/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/systemc/toy2.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 19:56:53,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 19:56:53,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 19:56:53,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 19:56:53,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 19:56:53,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 19:56:53,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 19:56:53,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 19:56:53,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 19:56:53,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 19:56:53,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 19:56:53,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 19:56:53,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 19:56:53,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 19:56:53,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 19:56:53,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 19:56:53,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 19:56:53,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 19:56:53,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 19:56:53,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 19:56:53,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 19:56:53,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 19:56:53,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 19:56:53,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 19:56:53,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 19:56:53,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 19:56:53,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 19:56:53,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 19:56:53,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 19:56:53,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 19:56:53,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 19:56:53,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 19:56:53,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 19:56:53,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 19:56:53,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 19:56:53,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 19:56:53,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 19:56:53,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 19:56:53,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 19:56:53,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 19:56:53,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 19:56:53,482 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 19:56:53,509 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 19:56:53,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 19:56:53,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 19:56:53,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 19:56:53,511 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 19:56:53,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 19:56:53,511 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 19:56:53,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 19:56:53,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 19:56:53,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 19:56:53,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 19:56:53,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 19:56:53,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 19:56:53,513 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 19:56:53,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 19:56:53,514 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 19:56:53,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 19:56:53,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 19:56:53,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 19:56:53,515 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 19:56:53,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 19:56:53,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:56:53,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 19:56:53,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 19:56:53,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 19:56:53,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 19:56:53,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 19:56:53,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 19:56:53,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 19:56:53,518 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 19:56:53,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 19:56:53,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 19:56:53,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 19:56:53,928 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 19:56:53,929 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 19:56:53,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/toy2.cil.c [2020-10-28 19:56:54,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/777f7f839/a856773597054f7eb23b4f0b9029e8f1/FLAGcd743ecd5 [2020-10-28 19:56:54,638 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 19:56:54,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/toy2.cil.c [2020-10-28 19:56:54,668 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/777f7f839/a856773597054f7eb23b4f0b9029e8f1/FLAGcd743ecd5 [2020-10-28 19:56:54,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/777f7f839/a856773597054f7eb23b4f0b9029e8f1 [2020-10-28 19:56:54,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 19:56:54,964 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 19:56:54,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 19:56:54,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 19:56:54,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 19:56:54,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:56:54" (1/1) ... [2020-10-28 19:56:54,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fc4ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:56:54, skipping insertion in model container [2020-10-28 19:56:54,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:56:54" (1/1) ... [2020-10-28 19:56:54,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 19:56:55,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 19:56:55,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:56:55,320 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 19:56:55,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:56:55,425 INFO L208 MainTranslator]: Completed translation [2020-10-28 19:56:55,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:56:55 WrapperNode [2020-10-28 19:56:55,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 19:56:55,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 19:56:55,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 19:56:55,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 19:56:55,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:56:55" (1/1) ... [2020-10-28 19:56:55,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:56:55" (1/1) ... [2020-10-28 19:56:55,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:56:55" (1/1) ... [2020-10-28 19:56:55,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:56:55" (1/1) ... [2020-10-28 19:56:55,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:56:55" (1/1) ... [2020-10-28 19:56:55,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:56:55" (1/1) ... [2020-10-28 19:56:55,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:56:55" (1/1) ... [2020-10-28 19:56:55,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 19:56:55,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 19:56:55,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 19:56:55,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 19:56:55,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:56:55" (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 19:56:55,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 19:56:55,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 19:56:55,615 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 19:56:55,615 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-28 19:56:55,615 INFO L138 BoogieDeclarations]: Found implementation of procedure write_loop [2020-10-28 19:56:55,615 INFO L138 BoogieDeclarations]: Found implementation of procedure compute1 [2020-10-28 19:56:55,615 INFO L138 BoogieDeclarations]: Found implementation of procedure compute2 [2020-10-28 19:56:55,616 INFO L138 BoogieDeclarations]: Found implementation of procedure write_back [2020-10-28 19:56:55,616 INFO L138 BoogieDeclarations]: Found implementation of procedure read [2020-10-28 19:56:55,616 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-28 19:56:55,616 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-28 19:56:55,616 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 19:56:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 19:56:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 19:56:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 19:56:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 19:56:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 19:56:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-28 19:56:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure write_loop [2020-10-28 19:56:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure compute1 [2020-10-28 19:56:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure compute2 [2020-10-28 19:56:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure write_back [2020-10-28 19:56:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 19:56:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-28 19:56:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-28 19:56:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 19:56:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 19:56:55,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 19:56:55,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 19:56:55,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 19:56:55,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 19:56:55,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 19:56:56,292 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 19:56:56,293 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-28 19:56:56,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:56:56 BoogieIcfgContainer [2020-10-28 19:56:56,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 19:56:56,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 19:56:56,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 19:56:56,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 19:56:56,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 07:56:54" (1/3) ... [2020-10-28 19:56:56,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c43e095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:56:56, skipping insertion in model container [2020-10-28 19:56:56,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:56:55" (2/3) ... [2020-10-28 19:56:56,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c43e095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:56:56, skipping insertion in model container [2020-10-28 19:56:56,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:56:56" (3/3) ... [2020-10-28 19:56:56,304 INFO L111 eAbstractionObserver]: Analyzing ICFG toy2.cil.c [2020-10-28 19:56:56,316 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 19:56:56,321 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 19:56:56,339 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 19:56:56,372 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 19:56:56,372 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 19:56:56,372 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 19:56:56,372 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 19:56:56,373 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 19:56:56,373 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 19:56:56,373 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 19:56:56,373 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 19:56:56,394 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-10-28 19:56:56,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 19:56:56,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:56:56,404 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] [2020-10-28 19:56:56,405 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:56:56,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:56:56,411 INFO L82 PathProgramCache]: Analyzing trace with hash 184578931, now seen corresponding path program 1 times [2020-10-28 19:56:56,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:56:56,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846838918] [2020-10-28 19:56:56,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:56:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:56:56,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:56:56,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:56:57,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:56:57,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:56:57,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:56:57,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:56:57,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:56:57,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:56:57,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:56:58,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:56:58,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:56:58,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:00,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:00,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 19:57:00,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:57:00,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3829 [2020-10-28 19:57:00,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:00,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:00,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:57:00,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:57:00,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 19:57:00,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 19:57:00,748 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:57:00,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:57:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:00,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:00,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:00,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:57:00,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:00,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:57:00,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:00,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:00,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:57:00,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:57:00,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:57:00,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:00,787 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 19:57:00,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846838918] [2020-10-28 19:57:00,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:57:00,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:57:00,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712811333] [2020-10-28 19:57:00,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:57:00,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:57:00,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:57:00,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:57:00,812 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 4 states. [2020-10-28 19:57:01,006 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 19:57:01,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:57:01,742 INFO L93 Difference]: Finished difference Result 329 states and 565 transitions. [2020-10-28 19:57:01,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:57:01,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-28 19:57:01,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:57:01,757 INFO L225 Difference]: With dead ends: 329 [2020-10-28 19:57:01,757 INFO L226 Difference]: Without dead ends: 176 [2020-10-28 19:57:01,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:57:01,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-28 19:57:01,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 150. [2020-10-28 19:57:01,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-28 19:57:01,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 242 transitions. [2020-10-28 19:57:01,827 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 242 transitions. Word has length 47 [2020-10-28 19:57:01,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:57:01,828 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 242 transitions. [2020-10-28 19:57:01,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:57:01,828 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 242 transitions. [2020-10-28 19:57:01,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 19:57:01,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:57:01,831 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] [2020-10-28 19:57:01,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 19:57:01,831 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:57:01,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:57:01,832 INFO L82 PathProgramCache]: Analyzing trace with hash -2059404367, now seen corresponding path program 1 times [2020-10-28 19:57:01,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:57:01,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51964603] [2020-10-28 19:57:01,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:57:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:01,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:01,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:01,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:02,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:02,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:02,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:02,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:02,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:02,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:02,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:02,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:04,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:04,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 19:57:04,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 19:57:04,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2926 [2020-10-28 19:57:04,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:04,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:04,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:57:04,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 19:57:04,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 19:57:04,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:57:04,933 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:57:04,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:57:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:04,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:04,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:04,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:57:04,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:04,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:57:04,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:04,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:04,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:57:04,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:57:04,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:57:04,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:57:04,963 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 19:57:04,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51964603] [2020-10-28 19:57:04,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:57:04,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:57:04,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815059643] [2020-10-28 19:57:04,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:57:04,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:57:04,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:57:04,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:57:04,967 INFO L87 Difference]: Start difference. First operand 150 states and 242 transitions. Second operand 4 states. [2020-10-28 19:57:05,702 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 19:57:06,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:57:06,103 INFO L93 Difference]: Finished difference Result 429 states and 697 transitions. [2020-10-28 19:57:06,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:57:06,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-28 19:57:06,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:57:06,107 INFO L225 Difference]: With dead ends: 429 [2020-10-28 19:57:06,107 INFO L226 Difference]: Without dead ends: 302 [2020-10-28 19:57:06,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:57:06,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-28 19:57:06,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 265. [2020-10-28 19:57:06,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-28 19:57:06,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 431 transitions. [2020-10-28 19:57:06,178 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 431 transitions. Word has length 47 [2020-10-28 19:57:06,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:57:06,179 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 431 transitions. [2020-10-28 19:57:06,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:57:06,179 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 431 transitions. [2020-10-28 19:57:06,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 19:57:06,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:57:06,182 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] [2020-10-28 19:57:06,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 19:57:06,183 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:57:06,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:57:06,183 INFO L82 PathProgramCache]: Analyzing trace with hash -65259661, now seen corresponding path program 1 times [2020-10-28 19:57:06,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:57:06,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037014087] [2020-10-28 19:57:06,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:57:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:06,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:06,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:06,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:06,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:06,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:06,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:06,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:06,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:06,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:06,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:07,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:09,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:09,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 19:57:09,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 19:57:09,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2831 [2020-10-28 19:57:09,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:09,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:09,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:57:09,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:57:09,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 19:57:09,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:09,207 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:57:09,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:57:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:09,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:09,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:09,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:57:09,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:09,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 19:57:09,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:09,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:57:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:57:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:57:09,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:09,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:57:09,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037014087] [2020-10-28 19:57:09,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:57:09,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:57:09,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916130762] [2020-10-28 19:57:09,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:57:09,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:57:09,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:57:09,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:57:09,232 INFO L87 Difference]: Start difference. First operand 265 states and 431 transitions. Second operand 4 states. [2020-10-28 19:57:09,382 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 19:57:10,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:57:10,155 INFO L93 Difference]: Finished difference Result 549 states and 893 transitions. [2020-10-28 19:57:10,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:57:10,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-28 19:57:10,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:57:10,164 INFO L225 Difference]: With dead ends: 549 [2020-10-28 19:57:10,164 INFO L226 Difference]: Without dead ends: 297 [2020-10-28 19:57:10,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:57:10,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-28 19:57:10,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 265. [2020-10-28 19:57:10,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-28 19:57:10,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 430 transitions. [2020-10-28 19:57:10,242 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 430 transitions. Word has length 47 [2020-10-28 19:57:10,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:57:10,242 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 430 transitions. [2020-10-28 19:57:10,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:57:10,242 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 430 transitions. [2020-10-28 19:57:10,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 19:57:10,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:57:10,253 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] [2020-10-28 19:57:10,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 19:57:10,254 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:57:10,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:57:10,254 INFO L82 PathProgramCache]: Analyzing trace with hash -724791183, now seen corresponding path program 1 times [2020-10-28 19:57:10,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:57:10,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805711117] [2020-10-28 19:57:10,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:57:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:10,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:10,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:10,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:10,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:10,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:10,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:10,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:10,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:10,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:10,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:12,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:12,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 19:57:12,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:57:12,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1872 [2020-10-28 19:57:12,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:12,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:12,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 19:57:12,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:57:12,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 19:57:12,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:12,350 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:57:12,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:57:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:12,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:12,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:12,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:57:12,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:12,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:57:12,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:12,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:12,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:57:12,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:57:12,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:57:12,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:12,377 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 19:57:12,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805711117] [2020-10-28 19:57:12,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:57:12,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:57:12,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650769877] [2020-10-28 19:57:12,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:57:12,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:57:12,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:57:12,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:57:12,381 INFO L87 Difference]: Start difference. First operand 265 states and 430 transitions. Second operand 4 states. [2020-10-28 19:57:12,537 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 19:57:13,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:57:13,489 INFO L93 Difference]: Finished difference Result 646 states and 1038 transitions. [2020-10-28 19:57:13,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:57:13,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-28 19:57:13,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:57:13,500 INFO L225 Difference]: With dead ends: 646 [2020-10-28 19:57:13,500 INFO L226 Difference]: Without dead ends: 418 [2020-10-28 19:57:13,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:57:13,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-10-28 19:57:13,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 375. [2020-10-28 19:57:13,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-10-28 19:57:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 603 transitions. [2020-10-28 19:57:13,570 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 603 transitions. Word has length 47 [2020-10-28 19:57:13,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:57:13,573 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 603 transitions. [2020-10-28 19:57:13,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:57:13,573 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 603 transitions. [2020-10-28 19:57:13,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 19:57:13,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:57:13,575 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] [2020-10-28 19:57:13,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 19:57:13,575 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:57:13,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:57:13,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1294291848, now seen corresponding path program 1 times [2020-10-28 19:57:13,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:57:13,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692524162] [2020-10-28 19:57:13,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:57:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:13,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:13,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:13,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:13,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:13,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:14,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:14,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:14,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:14,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 19:57:14,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:57:14,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1160 [2020-10-28 19:57:14,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:14,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:14,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 19:57:14,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 19:57:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 19:57:14,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:14,914 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:57:14,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:57:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:14,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:14,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:14,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:57:14,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:14,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 19:57:14,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:14,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:14,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:57:14,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:57:14,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:57:14,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:14,936 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 19:57:14,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692524162] [2020-10-28 19:57:14,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:57:14,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:57:14,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538447760] [2020-10-28 19:57:14,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:57:14,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:57:14,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:57:14,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:57:14,939 INFO L87 Difference]: Start difference. First operand 375 states and 603 transitions. Second operand 4 states. [2020-10-28 19:57:15,097 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 19:57:16,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:57:16,061 INFO L93 Difference]: Finished difference Result 1107 states and 1809 transitions. [2020-10-28 19:57:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:57:16,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-28 19:57:16,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:57:16,072 INFO L225 Difference]: With dead ends: 1107 [2020-10-28 19:57:16,072 INFO L226 Difference]: Without dead ends: 756 [2020-10-28 19:57:16,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:57:16,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-10-28 19:57:16,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 697. [2020-10-28 19:57:16,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-10-28 19:57:16,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1141 transitions. [2020-10-28 19:57:16,149 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1141 transitions. Word has length 47 [2020-10-28 19:57:16,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:57:16,149 INFO L481 AbstractCegarLoop]: Abstraction has 697 states and 1141 transitions. [2020-10-28 19:57:16,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:57:16,150 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1141 transitions. [2020-10-28 19:57:16,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 19:57:16,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:57:16,152 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:16,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 19:57:16,152 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:57:16,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:57:16,152 INFO L82 PathProgramCache]: Analyzing trace with hash -451135175, now seen corresponding path program 1 times [2020-10-28 19:57:16,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:57:16,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714770724] [2020-10-28 19:57:16,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:57:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:16,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:16,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:16,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:16,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:16,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:16,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:16,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:16,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:21,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:21,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 19:57:21,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 19:57:21,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 19:57:21,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:21,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:21,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:57:21,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 19:57:21,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 19:57:21,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:21,338 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:57:21,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:57:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:21,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:21,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:21,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:57:21,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:21,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:57:21,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:21,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:57:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:57:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:57:21,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:21,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 19:57:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:21,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:21,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:21,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 19:57:21,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:21,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 19:57:21,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:21,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:21,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:57:21,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:57:21,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 19:57:21,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:21,413 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:57:21,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714770724] [2020-10-28 19:57:21,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:57:21,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:57:21,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240128856] [2020-10-28 19:57:21,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:57:21,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:57:21,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:57:21,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:57:21,419 INFO L87 Difference]: Start difference. First operand 697 states and 1141 transitions. Second operand 5 states. [2020-10-28 19:57:21,824 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 19:57:23,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:57:23,156 INFO L93 Difference]: Finished difference Result 1804 states and 2969 transitions. [2020-10-28 19:57:23,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 19:57:23,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-28 19:57:23,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:57:23,164 INFO L225 Difference]: With dead ends: 1804 [2020-10-28 19:57:23,164 INFO L226 Difference]: Without dead ends: 973 [2020-10-28 19:57:23,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:57:23,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2020-10-28 19:57:23,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 869. [2020-10-28 19:57:23,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 869 states. [2020-10-28 19:57:23,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1399 transitions. [2020-10-28 19:57:23,263 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1399 transitions. Word has length 67 [2020-10-28 19:57:23,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:57:23,263 INFO L481 AbstractCegarLoop]: Abstraction has 869 states and 1399 transitions. [2020-10-28 19:57:23,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:57:23,264 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1399 transitions. [2020-10-28 19:57:23,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 19:57:23,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:57:23,266 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:23,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 19:57:23,266 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:57:23,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:57:23,267 INFO L82 PathProgramCache]: Analyzing trace with hash 6738656, now seen corresponding path program 1 times [2020-10-28 19:57:23,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:57:23,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116805387] [2020-10-28 19:57:23,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:57:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:23,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:23,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:23,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:23,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:23,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:23,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:25,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:25,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:25,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:25,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:28,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:28,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 19:57:28,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:57:28,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 19:57:28,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:28,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:28,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 19:57:28,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 19:57:28,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 19:57:28,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:28,443 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:57:28,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:57:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:28,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:28,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:28,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:57:28,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:28,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 19:57:28,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:28,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:28,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:57:28,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:57:28,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:57:28,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:28,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 19:57:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:28,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:28,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:28,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 19:57:28,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:28,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:57:28,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:28,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:28,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 19:57:28,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 19:57:28,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 19:57:28,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:28,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 19:57:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:28,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:28,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:28,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 19:57:28,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:28,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:57:28,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:28,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:28,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:57:28,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 19:57:28,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:57:28,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:28,646 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:57:28,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116805387] [2020-10-28 19:57:28,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:57:28,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 19:57:28,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289183217] [2020-10-28 19:57:28,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 19:57:28,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:57:28,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 19:57:28,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:57:28,651 INFO L87 Difference]: Start difference. First operand 869 states and 1399 transitions. Second operand 7 states. [2020-10-28 19:57:28,848 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 19:57:31,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:57:31,038 INFO L93 Difference]: Finished difference Result 2939 states and 4962 transitions. [2020-10-28 19:57:31,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 19:57:31,039 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2020-10-28 19:57:31,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:57:31,054 INFO L225 Difference]: With dead ends: 2939 [2020-10-28 19:57:31,054 INFO L226 Difference]: Without dead ends: 2106 [2020-10-28 19:57:31,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2020-10-28 19:57:31,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2020-10-28 19:57:31,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 1750. [2020-10-28 19:57:31,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1750 states. [2020-10-28 19:57:31,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 2946 transitions. [2020-10-28 19:57:31,284 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 2946 transitions. Word has length 76 [2020-10-28 19:57:31,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:57:31,285 INFO L481 AbstractCegarLoop]: Abstraction has 1750 states and 2946 transitions. [2020-10-28 19:57:31,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 19:57:31,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 2946 transitions. [2020-10-28 19:57:31,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 19:57:31,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:57:31,289 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:31,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 19:57:31,290 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:57:31,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:57:31,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1679441182, now seen corresponding path program 1 times [2020-10-28 19:57:31,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:57:31,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681715886] [2020-10-28 19:57:31,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:57:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:31,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:31,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:31,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:31,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:31,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:32,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:32,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:32,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:32,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:32,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:36,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:36,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 19:57:36,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:57:36,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 19:57:36,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:36,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:36,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:57:36,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:57:36,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 19:57:36,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:57:36,603 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:57:36,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:57:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:36,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:36,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:36,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:57:36,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:36,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:57:36,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:36,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:36,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:57:36,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:57:36,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:57:36,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:57:36,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 19:57:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:36,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:36,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:36,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 19:57:36,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:36,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 19:57:36,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:36,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:36,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:57:36,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 19:57:36,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:57:36,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:57:36,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 19:57:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:36,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:36,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:36,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 19:57:36,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:36,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 19:57:36,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:36,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:36,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:57:36,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 19:57:36,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:57:36,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:57:36,726 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 19:57:36,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681715886] [2020-10-28 19:57:36,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:57:36,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 19:57:36,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159124320] [2020-10-28 19:57:36,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 19:57:36,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:57:36,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 19:57:36,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:57:36,736 INFO L87 Difference]: Start difference. First operand 1750 states and 2946 transitions. Second operand 6 states. [2020-10-28 19:57:36,907 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-28 19:57:38,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:57:38,396 INFO L93 Difference]: Finished difference Result 3802 states and 6360 transitions. [2020-10-28 19:57:38,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 19:57:38,397 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-10-28 19:57:38,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:57:38,413 INFO L225 Difference]: With dead ends: 3802 [2020-10-28 19:57:38,413 INFO L226 Difference]: Without dead ends: 2080 [2020-10-28 19:57:38,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-28 19:57:38,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2020-10-28 19:57:38,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 1728. [2020-10-28 19:57:38,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1728 states. [2020-10-28 19:57:38,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2906 transitions. [2020-10-28 19:57:38,625 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2906 transitions. Word has length 76 [2020-10-28 19:57:38,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:57:38,626 INFO L481 AbstractCegarLoop]: Abstraction has 1728 states and 2906 transitions. [2020-10-28 19:57:38,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 19:57:38,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2906 transitions. [2020-10-28 19:57:38,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 19:57:38,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:57:38,630 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:38,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 19:57:38,630 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:57:38,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:57:38,631 INFO L82 PathProgramCache]: Analyzing trace with hash -295395190, now seen corresponding path program 1 times [2020-10-28 19:57:38,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:57:38,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84429033] [2020-10-28 19:57:38,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:57:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:38,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:38,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:38,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:38,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:38,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:39,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:39,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:39,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:39,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:43,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:43,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 19:57:43,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:57:43,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 19:57:43,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:43,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 19:57:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 19:57:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 19:57:43,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:43,812 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:57:43,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:57:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:43,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:43,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:43,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:57:43,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:43,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:57:43,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:43,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:43,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:57:43,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:57:43,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:57:43,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:43,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 19:57:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:43,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:43,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:43,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 19:57:43,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:43,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 19:57:43,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:43,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:43,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:57:43,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:57:43,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 19:57:43,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:43,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 19:57:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:43,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:43,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:43,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 19:57:43,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:43,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:57:43,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:43,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:43,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:57:43,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 19:57:43,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:57:43,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:43,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:57:43,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84429033] [2020-10-28 19:57:43,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:57:43,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 19:57:43,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581749569] [2020-10-28 19:57:43,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 19:57:43,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:57:43,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 19:57:43,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:57:43,905 INFO L87 Difference]: Start difference. First operand 1728 states and 2906 transitions. Second operand 6 states. [2020-10-28 19:57:44,062 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 19:57:46,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:57:46,119 INFO L93 Difference]: Finished difference Result 5277 states and 9145 transitions. [2020-10-28 19:57:46,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 19:57:46,119 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-10-28 19:57:46,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:57:46,145 INFO L225 Difference]: With dead ends: 5277 [2020-10-28 19:57:46,146 INFO L226 Difference]: Without dead ends: 3585 [2020-10-28 19:57:46,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-28 19:57:46,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3585 states. [2020-10-28 19:57:46,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3585 to 3039. [2020-10-28 19:57:46,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3039 states. [2020-10-28 19:57:46,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3039 states to 3039 states and 5158 transitions. [2020-10-28 19:57:46,519 INFO L78 Accepts]: Start accepts. Automaton has 3039 states and 5158 transitions. Word has length 77 [2020-10-28 19:57:46,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:57:46,519 INFO L481 AbstractCegarLoop]: Abstraction has 3039 states and 5158 transitions. [2020-10-28 19:57:46,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 19:57:46,520 INFO L276 IsEmpty]: Start isEmpty. Operand 3039 states and 5158 transitions. [2020-10-28 19:57:46,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 19:57:46,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:57:46,532 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:46,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 19:57:46,532 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:57:46,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:57:46,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1981575028, now seen corresponding path program 1 times [2020-10-28 19:57:46,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:57:46,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650521677] [2020-10-28 19:57:46,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:57:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:46,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:46,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:46,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:46,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:46,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:46,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:46,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:46,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:46,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:49,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:49,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 19:57:49,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:57:49,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2909 [2020-10-28 19:57:49,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:49,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:49,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:57:49,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:57:49,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 19:57:49,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:49,620 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:57:49,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:57:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:49,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:49,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:49,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:57:49,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:49,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:57:49,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:49,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:49,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:57:49,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:57:49,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:57:49,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:49,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 19:57:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:49,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:49,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:49,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 19:57:49,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:49,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:57:49,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:49,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:49,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:57:49,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 19:57:49,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:57:49,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:49,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 19:57:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:49,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:49,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:49,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 19:57:49,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:49,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:57:49,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:49,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:49,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:57:49,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 19:57:49,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:57:49,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:49,705 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 19:57:49,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650521677] [2020-10-28 19:57:49,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:57:49,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 19:57:49,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138686677] [2020-10-28 19:57:49,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 19:57:49,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:57:49,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 19:57:49,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:57:49,707 INFO L87 Difference]: Start difference. First operand 3039 states and 5158 transitions. Second operand 6 states. [2020-10-28 19:57:49,863 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 19:57:51,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:57:51,219 INFO L93 Difference]: Finished difference Result 6569 states and 11066 transitions. [2020-10-28 19:57:51,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 19:57:51,223 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-10-28 19:57:51,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:57:51,247 INFO L225 Difference]: With dead ends: 6569 [2020-10-28 19:57:51,248 INFO L226 Difference]: Without dead ends: 3560 [2020-10-28 19:57:51,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-28 19:57:51,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3560 states. [2020-10-28 19:57:51,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3560 to 3018. [2020-10-28 19:57:51,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3018 states. [2020-10-28 19:57:51,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3018 states to 3018 states and 5120 transitions. [2020-10-28 19:57:51,666 INFO L78 Accepts]: Start accepts. Automaton has 3018 states and 5120 transitions. Word has length 77 [2020-10-28 19:57:51,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:57:51,667 INFO L481 AbstractCegarLoop]: Abstraction has 3018 states and 5120 transitions. [2020-10-28 19:57:51,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 19:57:51,667 INFO L276 IsEmpty]: Start isEmpty. Operand 3018 states and 5120 transitions. [2020-10-28 19:57:51,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 19:57:51,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:57:51,671 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:51,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 19:57:51,672 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:57:51,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:57:51,673 INFO L82 PathProgramCache]: Analyzing trace with hash 2047992481, now seen corresponding path program 1 times [2020-10-28 19:57:51,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:57:51,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047547552] [2020-10-28 19:57:51,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:57:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:51,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:51,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:51,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:52,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:52,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:52,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:52,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:52,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:53,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:53,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 19:57:53,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 19:57:53,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1943 [2020-10-28 19:57:53,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:53,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:53,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 19:57:53,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 19:57:53,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 19:57:53,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:53,786 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:57:53,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:57:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:53,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:53,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:53,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:57:53,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:53,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 19:57:53,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:53,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:53,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:57:53,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:57:53,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:57:53,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:53,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 19:57:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:53,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:53,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:53,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 19:57:53,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:53,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 19:57:53,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:53,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:53,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 19:57:53,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 19:57:53,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 19:57:53,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:53,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 19:57:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:53,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:53,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:53,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 19:57:53,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:53,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:57:53,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:53,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:53,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:57:53,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 19:57:53,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:57:53,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:53,951 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:57:53,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047547552] [2020-10-28 19:57:53,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:57:53,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 19:57:53,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661527028] [2020-10-28 19:57:53,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 19:57:53,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:57:53,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 19:57:53,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:57:53,953 INFO L87 Difference]: Start difference. First operand 3018 states and 5120 transitions. Second operand 7 states. [2020-10-28 19:57:54,115 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 19:57:56,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:57:56,456 INFO L93 Difference]: Finished difference Result 10112 states and 17980 transitions. [2020-10-28 19:57:56,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 19:57:56,457 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-10-28 19:57:56,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:57:56,508 INFO L225 Difference]: With dead ends: 10112 [2020-10-28 19:57:56,509 INFO L226 Difference]: Without dead ends: 7130 [2020-10-28 19:57:56,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2020-10-28 19:57:56,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7130 states. [2020-10-28 19:57:57,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7130 to 5932. [2020-10-28 19:57:57,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5932 states. [2020-10-28 19:57:57,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5932 states to 5932 states and 10372 transitions. [2020-10-28 19:57:57,266 INFO L78 Accepts]: Start accepts. Automaton has 5932 states and 10372 transitions. Word has length 78 [2020-10-28 19:57:57,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:57:57,267 INFO L481 AbstractCegarLoop]: Abstraction has 5932 states and 10372 transitions. [2020-10-28 19:57:57,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 19:57:57,268 INFO L276 IsEmpty]: Start isEmpty. Operand 5932 states and 10372 transitions. [2020-10-28 19:57:57,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 19:57:57,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:57:57,273 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:57,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 19:57:57,273 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:57:57,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:57:57,274 INFO L82 PathProgramCache]: Analyzing trace with hash -2109742100, now seen corresponding path program 1 times [2020-10-28 19:57:57,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:57:57,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745661216] [2020-10-28 19:57:57,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:57:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:57,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:57,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:57,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:57,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:57,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:57,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:57,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:58,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:58,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 19:57:58,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:57:58,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1704 [2020-10-28 19:57:58,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:58,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:58,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 19:57:58,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 19:57:58,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 19:57:58,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:59,153 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:57:59,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:57:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:59,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:59,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:59,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:57:59,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:59,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 19:57:59,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:59,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:59,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:57:59,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:57:59,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:57:59,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:59,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 19:57:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:59,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:59,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:59,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 19:57:59,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:59,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 19:57:59,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:59,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:59,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 19:57:59,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 19:57:59,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 19:57:59,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:59,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 19:57:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:57:59,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:57:59,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:57:59,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 19:57:59,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:57:59,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:57:59,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:57:59,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:57:59,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:57:59,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 19:57:59,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:57:59,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:57:59,265 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:57:59,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745661216] [2020-10-28 19:57:59,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:57:59,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 19:57:59,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341318460] [2020-10-28 19:57:59,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 19:57:59,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:57:59,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 19:57:59,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 19:57:59,267 INFO L87 Difference]: Start difference. First operand 5932 states and 10372 transitions. Second operand 8 states. [2020-10-28 19:57:59,436 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 19:58:00,782 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 19:58:03,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:58:03,462 INFO L93 Difference]: Finished difference Result 20830 states and 38725 transitions. [2020-10-28 19:58:03,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 19:58:03,463 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-10-28 19:58:03,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:58:03,541 INFO L225 Difference]: With dead ends: 20830 [2020-10-28 19:58:03,541 INFO L226 Difference]: Without dead ends: 12603 [2020-10-28 19:58:03,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-28 19:58:03,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12603 states. [2020-10-28 19:58:04,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12603 to 10405. [2020-10-28 19:58:04,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10405 states. [2020-10-28 19:58:05,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10405 states to 10405 states and 18429 transitions. [2020-10-28 19:58:05,009 INFO L78 Accepts]: Start accepts. Automaton has 10405 states and 18429 transitions. Word has length 79 [2020-10-28 19:58:05,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:58:05,010 INFO L481 AbstractCegarLoop]: Abstraction has 10405 states and 18429 transitions. [2020-10-28 19:58:05,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 19:58:05,010 INFO L276 IsEmpty]: Start isEmpty. Operand 10405 states and 18429 transitions. [2020-10-28 19:58:05,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 19:58:05,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:58:05,018 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:05,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 19:58:05,019 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:58:05,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:58:05,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1023717847, now seen corresponding path program 1 times [2020-10-28 19:58:05,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:58:05,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835811039] [2020-10-28 19:58:05,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:58:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:05,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:05,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:05,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:05,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:05,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:05,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:06,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:06,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 19:58:06,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:58:06,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1018 [2020-10-28 19:58:06,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:06,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:06,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:58:06,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 19:58:06,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 19:58:06,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:06,206 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:58:06,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:58:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:06,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:06,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:06,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:58:06,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:06,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 19:58:06,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:06,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:06,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:58:06,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:58:06,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:58:06,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:06,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 19:58:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:06,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:06,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:06,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:58:06,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:06,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:58:06,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:06,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:06,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:58:06,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:58:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:58:06,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:06,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 19:58:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:06,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:06,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:06,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 19:58:06,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:06,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 19:58:06,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:06,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:06,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:58:06,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:58:06,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 19:58:06,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:06,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 19:58:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:06,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:06,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:06,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 19:58:06,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:06,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 19:58:06,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:06,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:58:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:58:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 19:58:06,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:06,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 19:58:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:06,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:06,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:06,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 19:58:06,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:06,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:58:06,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:06,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:06,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:58:06,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 19:58:06,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:58:06,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:06,303 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 19:58:06,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835811039] [2020-10-28 19:58:06,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 19:58:06,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 19:58:06,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651392312] [2020-10-28 19:58:06,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 19:58:06,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:58:06,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 19:58:06,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:58:06,305 INFO L87 Difference]: Start difference. First operand 10405 states and 18429 transitions. Second operand 6 states. [2020-10-28 19:58:06,563 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 19:58:09,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:58:09,103 INFO L93 Difference]: Finished difference Result 24406 states and 43636 transitions. [2020-10-28 19:58:09,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 19:58:09,103 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-28 19:58:09,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:58:09,200 INFO L225 Difference]: With dead ends: 24406 [2020-10-28 19:58:09,200 INFO L226 Difference]: Without dead ends: 14031 [2020-10-28 19:58:09,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-28 19:58:09,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14031 states. [2020-10-28 19:58:10,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14031 to 11160. [2020-10-28 19:58:10,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11160 states. [2020-10-28 19:58:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11160 states to 11160 states and 18518 transitions. [2020-10-28 19:58:10,730 INFO L78 Accepts]: Start accepts. Automaton has 11160 states and 18518 transitions. Word has length 104 [2020-10-28 19:58:10,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:58:10,730 INFO L481 AbstractCegarLoop]: Abstraction has 11160 states and 18518 transitions. [2020-10-28 19:58:10,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 19:58:10,731 INFO L276 IsEmpty]: Start isEmpty. Operand 11160 states and 18518 transitions. [2020-10-28 19:58:10,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 19:58:10,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:58:10,829 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:10,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 19:58:10,830 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:58:10,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:58:10,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1155493243, now seen corresponding path program 1 times [2020-10-28 19:58:10,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:58:10,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908812252] [2020-10-28 19:58:10,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:58:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:10,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:10,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:10,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:10,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:10,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:10,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:11,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:11,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:11,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:11,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:11,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:12,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:15,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:15,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-28 19:58:15,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:58:15,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 19:58:15,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:15,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:15,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:58:15,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 19:58:15,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 19:58:15,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:16,005 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:58:16,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:58:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:16,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:16,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:16,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:58:16,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:16,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 19:58:16,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:16,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:16,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:58:16,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:58:16,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:58:16,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:16,131 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-28 19:58:16,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 19:58:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:16,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:16,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:16,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 19:58:16,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:16,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:58:16,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:16,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:16,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:58:16,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:58:16,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 19:58:16,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:16,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 19:58:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:16,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:16,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:16,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:58:16,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:16,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:58:16,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:16,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:16,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:58:16,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:58:16,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:58:16,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:16,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 19:58:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:16,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:16,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:16,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:58:16,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:16,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:58:16,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:16,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:16,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:58:16,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:58:16,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:58:16,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:16,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 19:58:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:16,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:16,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:16,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:58:16,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:16,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:58:16,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:16,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:16,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:58:16,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:58:16,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:58:16,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:16,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 19:58:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:16,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:16,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:16,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:58:16,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:16,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:58:16,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:16,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:16,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:58:16,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:58:16,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:58:16,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:16,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-28 19:58:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:16,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:16,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:16,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:58:16,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:16,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:58:16,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:16,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:16,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:58:16,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 19:58:16,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:58:16,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:16,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-28 19:58:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:16,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:16,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:16,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 19:58:16,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:16,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:58:16,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:16,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:16,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:58:16,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 19:58:16,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:58:16,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:16,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 19:58:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:16,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:16,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:16,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 19:58:16,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:16,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:58:16,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:16,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:58:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 19:58:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:58:16,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:16,344 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-28 19:58:16,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908812252] [2020-10-28 19:58:16,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:58:16,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 19:58:16,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706727659] [2020-10-28 19:58:16,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 19:58:16,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:58:16,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 19:58:16,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-28 19:58:16,346 INFO L87 Difference]: Start difference. First operand 11160 states and 18518 transitions. Second operand 10 states. [2020-10-28 19:58:16,519 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 19:58:22,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:58:22,801 INFO L93 Difference]: Finished difference Result 57456 states and 97464 transitions. [2020-10-28 19:58:22,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-28 19:58:22,801 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 158 [2020-10-28 19:58:22,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:58:23,151 INFO L225 Difference]: With dead ends: 57456 [2020-10-28 19:58:23,151 INFO L226 Difference]: Without dead ends: 46316 [2020-10-28 19:58:23,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=296, Invalid=1036, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 19:58:23,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46316 states. [2020-10-28 19:58:26,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46316 to 27036. [2020-10-28 19:58:26,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27036 states. [2020-10-28 19:58:26,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27036 states to 27036 states and 45264 transitions. [2020-10-28 19:58:26,339 INFO L78 Accepts]: Start accepts. Automaton has 27036 states and 45264 transitions. Word has length 158 [2020-10-28 19:58:26,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:58:26,339 INFO L481 AbstractCegarLoop]: Abstraction has 27036 states and 45264 transitions. [2020-10-28 19:58:26,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 19:58:26,340 INFO L276 IsEmpty]: Start isEmpty. Operand 27036 states and 45264 transitions. [2020-10-28 19:58:26,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-28 19:58:26,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:58:26,453 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:26,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 19:58:26,453 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:58:26,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:58:26,454 INFO L82 PathProgramCache]: Analyzing trace with hash -586275121, now seen corresponding path program 1 times [2020-10-28 19:58:26,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:58:26,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963193066] [2020-10-28 19:58:26,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:58:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:26,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:26,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:26,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:26,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:26,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:26,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:26,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:26,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:26,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:26,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:31,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:31,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 19:58:31,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:58:31,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 19:58:31,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:31,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:31,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:58:31,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-28 19:58:31,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 19:58:31,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:31,630 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:58:31,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:58:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:31,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:31,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:31,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:58:31,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:31,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 19:58:31,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:31,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:58:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:58:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:58:31,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:31,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 19:58:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:31,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:31,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:31,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 19:58:31,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:31,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:58:31,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:31,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:31,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:58:31,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:58:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 19:58:31,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:31,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 19:58:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:31,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:31,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:31,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:58:31,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:31,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:58:31,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:31,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:31,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:58:31,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:58:31,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:58:31,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:31,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 19:58:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:31,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:31,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:31,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:58:31,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:31,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:58:31,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:31,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:58:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:58:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 19:58:31,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:31,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 19:58:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:31,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:31,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:31,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:58:31,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:31,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:58:31,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:31,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:31,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:58:31,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:58:31,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 19:58:31,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:31,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 19:58:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:31,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:31,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:31,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:58:31,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:31,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:58:31,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:31,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:58:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:58:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 19:58:31,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:31,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-28 19:58:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:31,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:31,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:31,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 19:58:31,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:31,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 19:58:31,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:31,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:58:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 19:58:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:58:31,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:31,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 19:58:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:31,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:31,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:31,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 19:58:31,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:31,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:58:31,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:31,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:31,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:58:31,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 19:58:31,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:58:31,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:31,896 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 19:58:31,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963193066] [2020-10-28 19:58:31,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:58:31,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 19:58:31,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214644852] [2020-10-28 19:58:31,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 19:58:31,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:58:31,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 19:58:31,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-28 19:58:31,898 INFO L87 Difference]: Start difference. First operand 27036 states and 45264 transitions. Second operand 10 states. [2020-10-28 19:58:32,368 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 19:58:39,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:58:39,046 INFO L93 Difference]: Finished difference Result 76230 states and 132111 transitions. [2020-10-28 19:58:39,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-28 19:58:39,046 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 145 [2020-10-28 19:58:39,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:58:39,439 INFO L225 Difference]: With dead ends: 76230 [2020-10-28 19:58:39,439 INFO L226 Difference]: Without dead ends: 49260 [2020-10-28 19:58:39,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=257, Invalid=865, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 19:58:39,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49260 states. [2020-10-28 19:58:43,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49260 to 28738. [2020-10-28 19:58:43,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28738 states. [2020-10-28 19:58:43,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28738 states to 28738 states and 47436 transitions. [2020-10-28 19:58:43,248 INFO L78 Accepts]: Start accepts. Automaton has 28738 states and 47436 transitions. Word has length 145 [2020-10-28 19:58:43,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:58:43,249 INFO L481 AbstractCegarLoop]: Abstraction has 28738 states and 47436 transitions. [2020-10-28 19:58:43,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 19:58:43,249 INFO L276 IsEmpty]: Start isEmpty. Operand 28738 states and 47436 transitions. [2020-10-28 19:58:43,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 19:58:43,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:58:43,366 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:43,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 19:58:43,366 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:58:43,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:58:43,367 INFO L82 PathProgramCache]: Analyzing trace with hash -2019834760, now seen corresponding path program 1 times [2020-10-28 19:58:43,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:58:43,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782671806] [2020-10-28 19:58:43,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:58:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:43,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:43,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:43,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:43,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:43,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:43,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:43,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:43,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:45,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:45,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:48,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:48,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-28 19:58:48,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:58:48,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 19:58:48,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:48,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:48,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:58:48,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-28 19:58:48,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 19:58:48,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:48,535 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:58:48,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:58:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:48,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:48,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:48,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:58:48,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:48,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 19:58:48,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:48,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:58:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:58:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:58:48,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:48,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 19:58:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:48,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:48,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:48,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 19:58:48,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:48,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:58:48,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:48,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:48,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:58:48,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:58:48,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 19:58:48,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:48,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 19:58:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:48,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:48,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:48,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:58:48,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:48,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:58:48,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:48,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:48,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:58:48,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:58:48,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:58:48,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:48,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 19:58:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:48,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:48,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:48,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 19:58:48,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:48,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:58:48,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:48,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:48,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:58:48,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:58:48,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:58:48,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:48,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 19:58:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:48,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:48,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:48,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:58:48,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:48,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:58:48,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:48,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:48,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:58:48,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:58:48,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 19:58:48,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:48,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 19:58:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:48,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:48,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:48,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:58:48,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:48,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:58:48,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:48,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:48,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:58:48,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:58:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 19:58:48,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:48,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-28 19:58:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:48,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:48,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:48,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:48,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 19:58:48,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:58:48,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 19:58:48,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:48,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:48,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:58:48,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 19:58:48,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:58:48,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:48,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-28 19:58:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:48,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:48,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:48,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:58:48,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:48,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 19:58:48,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:48,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:48,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:58:48,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 19:58:48,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:58:48,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:48,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 19:58:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:58:48,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:58:48,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:58:48,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 19:58:48,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:58:48,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:58:48,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:58:48,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:58:48,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:58:48,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 19:58:48,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:58:48,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:58:48,813 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 19:58:48,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782671806] [2020-10-28 19:58:48,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:58:48,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 19:58:48,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818947729] [2020-10-28 19:58:48,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 19:58:48,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:58:48,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 19:58:48,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-28 19:58:48,815 INFO L87 Difference]: Start difference. First operand 28738 states and 47436 transitions. Second operand 10 states. [2020-10-28 19:58:49,318 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 19:58:57,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:58:57,082 INFO L93 Difference]: Finished difference Result 82006 states and 140443 transitions. [2020-10-28 19:58:57,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-28 19:58:57,082 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 158 [2020-10-28 19:58:57,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:58:57,381 INFO L225 Difference]: With dead ends: 82006 [2020-10-28 19:58:57,381 INFO L226 Difference]: Without dead ends: 53376 [2020-10-28 19:58:57,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=257, Invalid=865, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 19:58:57,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53376 states. [2020-10-28 19:59:01,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53376 to 31254. [2020-10-28 19:59:01,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31254 states. [2020-10-28 19:59:01,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31254 states to 31254 states and 50762 transitions. [2020-10-28 19:59:01,329 INFO L78 Accepts]: Start accepts. Automaton has 31254 states and 50762 transitions. Word has length 158 [2020-10-28 19:59:01,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:59:01,329 INFO L481 AbstractCegarLoop]: Abstraction has 31254 states and 50762 transitions. [2020-10-28 19:59:01,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 19:59:01,329 INFO L276 IsEmpty]: Start isEmpty. Operand 31254 states and 50762 transitions. [2020-10-28 19:59:01,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 19:59:01,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:59:01,548 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:01,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 19:59:01,549 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:59:01,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:59:01,549 INFO L82 PathProgramCache]: Analyzing trace with hash 631128770, now seen corresponding path program 1 times [2020-10-28 19:59:01,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:59:01,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853334897] [2020-10-28 19:59:01,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:59:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:01,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:01,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:01,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:01,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:01,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:01,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:01,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:01,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:01,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:03,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:04,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:06,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:06,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-28 19:59:06,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 19:59:06,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 19:59:06,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:06,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:06,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:59:06,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 19:59:06,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 19:59:06,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:06,729 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:59:06,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:59:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:06,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:06,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:06,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:59:06,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:06,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 19:59:06,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:06,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:06,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:06,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:06,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:06,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:06,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 19:59:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:06,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:06,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:06,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 19:59:06,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:06,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 19:59:06,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:06,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:06,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:06,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 19:59:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:06,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:06,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:06,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:59:06,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:06,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:59:06,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:06,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:06,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:06,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:06,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:06,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:06,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 19:59:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:06,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:06,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:06,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 19:59:06,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:06,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:59:06,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:06,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:06,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:06,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:06,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:06,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:06,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 19:59:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:06,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:06,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:06,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:59:06,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:06,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:59:06,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:06,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:06,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:06,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:06,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:06,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:06,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 19:59:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:06,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:06,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:06,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:59:06,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:06,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:59:06,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:06,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:06,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:06,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:06,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:06,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:06,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 19:59:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:06,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:06,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:06,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:06,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:06,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 19:59:06,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 19:59:06,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 19:59:06,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:06,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:06,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:06,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 19:59:06,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:06,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:06,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-28 19:59:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:06,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:06,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:06,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:59:06,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:06,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:59:06,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:06,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:06,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:06,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 19:59:06,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:06,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:06,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 19:59:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:06,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:06,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:06,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 19:59:06,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:06,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:59:06,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:06,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:06,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:06,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 19:59:06,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:06,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-28 19:59:07,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853334897] [2020-10-28 19:59:07,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:59:07,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 19:59:07,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299698934] [2020-10-28 19:59:07,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 19:59:07,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:59:07,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 19:59:07,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-28 19:59:07,010 INFO L87 Difference]: Start difference. First operand 31254 states and 50762 transitions. Second operand 10 states. [2020-10-28 19:59:13,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:59:13,351 INFO L93 Difference]: Finished difference Result 83326 states and 138182 transitions. [2020-10-28 19:59:13,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 19:59:13,352 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 160 [2020-10-28 19:59:13,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:59:13,828 INFO L225 Difference]: With dead ends: 83326 [2020-10-28 19:59:13,828 INFO L226 Difference]: Without dead ends: 52156 [2020-10-28 19:59:14,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2020-10-28 19:59:14,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52156 states. [2020-10-28 19:59:17,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52156 to 31190. [2020-10-28 19:59:17,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31190 states. [2020-10-28 19:59:17,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31190 states to 31190 states and 50367 transitions. [2020-10-28 19:59:17,651 INFO L78 Accepts]: Start accepts. Automaton has 31190 states and 50367 transitions. Word has length 160 [2020-10-28 19:59:17,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:59:17,651 INFO L481 AbstractCegarLoop]: Abstraction has 31190 states and 50367 transitions. [2020-10-28 19:59:17,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 19:59:17,651 INFO L276 IsEmpty]: Start isEmpty. Operand 31190 states and 50367 transitions. [2020-10-28 19:59:17,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 19:59:17,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:59:17,746 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:17,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 19:59:17,747 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:59:17,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:59:17,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1330751844, now seen corresponding path program 1 times [2020-10-28 19:59:17,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:59:17,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094744222] [2020-10-28 19:59:17,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:59:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:17,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:17,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:17,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:17,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:17,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:17,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:18,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:18,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:18,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:18,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:18,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:22,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:22,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 19:59:22,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 19:59:22,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 19:59:22,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:22,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:22,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:59:22,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 19:59:22,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 19:59:22,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:22,941 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:59:22,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:59:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:22,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:22,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:22,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:59:22,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:22,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 19:59:22,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:22,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:22,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:23,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 19:59:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:23,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:23,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:23,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 19:59:23,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:23,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 19:59:23,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:23,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:23,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:23,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:23,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:23,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:23,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 19:59:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:23,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:23,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:23,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:59:23,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:23,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:59:23,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:23,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:23,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:23,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:23,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:23,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:23,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 19:59:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:23,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:23,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:23,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:59:23,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:23,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:59:23,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:23,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:23,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:23,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:23,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:23,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:23,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 19:59:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:23,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:23,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:23,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:59:23,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:23,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:59:23,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:23,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:23,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:23,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:23,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:23,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:23,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 19:59:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:23,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:23,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:23,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:59:23,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:23,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:59:23,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:23,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:23,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:23,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-28 19:59:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:23,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:23,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:23,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:23,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:23,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 19:59:23,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 19:59:23,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:59:23,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:23,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:23,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:23,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 19:59:23,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:23,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:23,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-28 19:59:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:23,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:23,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:23,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:59:23,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:23,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:59:23,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:23,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 19:59:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:23,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:23,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-28 19:59:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:23,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:23,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:23,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 19:59:23,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:23,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:59:23,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:23,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:23,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:23,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 19:59:23,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:23,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:23,215 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-28 19:59:23,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094744222] [2020-10-28 19:59:23,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:59:23,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 19:59:23,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616543971] [2020-10-28 19:59:23,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 19:59:23,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:59:23,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 19:59:23,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-28 19:59:23,216 INFO L87 Difference]: Start difference. First operand 31190 states and 50367 transitions. Second operand 10 states. [2020-10-28 19:59:23,385 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 19:59:30,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:59:30,774 INFO L93 Difference]: Finished difference Result 83131 states and 137615 transitions. [2020-10-28 19:59:30,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 19:59:30,774 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 157 [2020-10-28 19:59:30,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:59:31,029 INFO L225 Difference]: With dead ends: 83131 [2020-10-28 19:59:31,029 INFO L226 Difference]: Without dead ends: 52022 [2020-10-28 19:59:31,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2020-10-28 19:59:31,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52022 states. [2020-10-28 19:59:34,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52022 to 31084. [2020-10-28 19:59:34,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31084 states. [2020-10-28 19:59:34,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31084 states to 31084 states and 49613 transitions. [2020-10-28 19:59:34,540 INFO L78 Accepts]: Start accepts. Automaton has 31084 states and 49613 transitions. Word has length 157 [2020-10-28 19:59:34,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:59:34,541 INFO L481 AbstractCegarLoop]: Abstraction has 31084 states and 49613 transitions. [2020-10-28 19:59:34,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 19:59:34,541 INFO L276 IsEmpty]: Start isEmpty. Operand 31084 states and 49613 transitions. [2020-10-28 19:59:34,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 19:59:34,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:59:34,670 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:34,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 19:59:34,670 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:59:34,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:59:34,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1128621954, now seen corresponding path program 1 times [2020-10-28 19:59:34,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:59:34,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881934844] [2020-10-28 19:59:34,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:59:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:34,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:34,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:34,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:34,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:34,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:34,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:35,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:39,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:39,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-28 19:59:39,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:59:39,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 19:59:39,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:39,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:39,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:59:39,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 141 [2020-10-28 19:59:39,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 19:59:39,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:39,842 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:59:39,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:59:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:39,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:39,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:39,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:59:39,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:39,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 19:59:39,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:39,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:39,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:39,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:39,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 19:59:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:39,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:39,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:39,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 19:59:39,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:39,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 19:59:39,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:39,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:39,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:39,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:39,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:39,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:39,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 19:59:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:39,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:39,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:39,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:59:39,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:39,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:59:39,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:39,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:39,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:39,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:39,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:39,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:39,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 19:59:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:39,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:39,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:39,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 19:59:39,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:39,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:59:39,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:39,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:39,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:39,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:39,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:39,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:40,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 19:59:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:40,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:40,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:40,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:59:40,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:40,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:59:40,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:40,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:40,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:40,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:40,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:40,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:40,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 19:59:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:40,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:40,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:40,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:59:40,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:40,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:59:40,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:40,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:40,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:40,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:40,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:40,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:40,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 19:59:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:40,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:40,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:40,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:40,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 19:59:40,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:59:40,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:59:40,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:40,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:40,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:59:40,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 19:59:40,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 19:59:40,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:40,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-28 19:59:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:40,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:40,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:40,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:59:40,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:40,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 19:59:40,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:40,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:40,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:40,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 19:59:40,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:40,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:40,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 19:59:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:40,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:40,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:40,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 19:59:40,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:40,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:59:40,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:40,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:40,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:40,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 19:59:40,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:40,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:40,113 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-28 19:59:40,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881934844] [2020-10-28 19:59:40,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 19:59:40,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 19:59:40,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553248173] [2020-10-28 19:59:40,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 19:59:40,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:59:40,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 19:59:40,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-28 19:59:40,115 INFO L87 Difference]: Start difference. First operand 31084 states and 49613 transitions. Second operand 10 states. [2020-10-28 19:59:47,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:59:47,536 INFO L93 Difference]: Finished difference Result 79831 states and 131088 transitions. [2020-10-28 19:59:47,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 19:59:47,537 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 160 [2020-10-28 19:59:47,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:59:47,764 INFO L225 Difference]: With dead ends: 79831 [2020-10-28 19:59:47,764 INFO L226 Difference]: Without dead ends: 48956 [2020-10-28 19:59:47,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-10-28 19:59:47,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48956 states. [2020-10-28 19:59:50,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48956 to 27410. [2020-10-28 19:59:50,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27410 states. [2020-10-28 19:59:51,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27410 states to 27410 states and 43231 transitions. [2020-10-28 19:59:51,115 INFO L78 Accepts]: Start accepts. Automaton has 27410 states and 43231 transitions. Word has length 160 [2020-10-28 19:59:51,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:59:51,116 INFO L481 AbstractCegarLoop]: Abstraction has 27410 states and 43231 transitions. [2020-10-28 19:59:51,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 19:59:51,116 INFO L276 IsEmpty]: Start isEmpty. Operand 27410 states and 43231 transitions. [2020-10-28 19:59:51,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 19:59:51,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:59:51,195 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:51,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 19:59:51,195 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:59:51,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:59:51,195 INFO L82 PathProgramCache]: Analyzing trace with hash -256143141, now seen corresponding path program 1 times [2020-10-28 19:59:51,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:59:51,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484802416] [2020-10-28 19:59:51,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:59:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:51,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:51,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:51,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:51,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:51,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:51,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:51,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:51,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:51,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:56,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:56,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 19:59:56,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:59:56,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 19:59:56,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:56,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:56,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:59:56,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-28 19:59:56,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 19:59:56,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:56,372 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:59:56,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:59:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:56,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:56,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:56,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:59:56,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:56,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 19:59:56,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:56,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:56,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:56,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:56,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:56,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:56,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 19:59:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:56,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:56,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:56,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:56,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 19:59:56,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:59:56,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 19:59:56,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:56,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:56,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:59:56,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:56,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 19:59:56,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:56,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 19:59:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:56,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:56,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:56,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:59:56,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:56,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:59:56,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:56,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:56,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:56,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:56,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:56,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:56,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 19:59:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:56,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:56,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:56,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:59:56,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:56,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 19:59:56,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:56,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:56,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:59:56,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:56,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:59:56,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:56,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 19:59:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:56,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:56,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:56,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 19:59:56,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:56,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:59:56,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:56,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:56,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:59:56,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:56,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 19:59:56,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:56,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 19:59:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:56,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:56,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:56,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 19:59:56,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:56,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 19:59:56,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:56,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:56,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:59:56,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:56,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 19:59:56,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:56,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 19:59:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:56,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:56,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:56,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:59:56,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:56,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 19:59:56,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:56,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:59:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 19:59:56,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:56,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 19:59:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:59:56,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:59:56,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:59:56,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 19:59:56,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:59:56,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 19:59:56,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:59:56,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:59:56,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:59:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:59:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 19:59:56,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:59:56,681 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 19:59:56,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484802416] [2020-10-28 19:59:56,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:59:56,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 19:59:56,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016023177] [2020-10-28 19:59:56,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 19:59:56,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:59:56,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 19:59:56,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-28 19:59:56,683 INFO L87 Difference]: Start difference. First operand 27410 states and 43231 transitions. Second operand 10 states. [2020-10-28 19:59:56,851 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 20:00:03,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:00:03,556 INFO L93 Difference]: Finished difference Result 74682 states and 120482 transitions. [2020-10-28 20:00:03,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 20:00:03,557 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-10-28 20:00:03,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:00:03,751 INFO L225 Difference]: With dead ends: 74682 [2020-10-28 20:00:03,751 INFO L226 Difference]: Without dead ends: 47416 [2020-10-28 20:00:03,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=218, Invalid=594, Unknown=0, NotChecked=0, Total=812 [2020-10-28 20:00:03,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47416 states. [2020-10-28 20:00:06,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47416 to 26522. [2020-10-28 20:00:06,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26522 states. [2020-10-28 20:00:06,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26522 states to 26522 states and 41849 transitions. [2020-10-28 20:00:06,949 INFO L78 Accepts]: Start accepts. Automaton has 26522 states and 41849 transitions. Word has length 149 [2020-10-28 20:00:06,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:00:06,949 INFO L481 AbstractCegarLoop]: Abstraction has 26522 states and 41849 transitions. [2020-10-28 20:00:06,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 20:00:06,950 INFO L276 IsEmpty]: Start isEmpty. Operand 26522 states and 41849 transitions. [2020-10-28 20:00:07,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 20:00:07,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:00:07,034 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:07,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 20:00:07,034 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:00:07,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:00:07,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1847544936, now seen corresponding path program 1 times [2020-10-28 20:00:07,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:00:07,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425907381] [2020-10-28 20:00:07,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:00:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:00:07,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:07,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:07,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:07,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:07,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:10,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:11,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:11,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:11,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:11,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:12,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:00:12,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-28 20:00:12,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 20:00:12,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 20:00:12,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:00:12,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:00:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:00:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 20:00:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 20:00:12,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:00:12,206 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 20:00:12,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:00:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:00:12,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:12,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:00:12,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:00:12,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:00:12,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:00:12,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:00:12,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:00:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:00:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:00:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:00:12,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:00:12,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 20:00:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:00:12,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:12,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:00:12,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 20:00:12,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:00:12,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 20:00:12,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:00:12,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:00:12,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:00:12,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:00:12,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 20:00:12,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:00:12,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 20:00:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:00:12,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:12,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:00:12,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:00:12,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:00:12,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:00:12,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:00:12,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:00:12,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:00:12,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:00:12,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:00:12,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:00:12,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 20:00:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:00:12,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:12,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:00:12,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:00:12,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:00:12,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:00:12,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:00:12,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:00:12,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:00:12,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:00:12,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:00:12,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:00:12,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 20:00:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:00:12,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:12,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:00:12,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 20:00:12,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:00:12,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:00:12,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:00:12,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:00:12,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:00:12,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:00:12,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:00:12,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:00:12,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 20:00:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:00:12,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:12,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:00:12,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 20:00:12,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:00:12,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:00:12,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:00:12,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:00:12,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:00:12,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:00:12,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 20:00:12,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:00:12,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-28 20:00:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:00:12,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:12,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:00:12,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 20:00:12,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:00:12,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:00:12,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:00:12,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:00:12,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:00:12,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 20:00:12,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:00:12,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:00:12,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 20:00:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:00:12,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:12,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:00:12,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 20:00:12,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:00:12,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:00:12,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:00:12,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:00:12,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:00:12,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 20:00:12,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:00:12,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:00:12,469 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 20:00:12,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425907381] [2020-10-28 20:00:12,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 20:00:12,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 20:00:12,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379990188] [2020-10-28 20:00:12,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 20:00:12,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:00:12,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 20:00:12,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-28 20:00:12,471 INFO L87 Difference]: Start difference. First operand 26522 states and 41849 transitions. Second operand 10 states. [2020-10-28 20:00:12,869 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 20:00:21,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:00:21,706 INFO L93 Difference]: Finished difference Result 76816 states and 127574 transitions. [2020-10-28 20:00:21,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-28 20:00:21,707 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 154 [2020-10-28 20:00:21,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:00:21,923 INFO L225 Difference]: With dead ends: 76816 [2020-10-28 20:00:21,924 INFO L226 Difference]: Without dead ends: 50550 [2020-10-28 20:00:22,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=246, Invalid=810, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 20:00:22,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50550 states. [2020-10-28 20:00:25,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50550 to 30944. [2020-10-28 20:00:25,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30944 states. [2020-10-28 20:00:25,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30944 states to 30944 states and 47761 transitions. [2020-10-28 20:00:25,910 INFO L78 Accepts]: Start accepts. Automaton has 30944 states and 47761 transitions. Word has length 154 [2020-10-28 20:00:25,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:00:25,911 INFO L481 AbstractCegarLoop]: Abstraction has 30944 states and 47761 transitions. [2020-10-28 20:00:25,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 20:00:25,911 INFO L276 IsEmpty]: Start isEmpty. Operand 30944 states and 47761 transitions. [2020-10-28 20:00:26,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 20:00:26,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:00:26,017 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:26,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 20:00:26,017 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:00:26,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:00:26,017 INFO L82 PathProgramCache]: Analyzing trace with hash -2001998576, now seen corresponding path program 1 times [2020-10-28 20:00:26,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:00:26,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689274732] [2020-10-28 20:00:26,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:00:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:00:26,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:26,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:26,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:26,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:26,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:26,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:26,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:26,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:26,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:26,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:26,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:26,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:26,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:00:27,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking...