/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.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:41:20,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:41:20,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:41:20,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:41:20,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:41:20,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:41:20,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:41:20,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:41:20,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:41:20,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:41:20,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:41:20,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:41:20,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:41:20,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:41:20,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:41:20,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:41:20,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:41:20,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:41:20,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:41:20,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:41:20,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:41:20,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:41:20,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:41:20,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:41:20,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:41:20,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:41:20,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:41:20,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:41:20,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:41:20,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:41:20,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:41:20,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:41:20,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:41:20,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:41:20,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:41:20,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:41:20,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:41:20,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:41:20,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:41:20,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:41:20,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:41:20,613 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 18:41:20,668 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:41:20,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:41:20,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:41:20,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:41:20,674 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:41:20,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:41:20,675 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:41:20,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:41:20,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:41:20,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:41:20,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:41:20,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:41:20,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:41:20,677 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:41:20,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:41:20,678 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:41:20,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:41:20,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:41:20,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:41:20,679 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:41:20,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:41:20,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:41:20,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:41:20,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:41:20,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:41:20,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:41:20,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:41:20,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:41:20,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:41:20,681 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:41:21,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:41:21,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:41:21,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:41:21,175 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:41:21,175 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:41:21,176 INFO L432 ainManager$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.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 18:41:21,267 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4064300e8/37d6c89d452b45efadf73ea22dd448b2/FLAG2c04554b1 [2020-10-28 18:41:22,025 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:41:22,026 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 18:41:22,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4064300e8/37d6c89d452b45efadf73ea22dd448b2/FLAG2c04554b1 [2020-10-28 18:41:22,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4064300e8/37d6c89d452b45efadf73ea22dd448b2 [2020-10-28 18:41:22,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:41:22,321 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:41:22,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:41:22,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:41:22,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:41:22,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:41:22" (1/1) ... [2020-10-28 18:41:22,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bb7af0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:41:22, skipping insertion in model container [2020-10-28 18:41:22,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:41:22" (1/1) ... [2020-10-28 18:41:22,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:41:22,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:41:22,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:41:22,769 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:41:22,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:41:22,953 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:41:22,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:41:22 WrapperNode [2020-10-28 18:41:22,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:41:22,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:41:22,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:41:22,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:41:22,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:41:22" (1/1) ... [2020-10-28 18:41:22,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:41:22" (1/1) ... [2020-10-28 18:41:22,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:41:22" (1/1) ... [2020-10-28 18:41:22,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:41:22" (1/1) ... [2020-10-28 18:41:23,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:41:22" (1/1) ... [2020-10-28 18:41:23,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:41:22" (1/1) ... [2020-10-28 18:41:23,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:41:22" (1/1) ... [2020-10-28 18:41:23,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:41:23,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:41:23,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:41:23,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:41:23,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:41:22" (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 18:41:23,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:41:23,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:41:23,127 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:41:23,127 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:41:23,127 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:41:23,127 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:41:23,127 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:41:23,128 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:41:23,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:41:23,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:41:23,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:41:23,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 18:41:23,128 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:41:23,129 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:41:23,129 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:41:23,129 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:41:23,129 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:41:23,129 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:41:23,129 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:41:23,130 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:41:23,130 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 18:41:23,130 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-28 18:41:23,130 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:41:23,130 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:41:23,130 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:41:23,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:41:23,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:41:23,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:41:23,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:41:23,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:41:23,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:41:24,248 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:41:24,248 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:41:24,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:41:24 BoogieIcfgContainer [2020-10-28 18:41:24,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:41:24,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:41:24,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:41:24,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:41:24,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:41:22" (1/3) ... [2020-10-28 18:41:24,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e0161f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:41:24, skipping insertion in model container [2020-10-28 18:41:24,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:41:22" (2/3) ... [2020-10-28 18:41:24,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e0161f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:41:24, skipping insertion in model container [2020-10-28 18:41:24,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:41:24" (3/3) ... [2020-10-28 18:41:24,260 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 18:41:24,272 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:41:24,278 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:41:24,292 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:41:24,322 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:41:24,322 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:41:24,322 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:41:24,322 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:41:24,322 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:41:24,322 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:41:24,323 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:41:24,323 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:41:24,345 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-10-28 18:41:24,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 18:41:24,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:41:24,362 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] [2020-10-28 18:41:24,363 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:41:24,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:41:24,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1904996340, now seen corresponding path program 1 times [2020-10-28 18:41:24,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:41:24,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54658731] [2020-10-28 18:41:24,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:41:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:24,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:25,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:25,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:25,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:25,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:25,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:25,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:26,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:26,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:27,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:27,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:27,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:28,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:28,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:29,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:29,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:29,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:29,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:29,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:29,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 18:41:29,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 18:41:29,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 18:41:29,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:29,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:29,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:41:29,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 18:41:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 18:41:29,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 18:41:30,247 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:41:30,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:41:30,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:30,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:30,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:30,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:41:30,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:41:30,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 18:41:30,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:30,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:41:30,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:41:30,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:41:30,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:41:30,333 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 18:41:30,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54658731] [2020-10-28 18:41:30,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:41:30,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:41:30,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064290713] [2020-10-28 18:41:30,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:41:30,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:41:30,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:41:30,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:41:30,361 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 4 states. [2020-10-28 18:41:30,696 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:41:32,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:41:32,102 INFO L93 Difference]: Finished difference Result 360 states and 593 transitions. [2020-10-28 18:41:32,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:41:32,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2020-10-28 18:41:32,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:41:32,119 INFO L225 Difference]: With dead ends: 360 [2020-10-28 18:41:32,119 INFO L226 Difference]: Without dead ends: 273 [2020-10-28 18:41:32,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:41:32,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-28 18:41:32,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 270. [2020-10-28 18:41:32,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-28 18:41:32,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 389 transitions. [2020-10-28 18:41:32,253 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 389 transitions. Word has length 95 [2020-10-28 18:41:32,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:41:32,257 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 389 transitions. [2020-10-28 18:41:32,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:41:32,257 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 389 transitions. [2020-10-28 18:41:32,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 18:41:32,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:41:32,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:41:32,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:41:32,270 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:41:32,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:41:32,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1490450090, now seen corresponding path program 1 times [2020-10-28 18:41:32,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:41:32,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999115457] [2020-10-28 18:41:32,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:41:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:32,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:32,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:32,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:32,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:32,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:32,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:33,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:33,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:33,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:34,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:34,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:34,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:35,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:35,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:35,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:35,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:36,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:37,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:37,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 18:41:37,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 18:41:37,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:41:37,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:37,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:41:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:41:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 18:41:37,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:41:37,738 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:41:37,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:41:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:37,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:37,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:37,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:41:37,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:41:37,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 18:41:37,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:37,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:37,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:41:37,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:41:37,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:41:37,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:41:37,875 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 18:41:37,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999115457] [2020-10-28 18:41:37,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:41:37,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:41:37,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659363780] [2020-10-28 18:41:37,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:41:37,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:41:37,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:41:37,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:41:37,883 INFO L87 Difference]: Start difference. First operand 270 states and 389 transitions. Second operand 6 states. [2020-10-28 18:41:38,185 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:41:38,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:41:38,983 INFO L93 Difference]: Finished difference Result 470 states and 702 transitions. [2020-10-28 18:41:38,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:41:38,984 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-28 18:41:38,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:41:38,987 INFO L225 Difference]: With dead ends: 470 [2020-10-28 18:41:38,987 INFO L226 Difference]: Without dead ends: 270 [2020-10-28 18:41:38,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:41:38,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-28 18:41:39,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2020-10-28 18:41:39,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-28 18:41:39,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 386 transitions. [2020-10-28 18:41:39,015 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 386 transitions. Word has length 97 [2020-10-28 18:41:39,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:41:39,016 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 386 transitions. [2020-10-28 18:41:39,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:41:39,016 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 386 transitions. [2020-10-28 18:41:39,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 18:41:39,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:41:39,018 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] [2020-10-28 18:41:39,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:41:39,019 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:41:39,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:41:39,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1090930890, now seen corresponding path program 1 times [2020-10-28 18:41:39,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:41:39,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437386764] [2020-10-28 18:41:39,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:41:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:39,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:39,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:39,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:39,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:39,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:39,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:39,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:39,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:40,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:40,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:40,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:41,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:44,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:44,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 18:41:44,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:41:44,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 18:41:44,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:44,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:44,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:41:44,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:41:44,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 18:41:44,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:44,561 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:41:44,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:41:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:44,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:44,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:44,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:41:44,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:41:44,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 18:41:44,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:44,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:44,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:41:44,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:41:44,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:41:44,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:44,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:41:44,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437386764] [2020-10-28 18:41:44,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:41:44,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:41:44,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436198187] [2020-10-28 18:41:44,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:41:44,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:41:44,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:41:44,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:41:44,671 INFO L87 Difference]: Start difference. First operand 270 states and 386 transitions. Second operand 6 states. [2020-10-28 18:41:45,015 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 18:41:45,822 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:41:46,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:41:46,262 INFO L93 Difference]: Finished difference Result 621 states and 930 transitions. [2020-10-28 18:41:46,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:41:46,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-10-28 18:41:46,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:41:46,273 INFO L225 Difference]: With dead ends: 621 [2020-10-28 18:41:46,273 INFO L226 Difference]: Without dead ends: 417 [2020-10-28 18:41:46,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-28 18:41:46,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-10-28 18:41:46,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 414. [2020-10-28 18:41:46,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-10-28 18:41:46,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 610 transitions. [2020-10-28 18:41:46,346 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 610 transitions. Word has length 98 [2020-10-28 18:41:46,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:41:46,349 INFO L481 AbstractCegarLoop]: Abstraction has 414 states and 610 transitions. [2020-10-28 18:41:46,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:41:46,349 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 610 transitions. [2020-10-28 18:41:46,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 18:41:46,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:41:46,353 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 18:41:46,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:41:46,354 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:41:46,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:41:46,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1738092103, now seen corresponding path program 1 times [2020-10-28 18:41:46,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:41:46,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503195634] [2020-10-28 18:41:46,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:41:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:46,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:46,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:46,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:46,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:46,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:46,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:47,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:47,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:51,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:51,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 18:41:51,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:41:51,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 18:41:51,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:51,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:41:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:41:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 18:41:51,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:51,878 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:41:51,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:41:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:51,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:51,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:51,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:41:51,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:41:51,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 18:41:51,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:51,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:51,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:41:51,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:41:51,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:41:51,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:41:51,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:41:51,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503195634] [2020-10-28 18:41:51,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:41:51,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:41:51,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66949160] [2020-10-28 18:41:51,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:41:51,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:41:51,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:41:51,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:41:51,988 INFO L87 Difference]: Start difference. First operand 414 states and 610 transitions. Second operand 6 states. [2020-10-28 18:41:52,331 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:41:53,100 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:41:53,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:41:53,558 INFO L93 Difference]: Finished difference Result 1065 states and 1620 transitions. [2020-10-28 18:41:53,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:41:53,559 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-28 18:41:53,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:41:53,564 INFO L225 Difference]: With dead ends: 1065 [2020-10-28 18:41:53,565 INFO L226 Difference]: Without dead ends: 713 [2020-10-28 18:41:53,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:41:53,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-10-28 18:41:53,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 710. [2020-10-28 18:41:53,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 710 states. [2020-10-28 18:41:53,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1069 transitions. [2020-10-28 18:41:53,642 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1069 transitions. Word has length 99 [2020-10-28 18:41:53,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:41:53,645 INFO L481 AbstractCegarLoop]: Abstraction has 710 states and 1069 transitions. [2020-10-28 18:41:53,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:41:53,645 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1069 transitions. [2020-10-28 18:41:53,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 18:41:53,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:41:53,647 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 18:41:53,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:41:53,648 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:41:53,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:41:53,648 INFO L82 PathProgramCache]: Analyzing trace with hash -124718811, now seen corresponding path program 1 times [2020-10-28 18:41:53,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:41:53,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540501932] [2020-10-28 18:41:53,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:41:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:53,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:53,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:53,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:53,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:54,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:54,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:54,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:55,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:55,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:56,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:57,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:57,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:58,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:58,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 18:41:58,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:41:58,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 18:41:58,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:58,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:58,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:41:58,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:41:58,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 18:41:58,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 18:41:59,032 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:41:59,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:41:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:59,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:59,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:59,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:41:59,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:41:59,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:41:59,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:59,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:59,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:41:59,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:41:59,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:41:59,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:59,077 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 18:41:59,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540501932] [2020-10-28 18:41:59,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:41:59,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:41:59,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31323427] [2020-10-28 18:41:59,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:41:59,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:41:59,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:41:59,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:41:59,080 INFO L87 Difference]: Start difference. First operand 710 states and 1069 transitions. Second operand 6 states. [2020-10-28 18:41:59,405 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-28 18:42:00,608 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 18:42:00,944 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-28 18:42:02,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:02,382 INFO L93 Difference]: Finished difference Result 4764 states and 7388 transitions. [2020-10-28 18:42:02,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 18:42:02,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2020-10-28 18:42:02,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:02,408 INFO L225 Difference]: With dead ends: 4764 [2020-10-28 18:42:02,408 INFO L226 Difference]: Without dead ends: 4184 [2020-10-28 18:42:02,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 18:42:02,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4184 states. [2020-10-28 18:42:02,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4184 to 2596. [2020-10-28 18:42:02,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2596 states. [2020-10-28 18:42:02,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 3996 transitions. [2020-10-28 18:42:02,619 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 3996 transitions. Word has length 100 [2020-10-28 18:42:02,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:02,620 INFO L481 AbstractCegarLoop]: Abstraction has 2596 states and 3996 transitions. [2020-10-28 18:42:02,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:42:02,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 3996 transitions. [2020-10-28 18:42:02,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 18:42:02,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:02,623 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 18:42:02,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:42:02,623 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:02,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:02,624 INFO L82 PathProgramCache]: Analyzing trace with hash -424151500, now seen corresponding path program 1 times [2020-10-28 18:42:02,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:02,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633186944] [2020-10-28 18:42:02,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:02,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:02,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:02,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:02,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:03,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:03,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:03,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:03,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:04,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:04,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:04,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:04,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:06,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:07,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:07,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 18:42:07,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:42:07,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 18:42:07,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:07,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:07,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:42:07,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:42:07,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 18:42:07,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:07,897 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-28 18:42:08,188 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:42:08,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:08,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:08,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:08,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:08,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:08,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:42:08,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:08,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:42:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:42:08,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:08,253 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 18:42:08,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633186944] [2020-10-28 18:42:08,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:08,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:42:08,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096298391] [2020-10-28 18:42:08,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:42:08,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:08,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:42:08,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:42:08,256 INFO L87 Difference]: Start difference. First operand 2596 states and 3996 transitions. Second operand 8 states. [2020-10-28 18:42:08,606 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-28 18:42:09,791 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 18:42:10,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:10,833 INFO L93 Difference]: Finished difference Result 6874 states and 10664 transitions. [2020-10-28 18:42:10,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 18:42:10,834 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2020-10-28 18:42:10,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:10,861 INFO L225 Difference]: With dead ends: 6874 [2020-10-28 18:42:10,861 INFO L226 Difference]: Without dead ends: 4581 [2020-10-28 18:42:10,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-28 18:42:10,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4581 states. [2020-10-28 18:42:11,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4581 to 2454. [2020-10-28 18:42:11,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2454 states. [2020-10-28 18:42:11,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2454 states to 2454 states and 3774 transitions. [2020-10-28 18:42:11,219 INFO L78 Accepts]: Start accepts. Automaton has 2454 states and 3774 transitions. Word has length 100 [2020-10-28 18:42:11,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:11,220 INFO L481 AbstractCegarLoop]: Abstraction has 2454 states and 3774 transitions. [2020-10-28 18:42:11,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:42:11,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2454 states and 3774 transitions. [2020-10-28 18:42:11,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 18:42:11,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:11,225 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 18:42:11,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:42:11,225 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:11,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:11,226 INFO L82 PathProgramCache]: Analyzing trace with hash -771812696, now seen corresponding path program 1 times [2020-10-28 18:42:11,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:11,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211871559] [2020-10-28 18:42:11,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:11,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:11,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:11,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:11,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:11,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:12,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:12,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:12,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:13,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:14,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:15,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:15,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:16,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:16,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 18:42:16,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:42:16,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 18:42:16,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:16,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:16,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:42:16,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:42:16,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 18:42:16,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:16,621 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:42:16,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:16,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:16,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:16,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:16,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:16,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 18:42:16,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:16,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:16,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:42:16,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:16,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:42:16,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:16,687 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 18:42:16,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211871559] [2020-10-28 18:42:16,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:16,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:42:16,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521155294] [2020-10-28 18:42:16,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:42:16,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:16,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:42:16,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:42:16,689 INFO L87 Difference]: Start difference. First operand 2454 states and 3774 transitions. Second operand 6 states. [2020-10-28 18:42:17,065 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:42:18,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:18,129 INFO L93 Difference]: Finished difference Result 4842 states and 7477 transitions. [2020-10-28 18:42:18,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:42:18,130 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-28 18:42:18,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:18,143 INFO L225 Difference]: With dead ends: 4842 [2020-10-28 18:42:18,143 INFO L226 Difference]: Without dead ends: 2454 [2020-10-28 18:42:18,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:42:18,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2020-10-28 18:42:18,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 2454. [2020-10-28 18:42:18,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2454 states. [2020-10-28 18:42:18,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2454 states to 2454 states and 3740 transitions. [2020-10-28 18:42:18,421 INFO L78 Accepts]: Start accepts. Automaton has 2454 states and 3740 transitions. Word has length 101 [2020-10-28 18:42:18,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:18,421 INFO L481 AbstractCegarLoop]: Abstraction has 2454 states and 3740 transitions. [2020-10-28 18:42:18,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:42:18,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2454 states and 3740 transitions. [2020-10-28 18:42:18,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-28 18:42:18,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:18,423 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 18:42:18,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:42:18,424 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:18,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:18,425 INFO L82 PathProgramCache]: Analyzing trace with hash 879007653, now seen corresponding path program 1 times [2020-10-28 18:42:18,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:18,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554418465] [2020-10-28 18:42:18,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:18,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:18,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:18,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:18,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:19,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:19,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:19,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:21,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:21,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:21,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:21,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:23,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:23,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 18:42:23,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:42:23,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 18:42:23,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:23,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:23,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:42:23,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:42:23,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 18:42:23,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:23,828 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:42:23,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:23,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:23,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:23,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:23,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:23,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 18:42:23,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:23,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:23,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:42:23,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:23,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:42:23,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:23,932 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 18:42:23,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554418465] [2020-10-28 18:42:23,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:23,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:42:23,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655059548] [2020-10-28 18:42:23,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:42:23,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:23,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:42:23,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:42:23,934 INFO L87 Difference]: Start difference. First operand 2454 states and 3740 transitions. Second operand 6 states. [2020-10-28 18:42:24,291 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:42:25,139 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:42:25,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:25,941 INFO L93 Difference]: Finished difference Result 7135 states and 10937 transitions. [2020-10-28 18:42:25,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:42:25,941 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-28 18:42:25,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:25,974 INFO L225 Difference]: With dead ends: 7135 [2020-10-28 18:42:25,974 INFO L226 Difference]: Without dead ends: 4739 [2020-10-28 18:42:25,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:42:25,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4739 states. [2020-10-28 18:42:26,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4739 to 4736. [2020-10-28 18:42:26,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4736 states. [2020-10-28 18:42:26,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4736 states to 4736 states and 7222 transitions. [2020-10-28 18:42:26,512 INFO L78 Accepts]: Start accepts. Automaton has 4736 states and 7222 transitions. Word has length 102 [2020-10-28 18:42:26,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:26,512 INFO L481 AbstractCegarLoop]: Abstraction has 4736 states and 7222 transitions. [2020-10-28 18:42:26,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:42:26,513 INFO L276 IsEmpty]: Start isEmpty. Operand 4736 states and 7222 transitions. [2020-10-28 18:42:26,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 18:42:26,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:26,516 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 18:42:26,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:42:26,516 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:26,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:26,517 INFO L82 PathProgramCache]: Analyzing trace with hash 2095553495, now seen corresponding path program 1 times [2020-10-28 18:42:26,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:26,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940400172] [2020-10-28 18:42:26,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:26,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:26,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:26,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:26,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:28,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:28,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:28,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:28,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:28,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:29,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:29,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:29,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:29,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:30,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:31,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:31,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:31,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:31,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:31,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 18:42:31,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 18:42:31,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:42:31,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:31,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:31,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:42:31,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 18:42:31,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 18:42:31,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:31,909 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:42:31,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:31,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:31,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:31,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:31,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:31,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:42:31,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:31,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:31,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:42:31,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:31,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:42:31,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:31,960 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 18:42:31,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940400172] [2020-10-28 18:42:31,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:31,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:42:31,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799381412] [2020-10-28 18:42:31,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:42:31,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:31,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:42:31,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:42:31,963 INFO L87 Difference]: Start difference. First operand 4736 states and 7222 transitions. Second operand 6 states. [2020-10-28 18:42:32,329 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:42:33,166 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 18:42:33,539 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:42:34,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:34,734 INFO L93 Difference]: Finished difference Result 12804 states and 19572 transitions. [2020-10-28 18:42:34,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:42:34,734 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-28 18:42:34,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:34,777 INFO L225 Difference]: With dead ends: 12804 [2020-10-28 18:42:34,777 INFO L226 Difference]: Without dead ends: 8625 [2020-10-28 18:42:34,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:42:34,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8625 states. [2020-10-28 18:42:35,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8625 to 6971. [2020-10-28 18:42:35,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6971 states. [2020-10-28 18:42:35,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6971 states to 6971 states and 10670 transitions. [2020-10-28 18:42:35,589 INFO L78 Accepts]: Start accepts. Automaton has 6971 states and 10670 transitions. Word has length 103 [2020-10-28 18:42:35,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:35,589 INFO L481 AbstractCegarLoop]: Abstraction has 6971 states and 10670 transitions. [2020-10-28 18:42:35,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:42:35,590 INFO L276 IsEmpty]: Start isEmpty. Operand 6971 states and 10670 transitions. [2020-10-28 18:42:35,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 18:42:35,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:35,593 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 18:42:35,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:42:35,594 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:35,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:35,594 INFO L82 PathProgramCache]: Analyzing trace with hash -847386588, now seen corresponding path program 1 times [2020-10-28 18:42:35,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:35,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264091830] [2020-10-28 18:42:35,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:35,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:35,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:35,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:35,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:36,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:36,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:36,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:37,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:37,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:37,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:38,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:38,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:38,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:38,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:39,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:39,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:39,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:40,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:40,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:40,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:40,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:40,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 18:42:40,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-28 18:42:40,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 18:42:40,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:40,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:40,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:42:40,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:42:40,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 18:42:40,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:40,957 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:42:40,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:40,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:40,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:40,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:40,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:40,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 18:42:40,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:40,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:42:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:42:40,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:41,008 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 18:42:41,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264091830] [2020-10-28 18:42:41,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:41,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:42:41,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231452643] [2020-10-28 18:42:41,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:42:41,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:41,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:42:41,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:42:41,011 INFO L87 Difference]: Start difference. First operand 6971 states and 10670 transitions. Second operand 6 states. [2020-10-28 18:42:41,385 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 18:42:42,411 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:42:43,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:43,291 INFO L93 Difference]: Finished difference Result 10129 states and 15530 transitions. [2020-10-28 18:42:43,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:42:43,292 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-28 18:42:43,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:43,311 INFO L225 Difference]: With dead ends: 10129 [2020-10-28 18:42:43,311 INFO L226 Difference]: Without dead ends: 5179 [2020-10-28 18:42:43,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-28 18:42:43,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5179 states. [2020-10-28 18:42:43,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5179 to 3588. [2020-10-28 18:42:43,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3588 states. [2020-10-28 18:42:43,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3588 states to 3588 states and 5461 transitions. [2020-10-28 18:42:43,850 INFO L78 Accepts]: Start accepts. Automaton has 3588 states and 5461 transitions. Word has length 103 [2020-10-28 18:42:43,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:43,850 INFO L481 AbstractCegarLoop]: Abstraction has 3588 states and 5461 transitions. [2020-10-28 18:42:43,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:42:43,851 INFO L276 IsEmpty]: Start isEmpty. Operand 3588 states and 5461 transitions. [2020-10-28 18:42:43,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 18:42:43,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:43,853 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 18:42:43,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 18:42:43,854 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:43,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:43,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1686877121, now seen corresponding path program 1 times [2020-10-28 18:42:43,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:43,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233979147] [2020-10-28 18:42:43,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:43,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:43,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:44,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:44,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:45,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:45,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:45,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:45,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:46,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:46,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:46,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:48,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:48,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:48,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 18:42:48,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:42:48,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 18:42:48,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:48,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:48,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:42:48,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 18:42:48,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 18:42:48,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:49,252 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:42:49,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:49,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:49,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:49,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:49,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:49,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:42:49,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:49,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:49,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:42:49,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:49,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:42:49,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:49,299 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 18:42:49,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233979147] [2020-10-28 18:42:49,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:49,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:42:49,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612184113] [2020-10-28 18:42:49,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:42:49,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:49,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:42:49,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:42:49,301 INFO L87 Difference]: Start difference. First operand 3588 states and 5461 transitions. Second operand 6 states. [2020-10-28 18:42:49,673 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:42:50,497 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 18:42:50,873 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:42:52,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:52,083 INFO L93 Difference]: Finished difference Result 10428 states and 15887 transitions. [2020-10-28 18:42:52,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:42:52,085 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-28 18:42:52,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:52,099 INFO L225 Difference]: With dead ends: 10428 [2020-10-28 18:42:52,100 INFO L226 Difference]: Without dead ends: 7273 [2020-10-28 18:42:52,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:42:52,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7273 states. [2020-10-28 18:42:52,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7273 to 5771. [2020-10-28 18:42:52,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5771 states. [2020-10-28 18:42:52,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5771 states to 5771 states and 8817 transitions. [2020-10-28 18:42:52,738 INFO L78 Accepts]: Start accepts. Automaton has 5771 states and 8817 transitions. Word has length 104 [2020-10-28 18:42:52,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:52,739 INFO L481 AbstractCegarLoop]: Abstraction has 5771 states and 8817 transitions. [2020-10-28 18:42:52,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:42:52,739 INFO L276 IsEmpty]: Start isEmpty. Operand 5771 states and 8817 transitions. [2020-10-28 18:42:52,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 18:42:52,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:52,742 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 18:42:52,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 18:42:52,742 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:52,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:52,743 INFO L82 PathProgramCache]: Analyzing trace with hash -696055785, now seen corresponding path program 1 times [2020-10-28 18:42:52,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:52,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602183939] [2020-10-28 18:42:52,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:52,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:52,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:52,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:52,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:53,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:53,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:54,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:54,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:55,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:55,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:55,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:55,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:57,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:57,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:57,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 18:42:57,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:42:57,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 18:42:57,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:57,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:57,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:42:57,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 18:42:57,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 18:42:57,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:58,119 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:42:58,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:58,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:58,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:58,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:58,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:58,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:42:58,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:58,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:58,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:42:58,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:58,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:42:58,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:58,164 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 18:42:58,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602183939] [2020-10-28 18:42:58,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:58,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:42:58,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488731355] [2020-10-28 18:42:58,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:42:58,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:58,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:42:58,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:42:58,166 INFO L87 Difference]: Start difference. First operand 5771 states and 8817 transitions. Second operand 6 states. [2020-10-28 18:42:58,537 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:42:59,355 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 18:42:59,735 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:43:01,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:43:01,207 INFO L93 Difference]: Finished difference Result 14038 states and 21403 transitions. [2020-10-28 18:43:01,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:43:01,208 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-28 18:43:01,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:43:01,228 INFO L225 Difference]: With dead ends: 14038 [2020-10-28 18:43:01,228 INFO L226 Difference]: Without dead ends: 8739 [2020-10-28 18:43:01,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:43:01,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8739 states. [2020-10-28 18:43:02,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8739 to 6877. [2020-10-28 18:43:02,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6877 states. [2020-10-28 18:43:02,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6877 states to 6877 states and 10517 transitions. [2020-10-28 18:43:02,256 INFO L78 Accepts]: Start accepts. Automaton has 6877 states and 10517 transitions. Word has length 104 [2020-10-28 18:43:02,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:43:02,256 INFO L481 AbstractCegarLoop]: Abstraction has 6877 states and 10517 transitions. [2020-10-28 18:43:02,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:43:02,257 INFO L276 IsEmpty]: Start isEmpty. Operand 6877 states and 10517 transitions. [2020-10-28 18:43:02,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 18:43:02,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:43:02,260 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 18:43:02,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 18:43:02,260 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:43:02,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:43:02,260 INFO L82 PathProgramCache]: Analyzing trace with hash 611892742, now seen corresponding path program 1 times [2020-10-28 18:43:02,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:43:02,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230376772] [2020-10-28 18:43:02,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:43:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:02,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:02,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:02,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:02,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:02,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:02,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:04,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:04,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:04,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:04,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:05,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:06,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:06,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:07,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:07,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 18:43:07,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:43:07,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 18:43:07,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:07,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:07,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:43:07,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 18:43:07,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 18:43:07,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:07,644 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:43:07,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:43:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:07,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:07,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:07,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:43:07,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:43:07,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:43:07,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:07,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:07,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:43:07,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:43:07,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:43:07,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:07,676 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 18:43:07,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230376772] [2020-10-28 18:43:07,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:43:07,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:43:07,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553346869] [2020-10-28 18:43:07,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:43:07,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:43:07,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:43:07,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:43:07,678 INFO L87 Difference]: Start difference. First operand 6877 states and 10517 transitions. Second operand 6 states. [2020-10-28 18:43:08,045 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:43:08,882 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 18:43:09,246 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:43:10,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:43:10,519 INFO L93 Difference]: Finished difference Result 16414 states and 25023 transitions. [2020-10-28 18:43:10,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:43:10,520 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-28 18:43:10,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:43:10,539 INFO L225 Difference]: With dead ends: 16414 [2020-10-28 18:43:10,540 INFO L226 Difference]: Without dead ends: 10043 [2020-10-28 18:43:10,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:43:10,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10043 states. [2020-10-28 18:43:11,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10043 to 7973. [2020-10-28 18:43:11,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7973 states. [2020-10-28 18:43:11,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7973 states to 7973 states and 12201 transitions. [2020-10-28 18:43:11,740 INFO L78 Accepts]: Start accepts. Automaton has 7973 states and 12201 transitions. Word has length 104 [2020-10-28 18:43:11,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:43:11,740 INFO L481 AbstractCegarLoop]: Abstraction has 7973 states and 12201 transitions. [2020-10-28 18:43:11,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:43:11,740 INFO L276 IsEmpty]: Start isEmpty. Operand 7973 states and 12201 transitions. [2020-10-28 18:43:11,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 18:43:11,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:43:11,743 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 18:43:11,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 18:43:11,743 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:43:11,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:43:11,744 INFO L82 PathProgramCache]: Analyzing trace with hash -755727280, now seen corresponding path program 1 times [2020-10-28 18:43:11,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:43:11,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606118387] [2020-10-28 18:43:11,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:43:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:11,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:11,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:11,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:11,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:12,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:12,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:14,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:15,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:15,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:15,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:16,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:16,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:16,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:16,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:16,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 18:43:16,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:43:16,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 18:43:16,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:16,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:16,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:43:16,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-28 18:43:16,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 18:43:16,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:17,106 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:43:17,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:43:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:17,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:17,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:17,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:43:17,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:43:17,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:43:17,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:17,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:17,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:43:17,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:43:17,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:43:17,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:17,139 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 18:43:17,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606118387] [2020-10-28 18:43:17,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:43:17,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:43:17,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671370841] [2020-10-28 18:43:17,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:43:17,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:43:17,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:43:17,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:43:17,142 INFO L87 Difference]: Start difference. First operand 7973 states and 12201 transitions. Second operand 4 states. [2020-10-28 18:43:17,431 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:43:19,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:43:19,099 INFO L93 Difference]: Finished difference Result 16491 states and 25277 transitions. [2020-10-28 18:43:19,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:43:19,100 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-10-28 18:43:19,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:43:19,123 INFO L225 Difference]: With dead ends: 16491 [2020-10-28 18:43:19,123 INFO L226 Difference]: Without dead ends: 9048 [2020-10-28 18:43:19,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:43:19,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9048 states. [2020-10-28 18:43:20,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9048 to 9045. [2020-10-28 18:43:20,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9045 states. [2020-10-28 18:43:20,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9045 states to 9045 states and 13817 transitions. [2020-10-28 18:43:20,384 INFO L78 Accepts]: Start accepts. Automaton has 9045 states and 13817 transitions. Word has length 104 [2020-10-28 18:43:20,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:43:20,384 INFO L481 AbstractCegarLoop]: Abstraction has 9045 states and 13817 transitions. [2020-10-28 18:43:20,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:43:20,384 INFO L276 IsEmpty]: Start isEmpty. Operand 9045 states and 13817 transitions. [2020-10-28 18:43:20,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 18:43:20,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:43:20,387 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 18:43:20,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 18:43:20,388 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:43:20,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:43:20,388 INFO L82 PathProgramCache]: Analyzing trace with hash 297352431, now seen corresponding path program 1 times [2020-10-28 18:43:20,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:43:20,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194356597] [2020-10-28 18:43:20,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:43:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:20,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:20,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:20,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:20,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:20,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:21,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:21,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:21,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:21,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:21,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:22,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:22,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:22,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:22,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:23,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:24,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:25,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:25,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:25,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 18:43:25,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 18:43:25,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 18:43:25,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:25,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:25,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:43:25,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 18:43:25,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 18:43:25,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:25,778 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:43:25,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:43:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:25,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:25,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:25,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:43:25,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:43:25,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:43:25,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:25,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:25,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:43:25,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:43:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:43:25,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:25,817 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 18:43:25,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194356597] [2020-10-28 18:43:25,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:43:25,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:43:25,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668922896] [2020-10-28 18:43:25,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:43:25,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:43:25,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:43:25,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:43:25,819 INFO L87 Difference]: Start difference. First operand 9045 states and 13817 transitions. Second operand 5 states. [2020-10-28 18:43:26,179 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:43:27,000 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:43:28,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:43:28,896 INFO L93 Difference]: Finished difference Result 23895 states and 36401 transitions. [2020-10-28 18:43:28,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:43:28,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-28 18:43:28,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:43:28,928 INFO L225 Difference]: With dead ends: 23895 [2020-10-28 18:43:28,928 INFO L226 Difference]: Without dead ends: 15380 [2020-10-28 18:43:28,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:43:28,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15380 states. [2020-10-28 18:43:30,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15380 to 15273. [2020-10-28 18:43:30,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15273 states. [2020-10-28 18:43:30,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15273 states to 15273 states and 23045 transitions. [2020-10-28 18:43:30,844 INFO L78 Accepts]: Start accepts. Automaton has 15273 states and 23045 transitions. Word has length 104 [2020-10-28 18:43:30,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:43:30,845 INFO L481 AbstractCegarLoop]: Abstraction has 15273 states and 23045 transitions. [2020-10-28 18:43:30,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:43:30,845 INFO L276 IsEmpty]: Start isEmpty. Operand 15273 states and 23045 transitions. [2020-10-28 18:43:30,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 18:43:30,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:43:30,848 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 18:43:30,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 18:43:30,848 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:43:30,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:43:30,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1536032109, now seen corresponding path program 1 times [2020-10-28 18:43:30,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:43:30,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919414316] [2020-10-28 18:43:30,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:43:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:30,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:30,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:30,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:31,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:31,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:31,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:32,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:32,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:33,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:33,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:33,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:33,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:34,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:34,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:35,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:35,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:35,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 18:43:35,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 18:43:35,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 18:43:35,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:35,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:35,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:43:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 18:43:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 18:43:35,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:36,234 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:43:36,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:43:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:36,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:36,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:36,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:43:36,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:43:36,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:43:36,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:36,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:36,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:43:36,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:43:36,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:43:36,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:36,268 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 18:43:36,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919414316] [2020-10-28 18:43:36,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:43:36,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:43:36,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394331375] [2020-10-28 18:43:36,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:43:36,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:43:36,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:43:36,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:43:36,270 INFO L87 Difference]: Start difference. First operand 15273 states and 23045 transitions. Second operand 6 states. [2020-10-28 18:43:36,643 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:43:37,467 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 18:43:37,846 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:43:40,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:43:40,845 INFO L93 Difference]: Finished difference Result 34994 states and 52651 transitions. [2020-10-28 18:43:40,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:43:40,845 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-28 18:43:40,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:43:40,870 INFO L225 Difference]: With dead ends: 34994 [2020-10-28 18:43:40,871 INFO L226 Difference]: Without dead ends: 20735 [2020-10-28 18:43:40,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:43:40,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20735 states. [2020-10-28 18:43:43,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20735 to 17313. [2020-10-28 18:43:43,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17313 states. [2020-10-28 18:43:43,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17313 states to 17313 states and 26125 transitions. [2020-10-28 18:43:43,253 INFO L78 Accepts]: Start accepts. Automaton has 17313 states and 26125 transitions. Word has length 104 [2020-10-28 18:43:43,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:43:43,253 INFO L481 AbstractCegarLoop]: Abstraction has 17313 states and 26125 transitions. [2020-10-28 18:43:43,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:43:43,254 INFO L276 IsEmpty]: Start isEmpty. Operand 17313 states and 26125 transitions. [2020-10-28 18:43:43,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 18:43:43,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:43:43,256 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 18:43:43,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 18:43:43,256 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:43:43,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:43:43,257 INFO L82 PathProgramCache]: Analyzing trace with hash 298925788, now seen corresponding path program 1 times [2020-10-28 18:43:43,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:43:43,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744773198] [2020-10-28 18:43:43,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:43:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:43,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:43,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:43,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:43,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:43,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:44,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:45,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:45,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:46,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:46,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:46,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:46,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:47,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:48,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:48,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 18:43:48,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:43:48,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 18:43:48,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:48,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:48,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:43:48,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 18:43:48,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 18:43:48,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:48,644 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:43:48,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:43:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:48,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:48,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:48,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:43:48,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:43:48,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:43:48,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:48,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:48,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:43:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:43:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:43:48,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:48,687 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 18:43:48,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744773198] [2020-10-28 18:43:48,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:43:48,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:43:48,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795484844] [2020-10-28 18:43:48,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:43:48,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:43:48,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:43:48,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:43:48,689 INFO L87 Difference]: Start difference. First operand 17313 states and 26125 transitions. Second operand 6 states. [2020-10-28 18:43:49,062 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:43:49,898 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 18:43:50,229 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:43:53,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:43:53,084 INFO L93 Difference]: Finished difference Result 40145 states and 60395 transitions. [2020-10-28 18:43:53,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:43:53,085 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-28 18:43:53,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:43:53,113 INFO L225 Difference]: With dead ends: 40145 [2020-10-28 18:43:53,113 INFO L226 Difference]: Without dead ends: 23854 [2020-10-28 18:43:53,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:43:53,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23854 states. [2020-10-28 18:43:55,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23854 to 19408. [2020-10-28 18:43:55,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19408 states. [2020-10-28 18:43:55,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19408 states to 19408 states and 29293 transitions. [2020-10-28 18:43:55,601 INFO L78 Accepts]: Start accepts. Automaton has 19408 states and 29293 transitions. Word has length 104 [2020-10-28 18:43:55,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:43:55,602 INFO L481 AbstractCegarLoop]: Abstraction has 19408 states and 29293 transitions. [2020-10-28 18:43:55,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:43:55,602 INFO L276 IsEmpty]: Start isEmpty. Operand 19408 states and 29293 transitions. [2020-10-28 18:43:55,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 18:43:55,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:43:55,604 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 18:43:55,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 18:43:55,604 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:43:55,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:43:55,605 INFO L82 PathProgramCache]: Analyzing trace with hash -2012258185, now seen corresponding path program 1 times [2020-10-28 18:43:55,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:43:55,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137042737] [2020-10-28 18:43:55,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:43:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:55,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:55,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:55,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:55,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:56,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:56,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:56,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:56,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:56,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:57,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:57,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:57,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:58,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:58,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:59,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:00,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:00,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:00,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 18:44:00,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 18:44:00,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 18:44:00,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:00,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:00,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:44:00,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-28 18:44:00,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 18:44:00,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:44:00,986 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:44:00,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:44:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:44:00,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:01,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:01,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:44:01,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:44:01,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:44:01,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:01,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:01,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:44:01,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:44:01,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:44:01,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:44:01,024 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 18:44:01,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137042737] [2020-10-28 18:44:01,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:44:01,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:44:01,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692376437] [2020-10-28 18:44:01,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:44:01,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:44:01,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:44:01,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:44:01,026 INFO L87 Difference]: Start difference. First operand 19408 states and 29293 transitions. Second operand 5 states. [2020-10-28 18:44:05,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:44:05,524 INFO L93 Difference]: Finished difference Result 32867 states and 49471 transitions. [2020-10-28 18:44:05,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:44:05,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-28 18:44:05,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:44:05,559 INFO L225 Difference]: With dead ends: 32867 [2020-10-28 18:44:05,559 INFO L226 Difference]: Without dead ends: 32864 [2020-10-28 18:44:05,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:44:05,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32864 states. [2020-10-28 18:44:08,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32864 to 19696. [2020-10-28 18:44:08,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19696 states. [2020-10-28 18:44:08,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19696 states to 19696 states and 29565 transitions. [2020-10-28 18:44:08,091 INFO L78 Accepts]: Start accepts. Automaton has 19696 states and 29565 transitions. Word has length 105 [2020-10-28 18:44:08,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:44:08,091 INFO L481 AbstractCegarLoop]: Abstraction has 19696 states and 29565 transitions. [2020-10-28 18:44:08,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:44:08,091 INFO L276 IsEmpty]: Start isEmpty. Operand 19696 states and 29565 transitions. [2020-10-28 18:44:08,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 18:44:08,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:44:08,093 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 18:44:08,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 18:44:08,093 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:44:08,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:44:08,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1723678916, now seen corresponding path program 1 times [2020-10-28 18:44:08,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:44:08,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550216286] [2020-10-28 18:44:08,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:44:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:44:08,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:08,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:08,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:08,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:09,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:09,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:10,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:10,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:10,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:11,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:11,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:12,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:12,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:12,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:13,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:13,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:13,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 18:44:13,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 18:44:13,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:44:13,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:13,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:13,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 18:44:13,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:44:13,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 18:44:13,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:44:13,628 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:44:13,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:44:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:44:13,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:13,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:13,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:44:13,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:44:13,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 18:44:13,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:13,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:13,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:44:13,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:44:13,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:44:13,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:44:13,704 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 18:44:13,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550216286] [2020-10-28 18:44:13,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:44:13,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 18:44:13,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119449584] [2020-10-28 18:44:13,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:44:13,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:44:13,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:44:13,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:44:13,706 INFO L87 Difference]: Start difference. First operand 19696 states and 29565 transitions. Second operand 11 states. [2020-10-28 18:44:14,143 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 18:44:15,600 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:44:15,951 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:44:20,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:44:20,729 INFO L93 Difference]: Finished difference Result 48853 states and 73177 transitions. [2020-10-28 18:44:20,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 18:44:20,730 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2020-10-28 18:44:20,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:44:20,769 INFO L225 Difference]: With dead ends: 48853 [2020-10-28 18:44:20,769 INFO L226 Difference]: Without dead ends: 29615 [2020-10-28 18:44:20,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2020-10-28 18:44:20,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29615 states. [2020-10-28 18:44:23,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29615 to 19696. [2020-10-28 18:44:23,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19696 states. [2020-10-28 18:44:23,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19696 states to 19696 states and 29542 transitions. [2020-10-28 18:44:23,799 INFO L78 Accepts]: Start accepts. Automaton has 19696 states and 29542 transitions. Word has length 105 [2020-10-28 18:44:23,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:44:23,799 INFO L481 AbstractCegarLoop]: Abstraction has 19696 states and 29542 transitions. [2020-10-28 18:44:23,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 18:44:23,800 INFO L276 IsEmpty]: Start isEmpty. Operand 19696 states and 29542 transitions. [2020-10-28 18:44:23,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 18:44:23,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:44:23,801 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 18:44:23,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 18:44:23,802 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:44:23,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:44:23,802 INFO L82 PathProgramCache]: Analyzing trace with hash 648694537, now seen corresponding path program 1 times [2020-10-28 18:44:23,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:44:23,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962386993] [2020-10-28 18:44:23,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:44:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:44:23,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:23,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:24,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:24,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:24,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:24,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:24,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:25,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:25,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:28,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:28,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 18:44:28,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:44:28,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 18:44:28,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:28,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:28,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 18:44:28,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:44:28,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 18:44:28,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:44:29,330 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:44:29,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:44:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:44:29,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:29,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:29,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:44:29,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:44:29,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 18:44:29,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:29,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:29,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:44:29,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:44:29,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:44:29,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:44:29,389 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 18:44:29,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962386993] [2020-10-28 18:44:29,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:44:29,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 18:44:29,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662812171] [2020-10-28 18:44:29,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:44:29,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:44:29,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:44:29,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:44:29,391 INFO L87 Difference]: Start difference. First operand 19696 states and 29542 transitions. Second operand 11 states. [2020-10-28 18:44:29,813 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 18:44:31,399 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-28 18:44:31,784 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 18:44:36,065 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:44:40,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:44:40,659 INFO L93 Difference]: Finished difference Result 63928 states and 95862 transitions. [2020-10-28 18:44:40,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 18:44:40,659 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2020-10-28 18:44:40,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:44:40,714 INFO L225 Difference]: With dead ends: 63928 [2020-10-28 18:44:40,715 INFO L226 Difference]: Without dead ends: 44610 [2020-10-28 18:44:40,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=184, Invalid=628, Unknown=0, NotChecked=0, Total=812 [2020-10-28 18:44:40,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44610 states. [2020-10-28 18:44:43,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44610 to 19696. [2020-10-28 18:44:43,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19696 states. [2020-10-28 18:44:43,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19696 states to 19696 states and 29540 transitions. [2020-10-28 18:44:43,974 INFO L78 Accepts]: Start accepts. Automaton has 19696 states and 29540 transitions. Word has length 105 [2020-10-28 18:44:43,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:44:43,974 INFO L481 AbstractCegarLoop]: Abstraction has 19696 states and 29540 transitions. [2020-10-28 18:44:43,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 18:44:43,974 INFO L276 IsEmpty]: Start isEmpty. Operand 19696 states and 29540 transitions. [2020-10-28 18:44:43,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 18:44:43,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:44:43,976 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 18:44:43,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 18:44:43,976 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:44:43,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:44:43,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1247276941, now seen corresponding path program 1 times [2020-10-28 18:44:43,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:44:43,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047817087] [2020-10-28 18:44:43,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:44:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:44:44,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:44,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:44,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:44,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:44,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:45,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:45,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:45,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:46,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:46,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:46,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:46,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:46,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:48,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:48,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:49,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:49,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 18:44:49,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 18:44:49,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 18:44:49,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:49,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:49,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 18:44:49,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:44:49,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 18:44:49,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:44:49,530 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:44:49,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:44:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:44:49,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:44:49,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:44:49,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:44:49,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:44:49,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:44:49,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:44:49,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:44:49,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:44:49,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:44:49,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:44:49,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:44:49,593 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 18:44:49,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047817087] [2020-10-28 18:44:49,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:44:49,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 18:44:49,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948814365] [2020-10-28 18:44:49,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:44:49,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:44:49,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:44:49,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:44:49,595 INFO L87 Difference]: Start difference. First operand 19696 states and 29540 transitions. Second operand 11 states. [2020-10-28 18:44:50,056 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-28 18:44:51,792 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:44:52,240 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 194