/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:39:58,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:39:58,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:39:58,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:39:58,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:39:58,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:39:58,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:39:58,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:39:58,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:39:58,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:39:58,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:39:58,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:39:58,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:39:58,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:39:58,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:39:58,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:39:58,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:39:58,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:39:58,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:39:58,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:39:58,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:39:58,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:39:58,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:39:58,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:39:58,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:39:58,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:39:58,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:39:58,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:39:58,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:39:58,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:39:58,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:39:58,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:39:58,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:39:58,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:39:58,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:39:58,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:39:58,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:39:58,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:39:58,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:39:58,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:39:58,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:39:58,437 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 18:39:58,497 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:39:58,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:39:58,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:39:58,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:39:58,502 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:39:58,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:39:58,502 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:39:58,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:39:58,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:39:58,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:39:58,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:39:58,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:39:58,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:39:58,505 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:39:58,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:39:58,505 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:39:58,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:39:58,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:39:58,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:39:58,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:39:58,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:39:58,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:39:58,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:39:58,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:39:58,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:39:58,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:39:58,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:39:58,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:39:58,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:39:58,509 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:39:58,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:39:58,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:39:58,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:39:58,958 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:39:58,959 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:39:58,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-28 18:39:59,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92d8be000/6e252fefab4c4d20b2f92a1a1eda9574/FLAG6f78145ae [2020-10-28 18:39:59,721 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:39:59,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-28 18:39:59,742 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92d8be000/6e252fefab4c4d20b2f92a1a1eda9574/FLAG6f78145ae [2020-10-28 18:39:59,961 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92d8be000/6e252fefab4c4d20b2f92a1a1eda9574 [2020-10-28 18:39:59,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:39:59,970 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:39:59,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:39:59,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:39:59,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:39:59,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:39:59" (1/1) ... [2020-10-28 18:39:59,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5931a6b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:39:59, skipping insertion in model container [2020-10-28 18:39:59,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:39:59" (1/1) ... [2020-10-28 18:39:59,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:40:00,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:40:00,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:40:00,543 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:40:00,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:40:00,694 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:40:00,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:40:00 WrapperNode [2020-10-28 18:40:00,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:40:00,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:40:00,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:40:00,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:40:00,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:40:00" (1/1) ... [2020-10-28 18:40:00,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:40:00" (1/1) ... [2020-10-28 18:40:00,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:40:00" (1/1) ... [2020-10-28 18:40:00,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:40:00" (1/1) ... [2020-10-28 18:40:00,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:40:00" (1/1) ... [2020-10-28 18:40:00,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:40:00" (1/1) ... [2020-10-28 18:40:00,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:40:00" (1/1) ... [2020-10-28 18:40:00,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:40:00,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:40:00,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:40:00,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:40:00,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:40:00" (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 18:40:00,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:40:00,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:40:00,947 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:40:00,948 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:40:00,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:40:00,951 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:40:00,951 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:40:00,951 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:40:00,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:40:00,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:40:00,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:40:00,952 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:40:00,952 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:40:00,952 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:40:00,953 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:40:00,955 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:40:00,955 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:40:00,955 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:40:00,955 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:40:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 18:40:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-28 18:40:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:40:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:40:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:40:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:40:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:40:00,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:40:00,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:40:00,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:40:00,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:40:02,330 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:40:02,330 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:40:02,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:40:02 BoogieIcfgContainer [2020-10-28 18:40:02,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:40:02,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:40:02,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:40:02,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:40:02,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:39:59" (1/3) ... [2020-10-28 18:40:02,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0b702a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:40:02, skipping insertion in model container [2020-10-28 18:40:02,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:40:00" (2/3) ... [2020-10-28 18:40:02,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0b702a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:40:02, skipping insertion in model container [2020-10-28 18:40:02,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:40:02" (3/3) ... [2020-10-28 18:40:02,345 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-28 18:40:02,357 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:40:02,362 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:40:02,373 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:40:02,398 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:40:02,398 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:40:02,399 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:40:02,399 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:40:02,399 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:40:02,399 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:40:02,399 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:40:02,399 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:40:02,420 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states. [2020-10-28 18:40:02,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 18:40:02,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:40:02,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:40:02,432 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:40:02,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:40:02,439 INFO L82 PathProgramCache]: Analyzing trace with hash -2070299591, now seen corresponding path program 1 times [2020-10-28 18:40:02,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:40:02,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163410112] [2020-10-28 18:40:02,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:40:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:02,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:03,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:03,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:03,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:03,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:03,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:04,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:04,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:07,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:07,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:07,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 18:40:07,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:40:07,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-28 18:40:07,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:07,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:40:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:40:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 18:40:07,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 18:40:08,691 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:40:08,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:40:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:08,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:08,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:08,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:40:08,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:40:08,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 18:40:08,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:08,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:08,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:40:08,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:40:08,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:40:08,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:40:08,841 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 18:40:08,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163410112] [2020-10-28 18:40:08,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:40:08,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:40:08,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734624788] [2020-10-28 18:40:08,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:40:08,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:40:08,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:40:08,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:40:08,879 INFO L87 Difference]: Start difference. First operand 187 states. Second operand 6 states. [2020-10-28 18:40:09,651 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:40:11,485 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 18:40:12,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:40:12,116 INFO L93 Difference]: Finished difference Result 416 states and 690 transitions. [2020-10-28 18:40:12,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:40:12,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2020-10-28 18:40:12,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:40:12,132 INFO L225 Difference]: With dead ends: 416 [2020-10-28 18:40:12,132 INFO L226 Difference]: Without dead ends: 272 [2020-10-28 18:40:12,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:40:12,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-28 18:40:12,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 269. [2020-10-28 18:40:12,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-28 18:40:12,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 385 transitions. [2020-10-28 18:40:12,209 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 385 transitions. Word has length 96 [2020-10-28 18:40:12,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:40:12,210 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 385 transitions. [2020-10-28 18:40:12,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:40:12,210 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 385 transitions. [2020-10-28 18:40:12,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 18:40:12,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:40:12,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:40:12,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:40:12,215 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:40:12,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:40:12,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1564295992, now seen corresponding path program 1 times [2020-10-28 18:40:12,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:40:12,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570503929] [2020-10-28 18:40:12,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:40:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:12,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:12,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:12,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:12,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:12,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:12,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:13,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:13,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:15,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:16,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:16,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:17,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:17,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 18:40:17,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:40:17,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 18:40:17,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:17,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:17,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:40:17,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 18:40:17,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 18:40:17,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:40:17,872 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:40:17,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:40:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:17,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:17,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:17,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:40:17,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:40:17,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 18:40:17,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:17,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:17,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:40:17,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:40:17,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:40:17,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:40:17,927 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 18:40:17,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570503929] [2020-10-28 18:40:17,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:40:17,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:40:17,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984336966] [2020-10-28 18:40:17,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:40:17,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:40:17,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:40:17,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:40:17,932 INFO L87 Difference]: Start difference. First operand 269 states and 385 transitions. Second operand 4 states. [2020-10-28 18:40:18,570 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:40:19,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:40:19,950 INFO L93 Difference]: Finished difference Result 588 states and 885 transitions. [2020-10-28 18:40:19,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:40:19,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-10-28 18:40:19,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:40:19,957 INFO L225 Difference]: With dead ends: 588 [2020-10-28 18:40:19,957 INFO L226 Difference]: Without dead ends: 448 [2020-10-28 18:40:19,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:40:19,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-10-28 18:40:20,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 445. [2020-10-28 18:40:20,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-10-28 18:40:20,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 660 transitions. [2020-10-28 18:40:20,021 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 660 transitions. Word has length 97 [2020-10-28 18:40:20,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:40:20,022 INFO L481 AbstractCegarLoop]: Abstraction has 445 states and 660 transitions. [2020-10-28 18:40:20,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:40:20,024 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 660 transitions. [2020-10-28 18:40:20,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 18:40:20,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:40:20,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:40:20,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:40:20,033 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:40:20,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:40:20,034 INFO L82 PathProgramCache]: Analyzing trace with hash 2098570728, now seen corresponding path program 1 times [2020-10-28 18:40:20,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:40:20,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059280346] [2020-10-28 18:40:20,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:40:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:20,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:20,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:20,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:20,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:20,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:20,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:20,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:20,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:20,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:25,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:25,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 18:40:25,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:40:25,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 18:40:25,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:25,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:25,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:40:25,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:40:25,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 18:40:25,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:40:25,724 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:40:25,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:40:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:25,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:25,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:25,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:40:25,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:40:25,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 18:40:25,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:25,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:25,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:40:25,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:40:25,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:40:25,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:40:25,792 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 18:40:25,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059280346] [2020-10-28 18:40:25,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:40:25,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:40:25,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068692649] [2020-10-28 18:40:25,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:40:25,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:40:25,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:40:25,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:40:25,795 INFO L87 Difference]: Start difference. First operand 445 states and 660 transitions. Second operand 6 states. [2020-10-28 18:40:26,442 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 18:40:27,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:40:27,555 INFO L93 Difference]: Finished difference Result 831 states and 1259 transitions. [2020-10-28 18:40:27,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:40:27,557 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-28 18:40:27,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:40:27,561 INFO L225 Difference]: With dead ends: 831 [2020-10-28 18:40:27,561 INFO L226 Difference]: Without dead ends: 445 [2020-10-28 18:40:27,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:40:27,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-10-28 18:40:27,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2020-10-28 18:40:27,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-10-28 18:40:27,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 655 transitions. [2020-10-28 18:40:27,614 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 655 transitions. Word has length 99 [2020-10-28 18:40:27,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:40:27,615 INFO L481 AbstractCegarLoop]: Abstraction has 445 states and 655 transitions. [2020-10-28 18:40:27,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:40:27,615 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 655 transitions. [2020-10-28 18:40:27,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 18:40:27,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:40:27,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:40:27,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:40:27,618 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:40:27,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:40:27,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1393241834, now seen corresponding path program 1 times [2020-10-28 18:40:27,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:40:27,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894357011] [2020-10-28 18:40:27,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:40:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:27,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:27,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:27,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:27,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:27,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:28,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:28,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:28,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:32,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:32,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:32,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:32,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:32,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 18:40:32,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:40:32,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 18:40:32,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:32,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:32,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:40:32,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:40:32,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 18:40:32,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:40:33,438 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:40:33,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:40:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:33,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:33,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:33,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:40:33,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:40:33,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 18:40:33,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:33,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:40:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:40:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:40:33,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:40:33,528 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 18:40:33,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894357011] [2020-10-28 18:40:33,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:40:33,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:40:33,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952240154] [2020-10-28 18:40:33,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:40:33,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:40:33,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:40:33,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:40:33,533 INFO L87 Difference]: Start difference. First operand 445 states and 655 transitions. Second operand 6 states. [2020-10-28 18:40:34,190 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 18:40:35,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:40:35,250 INFO L93 Difference]: Finished difference Result 819 states and 1235 transitions. [2020-10-28 18:40:35,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:40:35,251 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2020-10-28 18:40:35,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:40:35,255 INFO L225 Difference]: With dead ends: 819 [2020-10-28 18:40:35,255 INFO L226 Difference]: Without dead ends: 445 [2020-10-28 18:40:35,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:40:35,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-10-28 18:40:35,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2020-10-28 18:40:35,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-10-28 18:40:35,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 650 transitions. [2020-10-28 18:40:35,297 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 650 transitions. Word has length 100 [2020-10-28 18:40:35,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:40:35,298 INFO L481 AbstractCegarLoop]: Abstraction has 445 states and 650 transitions. [2020-10-28 18:40:35,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:40:35,298 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 650 transitions. [2020-10-28 18:40:35,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 18:40:35,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:40:35,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:40:35,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:40:35,300 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:40:35,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:40:35,301 INFO L82 PathProgramCache]: Analyzing trace with hash -373067145, now seen corresponding path program 1 times [2020-10-28 18:40:35,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:40:35,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694169442] [2020-10-28 18:40:35,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:40:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:35,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:35,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:35,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:35,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:35,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:38,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:38,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:38,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:39,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:39,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:39,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:39,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:40,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:40,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 18:40:40,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:40:40,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 18:40:40,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:40,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:40,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:40:40,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:40:40,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 18:40:40,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:40:40,961 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:40:40,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:40:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:40,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:40,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:40,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:40:40,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:40:40,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:40:40,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:40,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:40,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:40:40,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:40:40,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:40:40,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 18 [2020-10-28 18:40:41,027 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 18:40:41,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694169442] [2020-10-28 18:40:41,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:40:41,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:40:41,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727239535] [2020-10-28 18:40:41,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:40:41,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:40:41,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:40:41,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:40:41,030 INFO L87 Difference]: Start difference. First operand 445 states and 650 transitions. Second operand 6 states. [2020-10-28 18:40:41,687 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:40:43,385 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 18:40:43,991 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:40:45,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:40:45,641 INFO L93 Difference]: Finished difference Result 2644 states and 4035 transitions. [2020-10-28 18:40:45,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 18:40:45,642 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-28 18:40:45,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:40:45,656 INFO L225 Difference]: With dead ends: 2644 [2020-10-28 18:40:45,656 INFO L226 Difference]: Without dead ends: 2328 [2020-10-28 18:40:45,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 18:40:45,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2020-10-28 18:40:45,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 1522. [2020-10-28 18:40:45,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1522 states. [2020-10-28 18:40:45,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2305 transitions. [2020-10-28 18:40:45,782 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2305 transitions. Word has length 101 [2020-10-28 18:40:45,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:40:45,782 INFO L481 AbstractCegarLoop]: Abstraction has 1522 states and 2305 transitions. [2020-10-28 18:40:45,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:40:45,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2305 transitions. [2020-10-28 18:40:45,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 18:40:45,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:40:45,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:40:45,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:40:45,785 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:40:45,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:40:45,786 INFO L82 PathProgramCache]: Analyzing trace with hash -496509544, now seen corresponding path program 1 times [2020-10-28 18:40:45,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:40:45,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477221686] [2020-10-28 18:40:45,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:40:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:45,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:45,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:45,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:46,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:46,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:46,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:46,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:46,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:46,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:46,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:48,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:49,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:50,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:50,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:50,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 18:40:50,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:40:50,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 18:40:50,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:50,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:50,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:40:50,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:40:50,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 18:40:50,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:40:51,179 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-10-28 18:40:51,759 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:40:51,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:40:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:51,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:51,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:51,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:40:51,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:40:51,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 18:40:51,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:51,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:51,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:40:51,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:40:51,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:40:51,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 18:40:51,858 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 18:40:51,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477221686] [2020-10-28 18:40:51,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:40:51,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:40:51,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476277500] [2020-10-28 18:40:51,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:40:51,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:40:51,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:40:51,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:40:51,862 INFO L87 Difference]: Start difference. First operand 1522 states and 2305 transitions. Second operand 8 states. [2020-10-28 18:40:52,559 WARN L193 SmtUtils]: Spent 601.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-28 18:40:54,225 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-28 18:40:55,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:40:55,141 INFO L93 Difference]: Finished difference Result 3695 states and 5649 transitions. [2020-10-28 18:40:55,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 18:40:55,142 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 101 [2020-10-28 18:40:55,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:40:55,154 INFO L225 Difference]: With dead ends: 3695 [2020-10-28 18:40:55,155 INFO L226 Difference]: Without dead ends: 2464 [2020-10-28 18:40:55,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-28 18:40:55,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2020-10-28 18:40:55,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 1391. [2020-10-28 18:40:55,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1391 states. [2020-10-28 18:40:55,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 2097 transitions. [2020-10-28 18:40:55,338 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 2097 transitions. Word has length 101 [2020-10-28 18:40:55,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:40:55,338 INFO L481 AbstractCegarLoop]: Abstraction has 1391 states and 2097 transitions. [2020-10-28 18:40:55,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:40:55,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 2097 transitions. [2020-10-28 18:40:55,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-28 18:40:55,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:40:55,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:40:55,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:40:55,341 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:40:55,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:40:55,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1356528745, now seen corresponding path program 1 times [2020-10-28 18:40:55,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:40:55,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20916553] [2020-10-28 18:40:55,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:40:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:55,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:55,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:55,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:55,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:55,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:56,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:56,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:56,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:56,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:57,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:58,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:58,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:58,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:58,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:58,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:00,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:00,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 18:41:00,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 18:41:00,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:41:00,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:00,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:00,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:41:00,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 18:41:00,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 18:41:00,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:01,004 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:41:01,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:41:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:01,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:01,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:01,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:41:01,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:41:01,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:41:01,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:01,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:01,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:41:01,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:41:01,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:41:01,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:01,049 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 18:41:01,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20916553] [2020-10-28 18:41:01,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:41:01,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:41:01,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343137031] [2020-10-28 18:41:01,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:41:01,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:41:01,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:41:01,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:41:01,051 INFO L87 Difference]: Start difference. First operand 1391 states and 2097 transitions. Second operand 6 states. [2020-10-28 18:41:01,716 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 18:41:02,917 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 18:41:03,559 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 18:41:04,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:41:04,479 INFO L93 Difference]: Finished difference Result 3471 states and 5295 transitions. [2020-10-28 18:41:04,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:41:04,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-28 18:41:04,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:41:04,493 INFO L225 Difference]: With dead ends: 3471 [2020-10-28 18:41:04,493 INFO L226 Difference]: Without dead ends: 2408 [2020-10-28 18:41:04,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:41:04,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2020-10-28 18:41:04,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 1974. [2020-10-28 18:41:04,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2020-10-28 18:41:04,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3001 transitions. [2020-10-28 18:41:04,730 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3001 transitions. Word has length 102 [2020-10-28 18:41:04,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:41:04,730 INFO L481 AbstractCegarLoop]: Abstraction has 1974 states and 3001 transitions. [2020-10-28 18:41:04,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:41:04,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3001 transitions. [2020-10-28 18:41:04,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-28 18:41:04,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:41:04,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:41:04,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:41:04,733 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:41:04,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:41:04,734 INFO L82 PathProgramCache]: Analyzing trace with hash 2104331379, now seen corresponding path program 1 times [2020-10-28 18:41:04,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:41:04,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329274125] [2020-10-28 18:41:04,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:41:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:04,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:04,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:04,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:04,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:04,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:05,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:06,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:06,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:09,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:09,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 18:41:09,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:41:09,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:41:09,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:09,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:09,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:41:09,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:41:09,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 18:41:09,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:10,400 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:41:10,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:41:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:10,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:10,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:10,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:41:10,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:41:10,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 18:41:10,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:10,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:10,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:41:10,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:41:10,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:41:10,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:10,471 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 18:41:10,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329274125] [2020-10-28 18:41:10,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:41:10,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:41:10,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646931701] [2020-10-28 18:41:10,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:41:10,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:41:10,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:41:10,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:41:10,474 INFO L87 Difference]: Start difference. First operand 1974 states and 3001 transitions. Second operand 6 states. [2020-10-28 18:41:11,131 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:41:12,477 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 18:41:13,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:41:13,328 INFO L93 Difference]: Finished difference Result 5522 states and 8458 transitions. [2020-10-28 18:41:13,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:41:13,329 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-28 18:41:13,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:41:13,346 INFO L225 Difference]: With dead ends: 5522 [2020-10-28 18:41:13,347 INFO L226 Difference]: Without dead ends: 3631 [2020-10-28 18:41:13,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:41:13,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3631 states. [2020-10-28 18:41:13,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3631 to 3628. [2020-10-28 18:41:13,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3628 states. [2020-10-28 18:41:13,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 5517 transitions. [2020-10-28 18:41:13,823 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 5517 transitions. Word has length 102 [2020-10-28 18:41:13,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:41:13,824 INFO L481 AbstractCegarLoop]: Abstraction has 3628 states and 5517 transitions. [2020-10-28 18:41:13,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:41:13,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 5517 transitions. [2020-10-28 18:41:13,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 18:41:13,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:41:13,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:41:13,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:41:13,827 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:41:13,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:41:13,828 INFO L82 PathProgramCache]: Analyzing trace with hash -155092463, now seen corresponding path program 1 times [2020-10-28 18:41:13,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:41:13,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260963549] [2020-10-28 18:41:13,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:41:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:13,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:13,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:13,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:14,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:14,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:15,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:15,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:15,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:15,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:16,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:16,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:16,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:17,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:18,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:18,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 18:41:18,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:41:18,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 18:41:18,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:18,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:18,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:41:18,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 18:41:18,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 18:41:18,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:19,435 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:41:19,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:41:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:19,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:19,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:19,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:41:19,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:41:19,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:41:19,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:19,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:41:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:41:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:41:19,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:19,466 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 18:41:19,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260963549] [2020-10-28 18:41:19,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:41:19,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:41:19,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29163740] [2020-10-28 18:41:19,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:41:19,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:41:19,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:41:19,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:41:19,468 INFO L87 Difference]: Start difference. First operand 3628 states and 5517 transitions. Second operand 6 states. [2020-10-28 18:41:20,084 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:41:21,974 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 18:41:22,628 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:41:26,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:41:26,351 INFO L93 Difference]: Finished difference Result 30332 states and 46422 transitions. [2020-10-28 18:41:26,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 18:41:26,352 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-28 18:41:26,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:41:26,449 INFO L225 Difference]: With dead ends: 30332 [2020-10-28 18:41:26,450 INFO L226 Difference]: Without dead ends: 27039 [2020-10-28 18:41:26,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-28 18:41:26,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27039 states. [2020-10-28 18:41:28,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27039 to 13914. [2020-10-28 18:41:28,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13914 states. [2020-10-28 18:41:28,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13914 states to 13914 states and 21206 transitions. [2020-10-28 18:41:28,181 INFO L78 Accepts]: Start accepts. Automaton has 13914 states and 21206 transitions. Word has length 103 [2020-10-28 18:41:28,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:41:28,182 INFO L481 AbstractCegarLoop]: Abstraction has 13914 states and 21206 transitions. [2020-10-28 18:41:28,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:41:28,182 INFO L276 IsEmpty]: Start isEmpty. Operand 13914 states and 21206 transitions. [2020-10-28 18:41:28,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 18:41:28,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:41:28,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:28,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:41:28,188 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:41:28,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:41:28,189 INFO L82 PathProgramCache]: Analyzing trace with hash -670383858, now seen corresponding path program 1 times [2020-10-28 18:41:28,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:41:28,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743371686] [2020-10-28 18:41:28,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:41:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:28,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:28,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:28,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:28,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:28,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:28,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:28,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:29,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:29,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:29,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:30,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:30,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:32,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:32,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:33,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:33,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 18:41:33,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:41:33,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 18:41:33,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:33,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:33,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:41:33,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 18:41:33,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 18:41:33,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:33,814 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:41:33,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:41:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:33,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:33,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:33,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:41:33,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:41:33,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:41:33,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:33,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:33,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:41:33,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:41:33,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:41:33,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:33,845 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 18:41:33,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743371686] [2020-10-28 18:41:33,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:41:33,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:41:33,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024708302] [2020-10-28 18:41:33,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:41:33,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:41:33,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:41:33,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:41:33,846 INFO L87 Difference]: Start difference. First operand 13914 states and 21206 transitions. Second operand 4 states. [2020-10-28 18:41:34,457 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:41:37,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:41:37,208 INFO L93 Difference]: Finished difference Result 30944 states and 47258 transitions. [2020-10-28 18:41:37,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:41:37,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-28 18:41:37,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:41:37,250 INFO L225 Difference]: With dead ends: 30944 [2020-10-28 18:41:37,251 INFO L226 Difference]: Without dead ends: 18237 [2020-10-28 18:41:37,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:41:37,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18237 states. [2020-10-28 18:41:39,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18237 to 18234. [2020-10-28 18:41:39,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18234 states. [2020-10-28 18:41:39,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18234 states to 18234 states and 27702 transitions. [2020-10-28 18:41:39,090 INFO L78 Accepts]: Start accepts. Automaton has 18234 states and 27702 transitions. Word has length 103 [2020-10-28 18:41:39,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:41:39,091 INFO L481 AbstractCegarLoop]: Abstraction has 18234 states and 27702 transitions. [2020-10-28 18:41:39,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:41:39,091 INFO L276 IsEmpty]: Start isEmpty. Operand 18234 states and 27702 transitions. [2020-10-28 18:41:39,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 18:41:39,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:41:39,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:41:39,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 18:41:39,096 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:41:39,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:41:39,097 INFO L82 PathProgramCache]: Analyzing trace with hash 441801197, now seen corresponding path program 1 times [2020-10-28 18:41:39,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:41:39,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082521560] [2020-10-28 18:41:39,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:41:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:39,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:39,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:39,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:39,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:39,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:39,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:39,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:39,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:40,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:40,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:40,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:41,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:41,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:42,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:44,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:44,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 18:41:44,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:41:44,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 18:41:44,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:44,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:41:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 18:41:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 18:41:44,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:44,774 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:41:44,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:41:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:44,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:44,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:44,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:41:44,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:41:44,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:41:44,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:44,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:44,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:41:44,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:41:44,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:41:44,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:44,838 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 18:41:44,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082521560] [2020-10-28 18:41:44,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:41:44,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:41:44,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111750849] [2020-10-28 18:41:44,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:41:44,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:41:44,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:41:44,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:41:44,840 INFO L87 Difference]: Start difference. First operand 18234 states and 27702 transitions. Second operand 5 states. [2020-10-28 18:41:45,524 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-28 18:41:46,765 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 18:41:50,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:41:50,190 INFO L93 Difference]: Finished difference Result 48968 states and 74194 transitions. [2020-10-28 18:41:50,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:41:50,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-28 18:41:50,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:41:50,259 INFO L225 Difference]: With dead ends: 48968 [2020-10-28 18:41:50,259 INFO L226 Difference]: Without dead ends: 31941 [2020-10-28 18:41:50,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:41:50,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31941 states. [2020-10-28 18:41:53,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31941 to 31938. [2020-10-28 18:41:53,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31938 states. [2020-10-28 18:41:54,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31938 states to 31938 states and 48046 transitions. [2020-10-28 18:41:54,065 INFO L78 Accepts]: Start accepts. Automaton has 31938 states and 48046 transitions. Word has length 103 [2020-10-28 18:41:54,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:41:54,066 INFO L481 AbstractCegarLoop]: Abstraction has 31938 states and 48046 transitions. [2020-10-28 18:41:54,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:41:54,066 INFO L276 IsEmpty]: Start isEmpty. Operand 31938 states and 48046 transitions. [2020-10-28 18:41:54,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 18:41:54,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:41:54,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:41:54,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 18:41:54,072 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:41:54,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:41:54,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1414895079, now seen corresponding path program 1 times [2020-10-28 18:41:54,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:41:54,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522108116] [2020-10-28 18:41:54,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:41:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:54,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:54,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:54,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:54,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:54,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:55,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:55,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:55,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:56,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:56,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:57,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:59,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:59,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 18:41:59,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:41:59,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 18:41:59,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:59,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:59,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:41:59,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:41:59,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 18:41:59,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:59,731 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:41:59,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:41:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:59,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:59,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:59,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:41:59,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:41:59,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 18:41:59,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:59,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:59,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:41:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:41:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:41:59,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:59,793 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 18:41:59,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522108116] [2020-10-28 18:41:59,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:41:59,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:41:59,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937677846] [2020-10-28 18:41:59,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:41:59,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:41:59,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:41:59,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:41:59,796 INFO L87 Difference]: Start difference. First operand 31938 states and 48046 transitions. Second operand 6 states. [2020-10-28 18:42:00,465 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 18:42:02,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:02,982 INFO L93 Difference]: Finished difference Result 39653 states and 59704 transitions. [2020-10-28 18:42:02,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:42:02,983 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-28 18:42:02,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:03,010 INFO L225 Difference]: With dead ends: 39653 [2020-10-28 18:42:03,011 INFO L226 Difference]: Without dead ends: 16068 [2020-10-28 18:42:03,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:42:03,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16068 states. [2020-10-28 18:42:04,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16068 to 8152. [2020-10-28 18:42:04,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8152 states. [2020-10-28 18:42:04,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8152 states to 8152 states and 12159 transitions. [2020-10-28 18:42:04,110 INFO L78 Accepts]: Start accepts. Automaton has 8152 states and 12159 transitions. Word has length 103 [2020-10-28 18:42:04,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:04,110 INFO L481 AbstractCegarLoop]: Abstraction has 8152 states and 12159 transitions. [2020-10-28 18:42:04,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:42:04,110 INFO L276 IsEmpty]: Start isEmpty. Operand 8152 states and 12159 transitions. [2020-10-28 18:42:04,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 18:42:04,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:04,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:42:04,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 18:42:04,113 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:04,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:04,114 INFO L82 PathProgramCache]: Analyzing trace with hash -233735804, now seen corresponding path program 1 times [2020-10-28 18:42:04,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:04,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385707246] [2020-10-28 18:42:04,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:04,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:04,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:04,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:04,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:04,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:05,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:05,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:05,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:06,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:06,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:07,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:07,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:08,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:08,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:09,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:09,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 18:42:09,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:42:09,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 18:42:09,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:09,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:09,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:42:09,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:42:09,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 18:42:09,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:09,785 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:42:09,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:09,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:09,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:09,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:09,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:09,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 18:42:09,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:09,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:09,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:42:09,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:09,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:42:09,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:09,836 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 18:42:09,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385707246] [2020-10-28 18:42:09,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:09,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:42:09,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340665443] [2020-10-28 18:42:09,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:42:09,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:09,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:42:09,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:42:09,838 INFO L87 Difference]: Start difference. First operand 8152 states and 12159 transitions. Second operand 6 states. [2020-10-28 18:42:10,513 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:42:11,973 WARN L193 SmtUtils]: Spent 606.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 18:42:13,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:13,412 INFO L93 Difference]: Finished difference Result 11754 states and 17555 transitions. [2020-10-28 18:42:13,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:42:13,413 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-28 18:42:13,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:13,424 INFO L225 Difference]: With dead ends: 11754 [2020-10-28 18:42:13,424 INFO L226 Difference]: Without dead ends: 5960 [2020-10-28 18:42:13,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:42:13,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5960 states. [2020-10-28 18:42:13,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5960 to 4145. [2020-10-28 18:42:13,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4145 states. [2020-10-28 18:42:13,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4145 states to 4145 states and 6150 transitions. [2020-10-28 18:42:14,000 INFO L78 Accepts]: Start accepts. Automaton has 4145 states and 6150 transitions. Word has length 104 [2020-10-28 18:42:14,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:14,000 INFO L481 AbstractCegarLoop]: Abstraction has 4145 states and 6150 transitions. [2020-10-28 18:42:14,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:42:14,000 INFO L276 IsEmpty]: Start isEmpty. Operand 4145 states and 6150 transitions. [2020-10-28 18:42:14,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 18:42:14,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:14,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:42:14,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 18:42:14,002 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:14,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:14,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1728631908, now seen corresponding path program 1 times [2020-10-28 18:42:14,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:14,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561870997] [2020-10-28 18:42:14,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:14,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:14,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:14,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:14,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:14,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:14,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:14,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:14,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:15,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:15,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:15,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:15,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:16,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:16,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:16,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:17,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:17,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:18,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:18,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:19,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:19,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 18:42:19,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-28 18:42:19,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 18:42:19,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:19,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:19,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:42:19,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 18:42:19,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 18:42:19,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:19,647 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:42:19,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:19,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:19,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:19,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:19,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:19,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:42:19,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:19,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:19,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:42:19,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:19,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:42:19,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:19,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:42:19,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561870997] [2020-10-28 18:42:19,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:19,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:42:19,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588790219] [2020-10-28 18:42:19,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:42:19,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:19,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:42:19,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:42:19,695 INFO L87 Difference]: Start difference. First operand 4145 states and 6150 transitions. Second operand 6 states. [2020-10-28 18:42:20,364 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 18:42:21,552 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 18:42:22,217 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 18:42:23,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:23,697 INFO L93 Difference]: Finished difference Result 10164 states and 15120 transitions. [2020-10-28 18:42:23,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:42:23,698 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-28 18:42:23,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:23,707 INFO L225 Difference]: With dead ends: 10164 [2020-10-28 18:42:23,707 INFO L226 Difference]: Without dead ends: 6565 [2020-10-28 18:42:23,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:42:23,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6565 states. [2020-10-28 18:42:24,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6565 to 5751. [2020-10-28 18:42:24,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5751 states. [2020-10-28 18:42:24,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5751 states to 5751 states and 8566 transitions. [2020-10-28 18:42:24,447 INFO L78 Accepts]: Start accepts. Automaton has 5751 states and 8566 transitions. Word has length 105 [2020-10-28 18:42:24,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:24,448 INFO L481 AbstractCegarLoop]: Abstraction has 5751 states and 8566 transitions. [2020-10-28 18:42:24,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:42:24,448 INFO L276 IsEmpty]: Start isEmpty. Operand 5751 states and 8566 transitions. [2020-10-28 18:42:24,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 18:42:24,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:24,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:42:24,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 18:42:24,450 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:24,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:24,450 INFO L82 PathProgramCache]: Analyzing trace with hash -996347846, now seen corresponding path program 1 times [2020-10-28 18:42:24,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:24,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347207742] [2020-10-28 18:42:24,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:24,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:24,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:24,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:24,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:24,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:24,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:25,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:25,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:27,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:27,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:27,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:27,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:29,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:29,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:29,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 18:42:29,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:42:29,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-28 18:42:29,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:29,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:29,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:42:29,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 18:42:29,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 18:42:29,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:30,123 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:42:30,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:30,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:30,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:30,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:30,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:30,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:42:30,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:30,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:30,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:42:30,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:30,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:42:30,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:30,164 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 18:42:30,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347207742] [2020-10-28 18:42:30,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:30,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:42:30,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123964329] [2020-10-28 18:42:30,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:42:30,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:30,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:42:30,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:42:30,167 INFO L87 Difference]: Start difference. First operand 5751 states and 8566 transitions. Second operand 6 states. [2020-10-28 18:42:30,811 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 18:42:31,996 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 18:42:32,661 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 18:42:34,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:34,363 INFO L93 Difference]: Finished difference Result 12836 states and 19096 transitions. [2020-10-28 18:42:34,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:42:34,363 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-28 18:42:34,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:34,371 INFO L225 Difference]: With dead ends: 12836 [2020-10-28 18:42:34,371 INFO L226 Difference]: Without dead ends: 7665 [2020-10-28 18:42:34,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:42:34,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7665 states. [2020-10-28 18:42:35,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7665 to 6787. [2020-10-28 18:42:35,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6787 states. [2020-10-28 18:42:35,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6787 states to 6787 states and 10114 transitions. [2020-10-28 18:42:35,250 INFO L78 Accepts]: Start accepts. Automaton has 6787 states and 10114 transitions. Word has length 105 [2020-10-28 18:42:35,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:35,250 INFO L481 AbstractCegarLoop]: Abstraction has 6787 states and 10114 transitions. [2020-10-28 18:42:35,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:42:35,251 INFO L276 IsEmpty]: Start isEmpty. Operand 6787 states and 10114 transitions. [2020-10-28 18:42:35,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 18:42:35,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:35,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:42:35,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 18:42:35,252 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:35,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:35,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1508502423, now seen corresponding path program 1 times [2020-10-28 18:42:35,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:35,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401799480] [2020-10-28 18:42:35,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:35,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:35,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:35,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:35,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:35,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:35,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:35,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:36,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:36,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:37,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:37,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:40,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:40,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 18:42:40,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:42:40,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:42:40,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:40,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:40,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:42:40,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 18:42:40,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 18:42:40,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:40,896 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:42:40,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:40,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:40,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:40,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:40,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:40,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:42:40,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:40,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:40,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:42:40,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:40,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:42:40,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:40,931 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 18:42:40,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401799480] [2020-10-28 18:42:40,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:40,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:42:40,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261850097] [2020-10-28 18:42:40,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:42:40,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:40,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:42:40,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:42:40,933 INFO L87 Difference]: Start difference. First operand 6787 states and 10114 transitions. Second operand 6 states. [2020-10-28 18:42:41,603 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 18:42:42,788 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 18:42:43,431 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 18:42:45,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:45,270 INFO L93 Difference]: Finished difference Result 15136 states and 22506 transitions. [2020-10-28 18:42:45,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:42:45,271 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-28 18:42:45,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:45,281 INFO L225 Difference]: With dead ends: 15136 [2020-10-28 18:42:45,281 INFO L226 Difference]: Without dead ends: 8933 [2020-10-28 18:42:45,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:42:45,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8933 states. [2020-10-28 18:42:46,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8933 to 7831. [2020-10-28 18:42:46,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7831 states. [2020-10-28 18:42:46,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7831 states to 7831 states and 11676 transitions. [2020-10-28 18:42:46,317 INFO L78 Accepts]: Start accepts. Automaton has 7831 states and 11676 transitions. Word has length 105 [2020-10-28 18:42:46,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:46,318 INFO L481 AbstractCegarLoop]: Abstraction has 7831 states and 11676 transitions. [2020-10-28 18:42:46,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:42:46,318 INFO L276 IsEmpty]: Start isEmpty. Operand 7831 states and 11676 transitions. [2020-10-28 18:42:46,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 18:42:46,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:46,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:42:46,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 18:42:46,319 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:46,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:46,320 INFO L82 PathProgramCache]: Analyzing trace with hash -957668627, now seen corresponding path program 1 times [2020-10-28 18:42:46,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:46,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726464466] [2020-10-28 18:42:46,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:46,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:46,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:46,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:46,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:46,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:46,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:46,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:47,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:47,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:47,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:47,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:48,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:48,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:49,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:51,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:51,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 18:42:51,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:42:51,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 18:42:51,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:51,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:51,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:42:51,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 18:42:51,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 18:42:51,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:51,971 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:42:51,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:51,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:51,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:51,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:51,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:51,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:42:51,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:51,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:51,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:42:51,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:51,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:42:51,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:52,014 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 18:42:52,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726464466] [2020-10-28 18:42:52,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:52,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:42:52,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364778587] [2020-10-28 18:42:52,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:42:52,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:52,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:42:52,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:42:52,017 INFO L87 Difference]: Start difference. First operand 7831 states and 11676 transitions. Second operand 6 states. [2020-10-28 18:42:52,680 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 18:42:53,860 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 18:42:54,526 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 18:42:56,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:56,643 INFO L93 Difference]: Finished difference Result 17775 states and 26430 transitions. [2020-10-28 18:42:56,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:42:56,644 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-28 18:42:56,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:56,654 INFO L225 Difference]: With dead ends: 17775 [2020-10-28 18:42:56,654 INFO L226 Difference]: Without dead ends: 10540 [2020-10-28 18:42:56,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:42:56,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10540 states. [2020-10-28 18:42:57,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10540 to 8902. [2020-10-28 18:42:57,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8902 states. [2020-10-28 18:42:57,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8902 states to 8902 states and 13280 transitions. [2020-10-28 18:42:57,852 INFO L78 Accepts]: Start accepts. Automaton has 8902 states and 13280 transitions. Word has length 105 [2020-10-28 18:42:57,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:57,853 INFO L481 AbstractCegarLoop]: Abstraction has 8902 states and 13280 transitions. [2020-10-28 18:42:57,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:42:57,853 INFO L276 IsEmpty]: Start isEmpty. Operand 8902 states and 13280 transitions. [2020-10-28 18:42:57,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 18:42:57,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:57,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:42:57,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 18:42:57,854 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:57,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:57,854 INFO L82 PathProgramCache]: Analyzing trace with hash -950060658, now seen corresponding path program 1 times [2020-10-28 18:42:57,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:57,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975025528] [2020-10-28 18:42:57,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:57,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:57,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:58,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:58,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:58,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:58,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:58,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:59,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:59,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:59,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:59,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:59,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:00,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:01,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:02,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:02,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:02,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:02,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 18:43:02,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 18:43:02,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 18:43:02,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:02,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:02,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:43:02,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 18:43:02,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 18:43:02,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:03,497 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:43:03,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:43:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:03,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:03,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:03,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:43:03,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:43:03,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:43:03,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:03,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:03,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:43:03,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:43:03,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:43:03,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:03,541 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 18:43:03,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975025528] [2020-10-28 18:43:03,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:43:03,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:43:03,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980331632] [2020-10-28 18:43:03,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:43:03,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:43:03,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:43:03,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:43:03,543 INFO L87 Difference]: Start difference. First operand 8902 states and 13280 transitions. Second operand 6 states. [2020-10-28 18:43:04,222 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 18:43:05,411 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 18:43:06,006 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 18:43:08,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:43:08,007 INFO L93 Difference]: Finished difference Result 20557 states and 30568 transitions. [2020-10-28 18:43:08,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:43:08,009 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-28 18:43:08,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:43:08,022 INFO L225 Difference]: With dead ends: 20557 [2020-10-28 18:43:08,022 INFO L226 Difference]: Without dead ends: 12290 [2020-10-28 18:43:08,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:43:08,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12290 states. [2020-10-28 18:43:09,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12290 to 9956. [2020-10-28 18:43:09,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9956 states. [2020-10-28 18:43:09,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9956 states to 9956 states and 14858 transitions. [2020-10-28 18:43:09,379 INFO L78 Accepts]: Start accepts. Automaton has 9956 states and 14858 transitions. Word has length 105 [2020-10-28 18:43:09,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:43:09,380 INFO L481 AbstractCegarLoop]: Abstraction has 9956 states and 14858 transitions. [2020-10-28 18:43:09,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:43:09,380 INFO L276 IsEmpty]: Start isEmpty. Operand 9956 states and 14858 transitions. [2020-10-28 18:43:09,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 18:43:09,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:43:09,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:43:09,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 18:43:09,381 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:43:09,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:43:09,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1100698684, now seen corresponding path program 1 times [2020-10-28 18:43:09,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:43:09,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229218526] [2020-10-28 18:43:09,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:43:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:09,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:09,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:09,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:09,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:09,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:10,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:10,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:12,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:12,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:12,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:13,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:13,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:13,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:14,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:14,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 18:43:14,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:43:14,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 18:43:14,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:14,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:14,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:43:14,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-28 18:43:14,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 18:43:14,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:15,038 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:43:15,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:43:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:15,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:15,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:15,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:43:15,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:43:15,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:43:15,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:15,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:43:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:43:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:43:15,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:15,067 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 18:43:15,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229218526] [2020-10-28 18:43:15,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:43:15,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:43:15,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261440250] [2020-10-28 18:43:15,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:43:15,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:43:15,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:43:15,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:43:15,069 INFO L87 Difference]: Start difference. First operand 9956 states and 14858 transitions. Second operand 5 states. [2020-10-28 18:43:18,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:43:18,267 INFO L93 Difference]: Finished difference Result 16795 states and 24984 transitions. [2020-10-28 18:43:18,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:43:18,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-28 18:43:18,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:43:18,286 INFO L225 Difference]: With dead ends: 16795 [2020-10-28 18:43:18,286 INFO L226 Difference]: Without dead ends: 16792 [2020-10-28 18:43:18,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:43:18,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16792 states. [2020-10-28 18:43:19,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16792 to 10100. [2020-10-28 18:43:19,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10100 states. [2020-10-28 18:43:19,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10100 states to 10100 states and 14994 transitions. [2020-10-28 18:43:19,738 INFO L78 Accepts]: Start accepts. Automaton has 10100 states and 14994 transitions. Word has length 106 [2020-10-28 18:43:19,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:43:19,738 INFO L481 AbstractCegarLoop]: Abstraction has 10100 states and 14994 transitions. [2020-10-28 18:43:19,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:43:19,738 INFO L276 IsEmpty]: Start isEmpty. Operand 10100 states and 14994 transitions. [2020-10-28 18:43:19,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 18:43:19,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:43:19,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:43:19,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 18:43:19,740 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:43:19,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:43:19,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1228000551, now seen corresponding path program 1 times [2020-10-28 18:43:19,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:43:19,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893293259] [2020-10-28 18:43:19,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:43:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:19,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:19,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:19,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:19,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:20,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:20,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:20,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:21,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:21,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:21,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:22,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:22,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:22,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:24,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:24,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 18:43:24,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:43:24,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 18:43:24,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:24,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:24,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 18:43:24,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:43:24,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 18:43:24,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:25,579 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:43:25,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:43:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:25,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:25,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:25,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:43:25,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:43:25,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 18:43:25,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:25,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:25,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:43:25,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:43:25,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:43:25,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:25,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:43:25,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893293259] [2020-10-28 18:43:25,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:43:25,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 18:43:25,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659407584] [2020-10-28 18:43:25,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:43:25,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:43:25,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:43:25,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:43:25,641 INFO L87 Difference]: Start difference. First operand 10100 states and 14994 transitions. Second operand 11 states. [2020-10-28 18:43:26,386 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 18:43:28,296 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-28 18:43:28,911 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-28 18:43:32,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:43:32,614 INFO L93 Difference]: Finished difference Result 30051 states and 44513 transitions. [2020-10-28 18:43:32,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 18:43:32,615 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 106 [2020-10-28 18:43:32,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:43:32,635 INFO L225 Difference]: With dead ends: 30051 [2020-10-28 18:43:32,635 INFO L226 Difference]: Without dead ends: 20280 [2020-10-28 18:43:32,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2020-10-28 18:43:32,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20280 states. [2020-10-28 18:43:34,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20280 to 10100. [2020-10-28 18:43:34,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10100 states. [2020-10-28 18:43:34,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10100 states to 10100 states and 14981 transitions. [2020-10-28 18:43:34,358 INFO L78 Accepts]: Start accepts. Automaton has 10100 states and 14981 transitions. Word has length 106 [2020-10-28 18:43:34,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:43:34,359 INFO L481 AbstractCegarLoop]: Abstraction has 10100 states and 14981 transitions. [2020-10-28 18:43:34,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 18:43:34,359 INFO L276 IsEmpty]: Start isEmpty. Operand 10100 states and 14981 transitions. [2020-10-28 18:43:34,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 18:43:34,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:43:34,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:43:34,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 18:43:34,360 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:43:34,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:43:34,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1007871066, now seen corresponding path program 1 times [2020-10-28 18:43:34,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:43:34,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093996323] [2020-10-28 18:43:34,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:43:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:34,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:34,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:34,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:34,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:34,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:35,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:35,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:36,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:36,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:36,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:36,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:37,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:39,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:39,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:39,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 18:43:39,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:43:39,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:43:39,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:39,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:39,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 18:43:39,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:43:39,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 18:43:39,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:40,187 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:43:40,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:43:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:40,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:40,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:40,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:43:40,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:43:40,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 18:43:40,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:40,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:40,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:43:40,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:43:40,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:43:40,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:40,248 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 18:43:40,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093996323] [2020-10-28 18:43:40,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:43:40,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 18:43:40,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838028176] [2020-10-28 18:43:40,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:43:40,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:43:40,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:43:40,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:43:40,250 INFO L87 Difference]: Start difference. First operand 10100 states and 14981 transitions. Second operand 11 states. [2020-10-28 18:43:41,021 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-28 18:43:43,047 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:43:43,707 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 194