24,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:25,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:29,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:29,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 19:17:29,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:17:29,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 19:17:29,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:29,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:29,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:29,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:29,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 19:17:29,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:17:29,905 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:17:29,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:29,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:29,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:29,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:29,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:29,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 19:17:29,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:29,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:29,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:29,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:29,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:29,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:30,005 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 19:17:30,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249710015] [2020-10-28 19:17:30,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:30,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:30,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156994639] [2020-10-28 19:17:30,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:30,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:30,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:30,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:30,009 INFO L87 Difference]: Start difference. First operand 1875 states and 2796 transitions. Second operand 5 states. [2020-10-28 19:17:32,292 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:17:33,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:33,405 INFO L93 Difference]: Finished difference Result 5325 states and 7941 transitions. [2020-10-28 19:17:33,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:17:33,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-28 19:17:33,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:33,425 INFO L225 Difference]: With dead ends: 5325 [2020-10-28 19:17:33,425 INFO L226 Difference]: Without dead ends: 3615 [2020-10-28 19:17:33,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:17:33,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3615 states. [2020-10-28 19:17:33,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3615 to 3612. [2020-10-28 19:17:33,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3612 states. [2020-10-28 19:17:33,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 5324 transitions. [2020-10-28 19:17:33,674 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 5324 transitions. Word has length 161 [2020-10-28 19:17:33,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:33,674 INFO L481 AbstractCegarLoop]: Abstraction has 3612 states and 5324 transitions. [2020-10-28 19:17:33,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:33,675 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 5324 transitions. [2020-10-28 19:17:33,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-28 19:17:33,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:33,682 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] [2020-10-28 19:17:33,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 19:17:33,682 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:33,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:33,683 INFO L82 PathProgramCache]: Analyzing trace with hash 899862726, now seen corresponding path program 1 times [2020-10-28 19:17:33,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:33,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573870816] [2020-10-28 19:17:33,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:33,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:33,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:33,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:33,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:33,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:34,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:34,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:34,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:35,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:38,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:38,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:38,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:38,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:38,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:38,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 19:17:38,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 19:17:38,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 19:17:38,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:38,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 19:17:38,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:39,053 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:17:39,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:39,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:39,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:39,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:39,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:39,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:17:39,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:39,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:39,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:39,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:39,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:39,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 19:17:39,201 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 19:17:39,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573870816] [2020-10-28 19:17:39,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:39,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:39,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832722502] [2020-10-28 19:17:39,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:39,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:39,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:39,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:39,204 INFO L87 Difference]: Start difference. First operand 3612 states and 5324 transitions. Second operand 5 states. [2020-10-28 19:17:41,148 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:17:42,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:42,242 INFO L93 Difference]: Finished difference Result 9821 states and 14406 transitions. [2020-10-28 19:17:42,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:17:42,243 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-28 19:17:42,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:42,274 INFO L225 Difference]: With dead ends: 9821 [2020-10-28 19:17:42,274 INFO L226 Difference]: Without dead ends: 6268 [2020-10-28 19:17:42,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:17:42,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6268 states. [2020-10-28 19:17:42,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6268 to 6265. [2020-10-28 19:17:42,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6265 states. [2020-10-28 19:17:42,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6265 states to 6265 states and 9096 transitions. [2020-10-28 19:17:42,706 INFO L78 Accepts]: Start accepts. Automaton has 6265 states and 9096 transitions. Word has length 162 [2020-10-28 19:17:42,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:42,707 INFO L481 AbstractCegarLoop]: Abstraction has 6265 states and 9096 transitions. [2020-10-28 19:17:42,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:42,707 INFO L276 IsEmpty]: Start isEmpty. Operand 6265 states and 9096 transitions. [2020-10-28 19:17:42,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-28 19:17:42,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:42,718 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] [2020-10-28 19:17:42,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 19:17:42,718 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:42,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:42,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1512287002, now seen corresponding path program 1 times [2020-10-28 19:17:42,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:42,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417527831] [2020-10-28 19:17:42,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:42,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:42,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:42,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:42,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:42,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:43,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:43,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:43,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:44,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:44,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:44,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:45,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:47,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:47,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 19:17:47,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:17:47,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 19:17:47,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:47,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:47,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:47,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:47,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 19:17:47,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:48,124 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:17:48,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:48,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:48,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:48,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:48,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:48,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 19:17:48,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:48,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:48,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:48,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:48,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:48,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:48,230 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 19:17:48,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417527831] [2020-10-28 19:17:48,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:48,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:48,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717968148] [2020-10-28 19:17:48,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:48,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:48,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:48,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:48,232 INFO L87 Difference]: Start difference. First operand 6265 states and 9096 transitions. Second operand 5 states. [2020-10-28 19:17:50,475 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:17:51,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:51,653 INFO L93 Difference]: Finished difference Result 18096 states and 26184 transitions. [2020-10-28 19:17:51,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:17:51,654 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-28 19:17:51,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:51,714 INFO L225 Difference]: With dead ends: 18096 [2020-10-28 19:17:51,714 INFO L226 Difference]: Without dead ends: 12064 [2020-10-28 19:17:51,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:17:51,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12064 states. [2020-10-28 19:17:52,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12064 to 12061. [2020-10-28 19:17:52,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12061 states. [2020-10-28 19:17:52,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12061 states to 12061 states and 17280 transitions. [2020-10-28 19:17:52,522 INFO L78 Accepts]: Start accepts. Automaton has 12061 states and 17280 transitions. Word has length 163 [2020-10-28 19:17:52,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:52,523 INFO L481 AbstractCegarLoop]: Abstraction has 12061 states and 17280 transitions. [2020-10-28 19:17:52,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:52,523 INFO L276 IsEmpty]: Start isEmpty. Operand 12061 states and 17280 transitions. [2020-10-28 19:17:52,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 19:17:52,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:52,543 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] [2020-10-28 19:17:52,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 19:17:52,543 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:52,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:52,544 INFO L82 PathProgramCache]: Analyzing trace with hash -405467929, now seen corresponding path program 1 times [2020-10-28 19:17:52,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:52,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014291771] [2020-10-28 19:17:52,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:52,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:52,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:52,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:52,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:52,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:52,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:53,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:53,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:54,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:55,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:57,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:57,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:57,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 19:17:57,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 19:17:57,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 19:17:57,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:57,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:57,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:57,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:57,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 19:17:57,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:57,921 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:17:57,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:57,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:57,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:57,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:57,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:57,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 19:17:57,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:57,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:57,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:57,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:57,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:57,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:57,990 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 19:17:57,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014291771] [2020-10-28 19:17:57,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:57,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:57,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969518145] [2020-10-28 19:17:57,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:57,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:57,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:57,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:57,992 INFO L87 Difference]: Start difference. First operand 12061 states and 17280 transitions. Second operand 5 states. [2020-10-28 19:18:00,593 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:18:02,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:02,008 INFO L93 Difference]: Finished difference Result 35079 states and 50077 transitions. [2020-10-28 19:18:02,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:18:02,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-28 19:18:02,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:02,059 INFO L225 Difference]: With dead ends: 35079 [2020-10-28 19:18:02,059 INFO L226 Difference]: Without dead ends: 23282 [2020-10-28 19:18:02,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:18:02,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23282 states. [2020-10-28 19:18:03,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23282 to 23279. [2020-10-28 19:18:03,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23279 states. [2020-10-28 19:18:03,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23279 states to 23279 states and 32890 transitions. [2020-10-28 19:18:03,409 INFO L78 Accepts]: Start accepts. Automaton has 23279 states and 32890 transitions. Word has length 164 [2020-10-28 19:18:03,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:03,409 INFO L481 AbstractCegarLoop]: Abstraction has 23279 states and 32890 transitions. [2020-10-28 19:18:03,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:03,410 INFO L276 IsEmpty]: Start isEmpty. Operand 23279 states and 32890 transitions. [2020-10-28 19:18:03,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-28 19:18:03,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:03,451 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] [2020-10-28 19:18:03,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 19:18:03,452 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:03,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:03,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1013213274, now seen corresponding path program 1 times [2020-10-28 19:18:03,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:03,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439465836] [2020-10-28 19:18:03,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:03,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:03,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:03,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:03,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:03,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:03,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:08,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:08,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-28 19:18:08,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:18:08,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 19:18:08,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:08,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:08,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:08,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 19:18:08,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 19:18:08,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:08,842 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:18:08,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:08,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:08,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:08,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:08,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:08,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:18:08,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:08,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:08,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:08,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:08,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:08,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:08,893 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 19:18:08,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439465836] [2020-10-28 19:18:08,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:08,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:08,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475830667] [2020-10-28 19:18:08,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:08,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:08,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:08,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:08,896 INFO L87 Difference]: Start difference. First operand 23279 states and 32890 transitions. Second operand 5 states. [2020-10-28 19:18:11,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:11,580 INFO L93 Difference]: Finished difference Result 43068 states and 60895 transitions. [2020-10-28 19:18:11,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:18:11,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-28 19:18:11,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:11,621 INFO L225 Difference]: With dead ends: 43068 [2020-10-28 19:18:11,622 INFO L226 Difference]: Without dead ends: 19897 [2020-10-28 19:18:11,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:18:11,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19897 states. [2020-10-28 19:18:12,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19897 to 19897. [2020-10-28 19:18:12,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19897 states. [2020-10-28 19:18:12,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19897 states to 19897 states and 28155 transitions. [2020-10-28 19:18:12,681 INFO L78 Accepts]: Start accepts. Automaton has 19897 states and 28155 transitions. Word has length 165 [2020-10-28 19:18:12,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:12,682 INFO L481 AbstractCegarLoop]: Abstraction has 19897 states and 28155 transitions. [2020-10-28 19:18:12,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:12,682 INFO L276 IsEmpty]: Start isEmpty. Operand 19897 states and 28155 transitions. [2020-10-28 19:18:12,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 19:18:12,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:12,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:18:12,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 19:18:12,705 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:12,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:12,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1642116854, now seen corresponding path program 1 times [2020-10-28 19:18:12,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:12,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781668336] [2020-10-28 19:18:12,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:12,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:12,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:12,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:12,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:13,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:13,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:13,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:15,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:15,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:17,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:17,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 19:18:17,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:18:17,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 19:18:17,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:17,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:17,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:17,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:18:17,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 19:18:17,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:18,128 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:18:18,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:18,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:18,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:18,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:18,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:18,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 19:18:18,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:18,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:18,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:18,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:18,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:18,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:18,196 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 19:18:18,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781668336] [2020-10-28 19:18:18,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:18,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:18,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259257994] [2020-10-28 19:18:18,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:18,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:18,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:18,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:18,198 INFO L87 Difference]: Start difference. First operand 19897 states and 28155 transitions. Second operand 5 states. [2020-10-28 19:18:21,033 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:18:22,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:22,805 INFO L93 Difference]: Finished difference Result 48956 states and 69121 transitions. [2020-10-28 19:18:22,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:18:22,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-28 19:18:22,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:22,857 INFO L225 Difference]: With dead ends: 48956 [2020-10-28 19:18:22,857 INFO L226 Difference]: Without dead ends: 29735 [2020-10-28 19:18:22,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:18:22,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29735 states. [2020-10-28 19:18:24,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29735 to 29732. [2020-10-28 19:18:24,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29732 states. [2020-10-28 19:18:24,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29732 states to 29732 states and 41320 transitions. [2020-10-28 19:18:24,866 INFO L78 Accepts]: Start accepts. Automaton has 29732 states and 41320 transitions. Word has length 168 [2020-10-28 19:18:24,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:24,866 INFO L481 AbstractCegarLoop]: Abstraction has 29732 states and 41320 transitions. [2020-10-28 19:18:24,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:24,866 INFO L276 IsEmpty]: Start isEmpty. Operand 29732 states and 41320 transitions. [2020-10-28 19:18:24,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-28 19:18:24,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:24,892 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] [2020-10-28 19:18:24,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 19:18:24,892 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:24,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:24,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1361613494, now seen corresponding path program 1 times [2020-10-28 19:18:24,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:24,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974134774] [2020-10-28 19:18:24,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:24,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:24,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:25,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:25,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:25,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:25,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:25,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:29,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:29,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 19:18:29,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:18:29,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 19:18:29,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:29,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:29,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:29,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 19:18:29,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 19:18:29,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:30,273 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:18:30,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:30,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:30,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:30,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:30,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:30,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 19:18:30,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:30,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:30,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:30,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:30,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:30,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:30,340 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 19:18:30,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974134774] [2020-10-28 19:18:30,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:30,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:30,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422562612] [2020-10-28 19:18:30,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:30,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:30,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:30,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:30,342 INFO L87 Difference]: Start difference. First operand 29732 states and 41320 transitions. Second operand 5 states. [2020-10-28 19:18:33,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:33,146 INFO L93 Difference]: Finished difference Result 55810 states and 77670 transitions. [2020-10-28 19:18:33,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:18:33,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-28 19:18:33,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:33,183 INFO L225 Difference]: With dead ends: 55810 [2020-10-28 19:18:33,184 INFO L226 Difference]: Without dead ends: 26312 [2020-10-28 19:18:33,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:18:33,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26312 states. [2020-10-28 19:18:34,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26312 to 26312. [2020-10-28 19:18:34,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26312 states. [2020-10-28 19:18:34,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26312 states to 26312 states and 36625 transitions. [2020-10-28 19:18:34,669 INFO L78 Accepts]: Start accepts. Automaton has 26312 states and 36625 transitions. Word has length 170 [2020-10-28 19:18:34,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:34,670 INFO L481 AbstractCegarLoop]: Abstraction has 26312 states and 36625 transitions. [2020-10-28 19:18:34,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:34,670 INFO L276 IsEmpty]: Start isEmpty. Operand 26312 states and 36625 transitions. [2020-10-28 19:18:34,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-28 19:18:34,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:34,689 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] [2020-10-28 19:18:34,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 19:18:34,689 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:34,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:34,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1351686240, now seen corresponding path program 1 times [2020-10-28 19:18:34,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:34,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335631612] [2020-10-28 19:18:34,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:34,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:34,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:34,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:34,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:34,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:34,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:39,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:39,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 19:18:39,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:18:39,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 19:18:39,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:39,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:39,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:39,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 19:18:39,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 19:18:39,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:18:40,074 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:18:40,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:40,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:40,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:40,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:40,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:40,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 19:18:40,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:40,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:40,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:40,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:40,147 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 19:18:40,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335631612] [2020-10-28 19:18:40,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:40,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:40,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740871398] [2020-10-28 19:18:40,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:40,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:40,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:40,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:40,149 INFO L87 Difference]: Start difference. First operand 26312 states and 36625 transitions. Second operand 5 states. [2020-10-28 19:18:42,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:42,611 INFO L93 Difference]: Finished difference Result 44013 states and 61226 transitions. [2020-10-28 19:18:42,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:18:42,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-28 19:18:42,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:42,634 INFO L225 Difference]: With dead ends: 44013 [2020-10-28 19:18:42,635 INFO L226 Difference]: Without dead ends: 17778 [2020-10-28 19:18:42,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:18:42,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17778 states. [2020-10-28 19:18:43,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17778 to 17778. [2020-10-28 19:18:43,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17778 states. [2020-10-28 19:18:43,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17778 states to 17778 states and 24698 transitions. [2020-10-28 19:18:43,897 INFO L78 Accepts]: Start accepts. Automaton has 17778 states and 24698 transitions. Word has length 172 [2020-10-28 19:18:43,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:43,898 INFO L481 AbstractCegarLoop]: Abstraction has 17778 states and 24698 transitions. [2020-10-28 19:18:43,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:43,898 INFO L276 IsEmpty]: Start isEmpty. Operand 17778 states and 24698 transitions. [2020-10-28 19:18:43,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-28 19:18:43,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:43,910 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] [2020-10-28 19:18:43,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 19:18:43,911 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:43,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:43,911 INFO L82 PathProgramCache]: Analyzing trace with hash -809500712, now seen corresponding path program 1 times [2020-10-28 19:18:43,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:43,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024253785] [2020-10-28 19:18:43,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:43,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:44,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:44,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:44,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:44,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:44,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:44,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:48,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:48,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-28 19:18:48,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:18:48,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 19:18:48,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:48,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:48,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:48,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 19:18:48,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 19:18:48,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:49,284 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:18:49,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:49,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:49,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:49,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:49,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:49,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 19:18:49,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:49,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:49,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:49,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:49,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:49,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:49,384 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 19:18:49,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024253785] [2020-10-28 19:18:49,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:49,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:49,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220503335] [2020-10-28 19:18:49,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:49,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:49,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:49,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:49,387 INFO L87 Difference]: Start difference. First operand 17778 states and 24698 transitions. Second operand 5 states. [2020-10-28 19:18:51,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:51,693 INFO L93 Difference]: Finished difference Result 25384 states and 35298 transitions. [2020-10-28 19:18:51,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:18:51,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-10-28 19:18:51,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:51,711 INFO L225 Difference]: With dead ends: 25384 [2020-10-28 19:18:51,711 INFO L226 Difference]: Without dead ends: 15392 [2020-10-28 19:18:51,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:18:51,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15392 states. [2020-10-28 19:18:52,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15392 to 15391. [2020-10-28 19:18:52,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15391 states. [2020-10-28 19:18:52,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15391 states to 15391 states and 21365 transitions. [2020-10-28 19:18:52,540 INFO L78 Accepts]: Start accepts. Automaton has 15391 states and 21365 transitions. Word has length 176 [2020-10-28 19:18:52,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:52,540 INFO L481 AbstractCegarLoop]: Abstraction has 15391 states and 21365 transitions. [2020-10-28 19:18:52,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:52,541 INFO L276 IsEmpty]: Start isEmpty. Operand 15391 states and 21365 transitions. [2020-10-28 19:18:52,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-28 19:18:52,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:52,549 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] [2020-10-28 19:18:52,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 19:18:52,549 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:52,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:52,550 INFO L82 PathProgramCache]: Analyzing trace with hash 841170010, now seen corresponding path program 1 times [2020-10-28 19:18:52,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:52,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095965297] [2020-10-28 19:18:52,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:52,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:52,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:52,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:52,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:52,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:52,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:56,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:56,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:57,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:57,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 19:18:57,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 19:18:57,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 19:18:57,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:57,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:57,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:57,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-28 19:18:57,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 19:18:57,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:57,935 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:18:57,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:57,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:57,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:57,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:57,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:57,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 19:18:57,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:57,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:57,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:57,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:57,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:57,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:57,982 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 19:18:57,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095965297] [2020-10-28 19:18:57,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:57,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:57,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325498182] [2020-10-28 19:18:57,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:57,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:57,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:57,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:57,985 INFO L87 Difference]: Start difference. First operand 15391 states and 21365 transitions. Second operand 5 states. [2020-10-28 19:19:01,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:01,446 INFO L93 Difference]: Finished difference Result 32351 states and 46924 transitions. [2020-10-28 19:19:01,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:19:01,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-10-28 19:19:01,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:01,476 INFO L225 Difference]: With dead ends: 32351 [2020-10-28 19:19:01,477 INFO L226 Difference]: Without dead ends: 23134 [2020-10-28 19:19:01,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:19:01,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23134 states. [2020-10-28 19:19:02,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23134 to 15391. [2020-10-28 19:19:02,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15391 states. [2020-10-28 19:19:02,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15391 states to 15391 states and 21313 transitions. [2020-10-28 19:19:02,524 INFO L78 Accepts]: Start accepts. Automaton has 15391 states and 21313 transitions. Word has length 178 [2020-10-28 19:19:02,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:19:02,525 INFO L481 AbstractCegarLoop]: Abstraction has 15391 states and 21313 transitions. [2020-10-28 19:19:02,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:19:02,525 INFO L276 IsEmpty]: Start isEmpty. Operand 15391 states and 21313 transitions. [2020-10-28 19:19:02,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-28 19:19:02,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:19:02,533 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] [2020-10-28 19:19:02,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 19:19:02,533 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:19:02,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:19:02,533 INFO L82 PathProgramCache]: Analyzing trace with hash -322009795, now seen corresponding path program 1 times [2020-10-28 19:19:02,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:19:02,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124639298] [2020-10-28 19:19:02,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:19:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:02,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:02,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:02,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:02,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:02,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:03,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:07,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:07,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:07,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 19:19:07,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:19:07,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 19:19:07,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:07,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:07,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:19:07,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-28 19:19:07,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 19:19:07,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:08,022 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:19:08,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:08,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:08,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:08,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:08,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:08,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:19:08,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:08,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:08,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:08,065 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 19:19:08,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124639298] [2020-10-28 19:19:08,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:08,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:19:08,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715537573] [2020-10-28 19:19:08,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:19:08,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:08,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:19:08,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:19:08,067 INFO L87 Difference]: Start difference. First operand 15391 states and 21313 transitions. Second operand 5 states. [2020-10-28 19:19:11,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:11,904 INFO L93 Difference]: Finished difference Result 40845 states and 57578 transitions. [2020-10-28 19:19:11,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:19:11,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-10-28 19:19:11,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:11,943 INFO L225 Difference]: With dead ends: 40845 [2020-10-28 19:19:11,943 INFO L226 Difference]: Without dead ends: 29126 [2020-10-28 19:19:11,963 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 19:19:11,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29126 states. [2020-10-28 19:19:13,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29126 to 17413. [2020-10-28 19:19:13,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17413 states. [2020-10-28 19:19:13,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17413 states to 17413 states and 23639 transitions. [2020-10-28 19:19:13,114 INFO L78 Accepts]: Start accepts. Automaton has 17413 states and 23639 transitions. Word has length 178 [2020-10-28 19:19:13,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:19:13,114 INFO L481 AbstractCegarLoop]: Abstraction has 17413 states and 23639 transitions. [2020-10-28 19:19:13,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:19:13,114 INFO L276 IsEmpty]: Start isEmpty. Operand 17413 states and 23639 transitions. [2020-10-28 19:19:13,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-28 19:19:13,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:19:13,128 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] [2020-10-28 19:19:13,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 19:19:13,129 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:19:13,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:19:13,129 INFO L82 PathProgramCache]: Analyzing trace with hash -956732049, now seen corresponding path program 1 times [2020-10-28 19:19:13,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:19:13,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111396574] [2020-10-28 19:19:13,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:19:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:13,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:13,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:13,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:13,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:13,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:17,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:18,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:18,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 19:19:18,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:19:18,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 19:19:18,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:18,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:18,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:19:18,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 19:19:18,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 19:19:18,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:18,591 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:19:18,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:18,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:18,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:18,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:18,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:18,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 19:19:18,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:18,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:18,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:18,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:18,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:18,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:18,635 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 19:19:18,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111396574] [2020-10-28 19:19:18,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:18,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:19:18,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933697842] [2020-10-28 19:19:18,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:19:18,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:18,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:19:18,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:19:18,637 INFO L87 Difference]: Start difference. First operand 17413 states and 23639 transitions. Second operand 5 states. [2020-10-28 19:19:22,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:22,041 INFO L93 Difference]: Finished difference Result 32913 states and 47292 transitions. [2020-10-28 19:19:22,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:19:22,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-10-28 19:19:22,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:22,071 INFO L225 Difference]: With dead ends: 32913 [2020-10-28 19:19:22,071 INFO L226 Difference]: Without dead ends: 24476 [2020-10-28 19:19:22,086 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 19:19:22,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24476 states. [2020-10-28 19:19:23,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24476 to 17413. [2020-10-28 19:19:23,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17413 states. [2020-10-28 19:19:23,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17413 states to 17413 states and 23587 transitions. [2020-10-28 19:19:23,255 INFO L78 Accepts]: Start accepts. Automaton has 17413 states and 23587 transitions. Word has length 178 [2020-10-28 19:19:23,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:19:23,255 INFO L481 AbstractCegarLoop]: Abstraction has 17413 states and 23587 transitions. [2020-10-28 19:19:23,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:19:23,255 INFO L276 IsEmpty]: Start isEmpty. Operand 17413 states and 23587 transitions. [2020-10-28 19:19:23,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-28 19:19:23,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:19:23,268 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] [2020-10-28 19:19:23,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 19:19:23,268 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:19:23,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:19:23,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1559868121, now seen corresponding path program 1 times [2020-10-28 19:19:23,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:19:23,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471452015] [2020-10-28 19:19:23,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:19:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:23,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:23,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:23,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:24,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:24,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:28,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:28,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 19:19:28,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:19:28,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 19:19:28,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:28,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:28,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:19:28,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 19:19:28,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 19:19:28,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:28,624 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:19:28,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:28,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:28,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:28,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:28,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:28,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:19:28,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:28,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:28,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:28,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:28,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:28,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:28,668 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 19:19:28,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471452015] [2020-10-28 19:19:28,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:28,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:19:28,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042192792] [2020-10-28 19:19:28,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:19:28,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:28,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:19:28,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:19:28,670 INFO L87 Difference]: Start difference. First operand 17413 states and 23587 transitions. Second operand 4 states. [2020-10-28 19:19:31,873 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 19:19:32,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:32,600 INFO L93 Difference]: Finished difference Result 40329 states and 55847 transitions. [2020-10-28 19:19:32,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:19:32,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2020-10-28 19:19:32,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:32,638 INFO L225 Difference]: With dead ends: 40329 [2020-10-28 19:19:32,638 INFO L226 Difference]: Without dead ends: 24224 [2020-10-28 19:19:32,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:19:32,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24224 states. [2020-10-28 19:19:34,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24224 to 22335. [2020-10-28 19:19:34,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22335 states. [2020-10-28 19:19:34,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22335 states to 22335 states and 31289 transitions. [2020-10-28 19:19:34,251 INFO L78 Accepts]: Start accepts. Automaton has 22335 states and 31289 transitions. Word has length 178 [2020-10-28 19:19:34,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:19:34,251 INFO L481 AbstractCegarLoop]: Abstraction has 22335 states and 31289 transitions. [2020-10-28 19:19:34,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:19:34,252 INFO L276 IsEmpty]: Start isEmpty. Operand 22335 states and 31289 transitions. [2020-10-28 19:19:34,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-28 19:19:34,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:19:34,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:19:34,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 19:19:34,261 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:19:34,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:19:34,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1578247313, now seen corresponding path program 1 times [2020-10-28 19:19:34,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:19:34,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297224082] [2020-10-28 19:19:34,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:19:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:34,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:34,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:34,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:34,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:39,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:39,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 19:19:39,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 19:19:39,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 19:19:39,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:39,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:39,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:19:39,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 19:19:39,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 19:19:39,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:39,605 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:19:39,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:39,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:39,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:39,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:39,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:39,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:19:39,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:39,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:39,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:39,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:39,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:39,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:39,650 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 19:19:39,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297224082] [2020-10-28 19:19:39,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:39,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:19:39,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877173629] [2020-10-28 19:19:39,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:19:39,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:39,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:19:39,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:19:39,652 INFO L87 Difference]: Start difference. First operand 22335 states and 31289 transitions. Second operand 4 states. [2020-10-28 19:19:43,215 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 19:19:44,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:44,510 INFO L93 Difference]: Finished difference Result 54762 states and 78473 transitions. [2020-10-28 19:19:44,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:19:44,510 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 181 [2020-10-28 19:19:44,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:44,565 INFO L225 Difference]: With dead ends: 54762 [2020-10-28 19:19:44,566 INFO L226 Difference]: Without dead ends: 33515 [2020-10-28 19:19:44,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:19:44,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33515 states. [2020-10-28 19:19:46,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33515 to 31041. [2020-10-28 19:19:46,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31041 states. [2020-10-28 19:19:46,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31041 states to 31041 states and 44935 transitions. [2020-10-28 19:19:46,977 INFO L78 Accepts]: Start accepts. Automaton has 31041 states and 44935 transitions. Word has length 181 [2020-10-28 19:19:46,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:19:46,977 INFO L481 AbstractCegarLoop]: Abstraction has 31041 states and 44935 transitions. [2020-10-28 19:19:46,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:19:46,978 INFO L276 IsEmpty]: Start isEmpty. Operand 31041 states and 44935 transitions. [2020-10-28 19:19:46,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-28 19:19:46,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:19:46,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:19:46,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 19:19:46,987 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:19:46,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:19:46,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1796934561, now seen corresponding path program 1 times [2020-10-28 19:19:46,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:19:46,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028260398] [2020-10-28 19:19:46,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:19:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:47,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:47,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:47,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:47,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:47,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:47,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:48,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:48,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:50,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:52,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:52,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-28 19:19:52,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:19:52,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-28 19:19:52,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:52,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:19:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 19:19:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 19:19:52,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:52,411 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:19:52,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:52,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:52,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:52,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:52,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:52,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:19:52,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:52,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:52,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:52,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:52,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:52,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:52,463 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 19:19:52,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028260398] [2020-10-28 19:19:52,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:52,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:19:52,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770397668] [2020-10-28 19:19:52,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:19:52,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:52,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:19:52,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:19:52,465 INFO L87 Difference]: Start difference. First operand 31041 states and 44935 transitions. Second operand 4 states. [2020-10-28 19:19:56,668 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 19:19:58,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:58,843 INFO L93 Difference]: Finished difference Result 81465 states and 119753 transitions. [2020-10-28 19:19:58,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:19:58,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 184 [2020-10-28 19:19:58,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:58,915 INFO L225 Difference]: With dead ends: 81465 [2020-10-28 19:19:58,915 INFO L226 Difference]: Without dead ends: 51292 [2020-10-28 19:19:58,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:19:58,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51292 states. [2020-10-28 19:20:02,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51292 to 45969. [2020-10-28 19:20:02,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45969 states. [2020-10-28 19:20:02,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45969 states to 45969 states and 68229 transitions. [2020-10-28 19:20:02,671 INFO L78 Accepts]: Start accepts. Automaton has 45969 states and 68229 transitions. Word has length 184 [2020-10-28 19:20:02,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:20:02,671 INFO L481 AbstractCegarLoop]: Abstraction has 45969 states and 68229 transitions. [2020-10-28 19:20:02,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:20:02,671 INFO L276 IsEmpty]: Start isEmpty. Operand 45969 states and 68229 transitions. [2020-10-28 19:20:02,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-28 19:20:02,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:20:02,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:20:02,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 19:20:02,682 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:20:02,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:20:02,683 INFO L82 PathProgramCache]: Analyzing trace with hash -101334457, now seen corresponding path program 1 times [2020-10-28 19:20:02,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:20:02,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824886945] [2020-10-28 19:20:02,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:20:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:20:02,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:02,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:03,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:03,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:03,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:05,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:07,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:20:07,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-28 19:20:07,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:20:07,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 19:20:07,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:20:07,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:20:07,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 19:20:07,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 19:20:07,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 19:20:07,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:20:08,075 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:20:08,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:20:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:20:08,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:08,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:20:08,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:20:08,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:20:08,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 19:20:08,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:20:08,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:20:08,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:20:08,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:20:08,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 19:20:08,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:20:08,146 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 19:20:08,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824886945] [2020-10-28 19:20:08,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:20:08,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:20:08,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111265503] [2020-10-28 19:20:08,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 19:20:08,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:20:08,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 19:20:08,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:20:08,148 INFO L87 Difference]: Start difference. First operand 45969 states and 68229 transitions. Second operand 6 states. [2020-10-28 19:20:08,498 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-28 19:20:11,129 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:20:16,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:20:16,661 INFO L93 Difference]: Finished difference Result 110516 states and 165307 transitions. [2020-10-28 19:20:16,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 19:20:16,661 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2020-10-28 19:20:16,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:20:16,749 INFO L225 Difference]: With dead ends: 110516 [2020-10-28 19:20:16,749 INFO L226 Difference]: Without dead ends: 65599 [2020-10-28 19:20:16,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-28 19:20:16,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65599 states. [2020-10-28 19:20:22,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65599 to 65596. [2020-10-28 19:20:22,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65596 states. [2020-10-28 19:20:22,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65596 states to 65596 states and 97753 transitions. [2020-10-28 19:20:22,774 INFO L78 Accepts]: Start accepts. Automaton has 65596 states and 97753 transitions. Word has length 187 [2020-10-28 19:20:22,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:20:22,775 INFO L481 AbstractCegarLoop]: Abstraction has 65596 states and 97753 transitions. [2020-10-28 19:20:22,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 19:20:22,775 INFO L276 IsEmpty]: Start isEmpty. Operand 65596 states and 97753 transitions. [2020-10-28 19:20:22,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-28 19:20:22,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:20:22,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:20:22,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 19:20:22,786 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:20:22,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:20:22,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1833279020, now seen corresponding path program 1 times [2020-10-28 19:20:22,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:20:22,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291223088] [2020-10-28 19:20:22,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:20:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:20:22,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:22,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:23,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:24,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:25,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:26,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:27,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking...