/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.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:49:25,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:49:25,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:49:25,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:49:25,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:49:25,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:49:25,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:49:25,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:49:25,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:49:25,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:49:25,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:49:25,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:49:25,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:49:25,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:49:25,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:49:25,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:49:25,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:49:25,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:49:25,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:49:25,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:49:25,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:49:25,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:49:25,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:49:25,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:49:25,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:49:25,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:49:25,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:49:25,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:49:25,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:49:25,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:49:25,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:49:25,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:49:25,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:49:25,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:49:25,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:49:25,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:49:25,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:49:25,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:49:25,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:49:25,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:49:25,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:49:25,262 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 18:49:25,291 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:49:25,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:49:25,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:49:25,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:49:25,294 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:49:25,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:49:25,295 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:49:25,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:49:25,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:49:25,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:49:25,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:49:25,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:49:25,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:49:25,296 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:49:25,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:49:25,296 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:49:25,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:49:25,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:49:25,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:49:25,297 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:49:25,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:49:25,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:49:25,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:49:25,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:49:25,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:49:25,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:49:25,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:49:25,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:49:25,299 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:49:25,300 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:49:25,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:49:25,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:49:25,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:49:25,766 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:49:25,767 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:49:25,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 18:49:25,859 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36ef8c657/ef2783f6b73544b8945aa07f38ce4eba/FLAGd3dd357db [2020-10-28 18:49:26,541 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:49:26,542 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 18:49:26,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36ef8c657/ef2783f6b73544b8945aa07f38ce4eba/FLAGd3dd357db [2020-10-28 18:49:26,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36ef8c657/ef2783f6b73544b8945aa07f38ce4eba [2020-10-28 18:49:26,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:49:26,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:49:26,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:49:26,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:49:26,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:49:26,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:49:26" (1/1) ... [2020-10-28 18:49:26,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191418ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:49:26, skipping insertion in model container [2020-10-28 18:49:26,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:49:26" (1/1) ... [2020-10-28 18:49:26,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:49:26,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:49:27,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:49:27,488 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:49:27,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:49:27,677 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:49:27,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:49:27 WrapperNode [2020-10-28 18:49:27,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:49:27,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:49:27,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:49:27,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:49:27,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:49:27" (1/1) ... [2020-10-28 18:49:27,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:49:27" (1/1) ... [2020-10-28 18:49:27,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:49:27" (1/1) ... [2020-10-28 18:49:27,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:49:27" (1/1) ... [2020-10-28 18:49:27,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:49:27" (1/1) ... [2020-10-28 18:49:27,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:49:27" (1/1) ... [2020-10-28 18:49:27,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:49:27" (1/1) ... [2020-10-28 18:49:27,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:49:27,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:49:27,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:49:27,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:49:27,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:49:27" (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 18:49:27,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:49:27,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:49:27,933 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:49:27,934 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:49:27,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:49:27,935 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:49:27,935 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:49:27,935 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:49:27,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:49:27,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:49:27,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:49:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 18:49:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:49:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:49:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:49:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:49:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:49:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:49:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:49:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:49:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 18:49:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-28 18:49:27,940 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-28 18:49:27,940 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2020-10-28 18:49:27,940 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:49:27,940 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:49:27,940 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:49:27,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:49:27,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:49:27,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:49:27,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:49:27,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:49:27,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:49:29,396 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:49:29,397 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:49:29,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:49:29 BoogieIcfgContainer [2020-10-28 18:49:29,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:49:29,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:49:29,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:49:29,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:49:29,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:49:26" (1/3) ... [2020-10-28 18:49:29,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f477a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:49:29, skipping insertion in model container [2020-10-28 18:49:29,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:49:27" (2/3) ... [2020-10-28 18:49:29,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f477a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:49:29, skipping insertion in model container [2020-10-28 18:49:29,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:49:29" (3/3) ... [2020-10-28 18:49:29,410 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 18:49:29,420 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:49:29,425 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:49:29,440 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:49:29,471 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:49:29,472 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:49:29,472 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:49:29,472 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:49:29,472 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:49:29,472 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:49:29,472 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:49:29,473 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:49:29,497 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states. [2020-10-28 18:49:29,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-28 18:49:29,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:49:29,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:49:29,513 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:49:29,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:49:29,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1281272988, now seen corresponding path program 1 times [2020-10-28 18:49:29,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:49:29,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945575749] [2020-10-28 18:49:29,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:49:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:30,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:30,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:30,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:30,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:30,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:31,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:31,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:31,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:32,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:33,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:33,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:34,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:34,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:34,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:35,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:35,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 18:49:35,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:49:35,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-28 18:49:35,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:35,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:35,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:49:35,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-28 18:49:35,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 18:49:35,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-28 18:49:35,564 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:49:35,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:49:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:35,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:35,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:35,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:49:35,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:49:35,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 18:49:35,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:35,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:35,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:49:35,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:49:35,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:49:35,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:49:35,667 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 18:49:35,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945575749] [2020-10-28 18:49:35,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:49:35,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:49:35,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118483158] [2020-10-28 18:49:35,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:49:35,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:49:35,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:49:35,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:49:35,695 INFO L87 Difference]: Start difference. First operand 240 states. Second operand 4 states. [2020-10-28 18:49:36,073 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 18:49:37,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:49:37,760 INFO L93 Difference]: Finished difference Result 459 states and 763 transitions. [2020-10-28 18:49:37,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:49:37,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-28 18:49:37,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:49:37,800 INFO L225 Difference]: With dead ends: 459 [2020-10-28 18:49:37,801 INFO L226 Difference]: Without dead ends: 352 [2020-10-28 18:49:37,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:49:37,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-28 18:49:37,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 349. [2020-10-28 18:49:37,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-10-28 18:49:37,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 500 transitions. [2020-10-28 18:49:37,915 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 500 transitions. Word has length 129 [2020-10-28 18:49:37,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:49:37,916 INFO L481 AbstractCegarLoop]: Abstraction has 349 states and 500 transitions. [2020-10-28 18:49:37,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:49:37,916 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 500 transitions. [2020-10-28 18:49:37,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-28 18:49:37,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:49:37,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:49:37,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:49:37,921 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:49:37,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:49:37,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1408586815, now seen corresponding path program 1 times [2020-10-28 18:49:37,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:49:37,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535922718] [2020-10-28 18:49:37,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:49:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:38,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:38,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:38,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:38,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:38,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:38,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:38,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:39,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:39,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:39,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:39,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:40,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:40,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:43,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:43,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 18:49:43,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:49:43,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 18:49:43,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:43,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:49:43,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:49:43,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 18:49:43,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 18:49:43,504 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:49:43,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:49:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:43,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:43,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:43,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:49:43,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:49:43,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 18:49:43,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:43,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:43,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:49:43,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:49:43,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:49:43,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:49:43,624 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 18:49:43,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535922718] [2020-10-28 18:49:43,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:49:43,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:49:43,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610573771] [2020-10-28 18:49:43,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:49:43,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:49:43,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:49:43,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:49:43,629 INFO L87 Difference]: Start difference. First operand 349 states and 500 transitions. Second operand 6 states. [2020-10-28 18:49:43,975 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 18:49:45,048 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-28 18:49:45,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:49:45,541 INFO L93 Difference]: Finished difference Result 836 states and 1261 transitions. [2020-10-28 18:49:45,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:49:45,542 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2020-10-28 18:49:45,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:49:45,555 INFO L225 Difference]: With dead ends: 836 [2020-10-28 18:49:45,555 INFO L226 Difference]: Without dead ends: 566 [2020-10-28 18:49:45,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:49:45,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2020-10-28 18:49:45,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 563. [2020-10-28 18:49:45,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-10-28 18:49:45,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 838 transitions. [2020-10-28 18:49:45,639 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 838 transitions. Word has length 131 [2020-10-28 18:49:45,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:49:45,640 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 838 transitions. [2020-10-28 18:49:45,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:49:45,640 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 838 transitions. [2020-10-28 18:49:45,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 18:49:45,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:49:45,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:49:45,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:49:45,645 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:49:45,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:49:45,646 INFO L82 PathProgramCache]: Analyzing trace with hash 2138856222, now seen corresponding path program 1 times [2020-10-28 18:49:45,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:49:45,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138608194] [2020-10-28 18:49:45,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:49:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:45,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:45,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:45,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:45,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:46,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:46,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:46,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:47,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:47,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:47,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:47,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:48,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:48,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:50,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:50,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 18:49:50,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:49:50,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 18:49:50,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:50,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:50,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 18:49:50,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:49:50,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 18:49:50,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:49:51,128 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:49:51,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:49:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:51,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:51,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:51,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:49:51,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:49:51,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 18:49:51,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:51,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:51,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:49:51,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:49:51,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:49:51,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:49:51,212 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 18:49:51,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138608194] [2020-10-28 18:49:51,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:49:51,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 18:49:51,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679191014] [2020-10-28 18:49:51,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 18:49:51,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:49:51,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 18:49:51,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:49:51,215 INFO L87 Difference]: Start difference. First operand 563 states and 838 transitions. Second operand 7 states. [2020-10-28 18:49:51,582 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 18:49:53,082 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 18:49:53,463 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:49:53,803 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 18:49:54,208 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 18:49:55,405 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-28 18:49:55,735 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 18:49:56,310 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-28 18:49:56,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:49:56,332 INFO L93 Difference]: Finished difference Result 3830 states and 5993 transitions. [2020-10-28 18:49:56,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 18:49:56,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-10-28 18:49:56,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:49:56,355 INFO L225 Difference]: With dead ends: 3830 [2020-10-28 18:49:56,355 INFO L226 Difference]: Without dead ends: 3358 [2020-10-28 18:49:56,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-28 18:49:56,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2020-10-28 18:49:56,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 1488. [2020-10-28 18:49:56,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2020-10-28 18:49:56,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2288 transitions. [2020-10-28 18:49:56,481 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2288 transitions. Word has length 132 [2020-10-28 18:49:56,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:49:56,482 INFO L481 AbstractCegarLoop]: Abstraction has 1488 states and 2288 transitions. [2020-10-28 18:49:56,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 18:49:56,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2288 transitions. [2020-10-28 18:49:56,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-28 18:49:56,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:49:56,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:49:56,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:49:56,489 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:49:56,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:49:56,490 INFO L82 PathProgramCache]: Analyzing trace with hash 2007861823, now seen corresponding path program 1 times [2020-10-28 18:49:56,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:49:56,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408960876] [2020-10-28 18:49:56,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:49:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:56,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:56,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:56,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:56,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:56,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:57,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:57,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:57,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:58,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:00,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:00,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:01,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:01,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:01,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 18:50:01,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:50:01,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 18:50:01,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:01,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:01,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:50:01,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:50:01,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 18:50:01,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:50:02,094 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:50:02,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:50:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:02,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:02,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:02,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:50:02,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:50:02,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 18:50:02,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:02,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:02,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:50:02,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:50:02,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:50:02,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:50:02,239 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 18:50:02,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408960876] [2020-10-28 18:50:02,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:50:02,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:50:02,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599671802] [2020-10-28 18:50:02,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:50:02,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:50:02,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:50:02,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:50:02,244 INFO L87 Difference]: Start difference. First operand 1488 states and 2288 transitions. Second operand 6 states. [2020-10-28 18:50:02,600 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 18:50:03,598 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-28 18:50:04,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:50:04,135 INFO L93 Difference]: Finished difference Result 3871 states and 6052 transitions. [2020-10-28 18:50:04,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:50:04,135 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2020-10-28 18:50:04,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:50:04,149 INFO L225 Difference]: With dead ends: 3871 [2020-10-28 18:50:04,150 INFO L226 Difference]: Without dead ends: 2509 [2020-10-28 18:50:04,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:50:04,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2020-10-28 18:50:04,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 2506. [2020-10-28 18:50:04,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2506 states. [2020-10-28 18:50:04,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 3886 transitions. [2020-10-28 18:50:04,346 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 3886 transitions. Word has length 133 [2020-10-28 18:50:04,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:50:04,347 INFO L481 AbstractCegarLoop]: Abstraction has 2506 states and 3886 transitions. [2020-10-28 18:50:04,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:50:04,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 3886 transitions. [2020-10-28 18:50:04,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 18:50:04,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:50:04,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:50:04,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:50:04,351 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:50:04,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:50:04,351 INFO L82 PathProgramCache]: Analyzing trace with hash 416304783, now seen corresponding path program 1 times [2020-10-28 18:50:04,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:50:04,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499065893] [2020-10-28 18:50:04,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:50:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:04,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:04,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:04,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:04,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:04,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:04,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:05,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:05,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:06,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:08,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:08,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:08,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:09,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:09,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 18:50:09,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:50:09,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 18:50:09,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:09,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:50:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:50:09,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 18:50:09,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:50:09,810 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:50:09,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:50:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:09,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:09,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:09,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:50:09,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:50:09,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 18:50:09,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:09,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:09,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:50:09,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:50:09,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:50:09,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:50:09,912 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 18:50:09,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499065893] [2020-10-28 18:50:09,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:50:09,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:50:09,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142429290] [2020-10-28 18:50:09,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:50:09,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:50:09,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:50:09,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:50:09,915 INFO L87 Difference]: Start difference. First operand 2506 states and 3886 transitions. Second operand 6 states. [2020-10-28 18:50:10,309 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:50:11,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:50:11,452 INFO L93 Difference]: Finished difference Result 4894 states and 7644 transitions. [2020-10-28 18:50:11,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:50:11,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-10-28 18:50:11,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:50:11,469 INFO L225 Difference]: With dead ends: 4894 [2020-10-28 18:50:11,469 INFO L226 Difference]: Without dead ends: 2506 [2020-10-28 18:50:11,475 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 18:50:11,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2020-10-28 18:50:11,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2506. [2020-10-28 18:50:11,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2506 states. [2020-10-28 18:50:11,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 3860 transitions. [2020-10-28 18:50:11,642 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 3860 transitions. Word has length 134 [2020-10-28 18:50:11,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:50:11,643 INFO L481 AbstractCegarLoop]: Abstraction has 2506 states and 3860 transitions. [2020-10-28 18:50:11,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:50:11,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 3860 transitions. [2020-10-28 18:50:11,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-28 18:50:11,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:50:11,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:50:11,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:50:11,647 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:50:11,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:50:11,648 INFO L82 PathProgramCache]: Analyzing trace with hash -2021772464, now seen corresponding path program 1 times [2020-10-28 18:50:11,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:50:11,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120015432] [2020-10-28 18:50:11,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:50:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:11,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:11,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:11,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:11,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:11,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:12,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:13,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:13,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:16,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:16,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 18:50:16,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:50:16,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 18:50:16,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:16,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:50:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:50:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 18:50:16,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:50:17,097 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:50:17,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:50:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:17,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:17,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:17,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:50:17,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:50:17,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 18:50:17,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:17,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:17,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:50:17,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:50:17,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:50:17,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:50:17,193 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 18:50:17,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120015432] [2020-10-28 18:50:17,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:50:17,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:50:17,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553601973] [2020-10-28 18:50:17,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:50:17,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:50:17,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:50:17,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:50:17,196 INFO L87 Difference]: Start difference. First operand 2506 states and 3860 transitions. Second operand 6 states. [2020-10-28 18:50:17,531 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:50:18,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:50:18,737 INFO L93 Difference]: Finished difference Result 4933 states and 7638 transitions. [2020-10-28 18:50:18,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:50:18,738 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2020-10-28 18:50:18,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:50:18,752 INFO L225 Difference]: With dead ends: 4933 [2020-10-28 18:50:18,752 INFO L226 Difference]: Without dead ends: 2506 [2020-10-28 18:50:18,759 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 18:50:18,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2020-10-28 18:50:18,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2506. [2020-10-28 18:50:18,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2506 states. [2020-10-28 18:50:18,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 3834 transitions. [2020-10-28 18:50:18,936 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 3834 transitions. Word has length 135 [2020-10-28 18:50:18,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:50:18,936 INFO L481 AbstractCegarLoop]: Abstraction has 2506 states and 3834 transitions. [2020-10-28 18:50:18,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:50:18,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 3834 transitions. [2020-10-28 18:50:18,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 18:50:18,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:50:18,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:50:18,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:50:18,940 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:50:18,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:50:18,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1182881022, now seen corresponding path program 1 times [2020-10-28 18:50:18,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:50:18,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996733591] [2020-10-28 18:50:18,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:50:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:19,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:19,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:19,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:19,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:19,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:19,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:19,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:20,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:20,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:21,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:23,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:23,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:24,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:24,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 18:50:24,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:50:24,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 18:50:24,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:24,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:24,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:50:24,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:50:24,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 18:50:24,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:50:24,399 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:50:24,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:50:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:24,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:24,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:24,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:50:24,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:50:24,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 18:50:24,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:24,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:50:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:50:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:50:24,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:50:24,499 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 18:50:24,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996733591] [2020-10-28 18:50:24,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:50:24,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:50:24,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281610398] [2020-10-28 18:50:24,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:50:24,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:50:24,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:50:24,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:50:24,501 INFO L87 Difference]: Start difference. First operand 2506 states and 3834 transitions. Second operand 6 states. [2020-10-28 18:50:24,877 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 18:50:25,859 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-28 18:50:26,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:50:26,380 INFO L93 Difference]: Finished difference Result 3904 states and 6002 transitions. [2020-10-28 18:50:26,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:50:26,380 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-10-28 18:50:26,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:50:26,388 INFO L225 Difference]: With dead ends: 3904 [2020-10-28 18:50:26,389 INFO L226 Difference]: Without dead ends: 1631 [2020-10-28 18:50:26,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:50:26,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2020-10-28 18:50:26,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1609. [2020-10-28 18:50:26,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1609 states. [2020-10-28 18:50:26,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2446 transitions. [2020-10-28 18:50:26,534 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2446 transitions. Word has length 136 [2020-10-28 18:50:26,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:50:26,534 INFO L481 AbstractCegarLoop]: Abstraction has 1609 states and 2446 transitions. [2020-10-28 18:50:26,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:50:26,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2446 transitions. [2020-10-28 18:50:26,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 18:50:26,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:50:26,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:50:26,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:50:26,537 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:50:26,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:50:26,538 INFO L82 PathProgramCache]: Analyzing trace with hash -630455503, now seen corresponding path program 1 times [2020-10-28 18:50:26,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:50:26,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865400213] [2020-10-28 18:50:26,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:50:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:26,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:26,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:26,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:26,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:26,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:28,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:28,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:28,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:31,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:31,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 18:50:31,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:50:31,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 18:50:31,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:31,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:50:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:50:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 18:50:31,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:50:31,994 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:50:31,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:50:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:32,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:32,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:32,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:50:32,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:50:32,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 18:50:32,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:32,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:32,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:50:32,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:50:32,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:50:32,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 18:50:32,091 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 18:50:32,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865400213] [2020-10-28 18:50:32,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:50:32,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:50:32,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164479512] [2020-10-28 18:50:32,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:50:32,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:50:32,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:50:32,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:50:32,095 INFO L87 Difference]: Start difference. First operand 1609 states and 2446 transitions. Second operand 6 states. [2020-10-28 18:50:32,473 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:50:33,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:50:33,532 INFO L93 Difference]: Finished difference Result 3131 states and 4802 transitions. [2020-10-28 18:50:33,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:50:33,533 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-10-28 18:50:33,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:50:33,540 INFO L225 Difference]: With dead ends: 3131 [2020-10-28 18:50:33,540 INFO L226 Difference]: Without dead ends: 1609 [2020-10-28 18:50:33,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:50:33,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2020-10-28 18:50:33,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1609. [2020-10-28 18:50:33,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1609 states. [2020-10-28 18:50:33,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2429 transitions. [2020-10-28 18:50:33,667 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2429 transitions. Word has length 136 [2020-10-28 18:50:33,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:50:33,668 INFO L481 AbstractCegarLoop]: Abstraction has 1609 states and 2429 transitions. [2020-10-28 18:50:33,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:50:33,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2429 transitions. [2020-10-28 18:50:33,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-28 18:50:33,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:50:33,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:50:33,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:50:33,671 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:50:33,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:50:33,671 INFO L82 PathProgramCache]: Analyzing trace with hash 734458128, now seen corresponding path program 1 times [2020-10-28 18:50:33,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:50:33,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500491062] [2020-10-28 18:50:33,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:50:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:33,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:33,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:33,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:33,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:34,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:34,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:34,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:35,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:35,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:36,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:38,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:38,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 18:50:38,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:50:38,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 18:50:38,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:38,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:38,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:50:38,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:50:38,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 18:50:38,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:50:39,102 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:50:39,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:50:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:39,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:39,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:39,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:50:39,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:50:39,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:50:39,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:39,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:39,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:50:39,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:50:39,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:50:39,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:50:39,153 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 18:50:39,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500491062] [2020-10-28 18:50:39,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:50:39,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:50:39,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646364932] [2020-10-28 18:50:39,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:50:39,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:50:39,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:50:39,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:50:39,155 INFO L87 Difference]: Start difference. First operand 1609 states and 2429 transitions. Second operand 6 states. [2020-10-28 18:50:39,506 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 18:50:40,953 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 18:50:41,289 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 18:50:42,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:50:42,807 INFO L93 Difference]: Finished difference Result 11640 states and 17879 transitions. [2020-10-28 18:50:42,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 18:50:42,808 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2020-10-28 18:50:42,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:50:42,859 INFO L225 Difference]: With dead ends: 11640 [2020-10-28 18:50:42,859 INFO L226 Difference]: Without dead ends: 10205 [2020-10-28 18:50:42,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 18:50:42,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10205 states. [2020-10-28 18:50:43,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10205 to 6105. [2020-10-28 18:50:43,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6105 states. [2020-10-28 18:50:43,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6105 states to 6105 states and 9335 transitions. [2020-10-28 18:50:43,355 INFO L78 Accepts]: Start accepts. Automaton has 6105 states and 9335 transitions. Word has length 137 [2020-10-28 18:50:43,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:50:43,355 INFO L481 AbstractCegarLoop]: Abstraction has 6105 states and 9335 transitions. [2020-10-28 18:50:43,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:50:43,356 INFO L276 IsEmpty]: Start isEmpty. Operand 6105 states and 9335 transitions. [2020-10-28 18:50:43,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-28 18:50:43,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:50:43,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:50:43,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:50:43,360 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:50:43,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:50:43,361 INFO L82 PathProgramCache]: Analyzing trace with hash 2074936255, now seen corresponding path program 1 times [2020-10-28 18:50:43,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:50:43,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546292614] [2020-10-28 18:50:43,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:50:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:43,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:43,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:43,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:43,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:43,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:43,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:44,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:44,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:44,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:44,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:44,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:45,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:45,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:45,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:48,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:48,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 18:50:48,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:50:48,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 18:50:48,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:48,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:48,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:50:48,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:50:48,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-28 18:50:48,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:50:49,011 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:50:49,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:50:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:49,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:49,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:49,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:50:49,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:50:49,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 18:50:49,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:49,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:49,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:50:49,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:50:49,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:50:49,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:50:49,106 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 18:50:49,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546292614] [2020-10-28 18:50:49,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:50:49,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:50:49,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336157812] [2020-10-28 18:50:49,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:50:49,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:50:49,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:50:49,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:50:49,108 INFO L87 Difference]: Start difference. First operand 6105 states and 9335 transitions. Second operand 8 states. [2020-10-28 18:50:49,459 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-28 18:50:50,818 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-28 18:50:52,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:50:52,314 INFO L93 Difference]: Finished difference Result 14370 states and 22047 transitions. [2020-10-28 18:50:52,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 18:50:52,314 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2020-10-28 18:50:52,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:50:52,336 INFO L225 Difference]: With dead ends: 14370 [2020-10-28 18:50:52,337 INFO L226 Difference]: Without dead ends: 8665 [2020-10-28 18:50:52,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-28 18:50:52,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8665 states. [2020-10-28 18:50:52,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8665 to 5918. [2020-10-28 18:50:52,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5918 states. [2020-10-28 18:50:52,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5918 states to 5918 states and 9041 transitions. [2020-10-28 18:50:52,987 INFO L78 Accepts]: Start accepts. Automaton has 5918 states and 9041 transitions. Word has length 137 [2020-10-28 18:50:52,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:50:52,987 INFO L481 AbstractCegarLoop]: Abstraction has 5918 states and 9041 transitions. [2020-10-28 18:50:52,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:50:52,988 INFO L276 IsEmpty]: Start isEmpty. Operand 5918 states and 9041 transitions. [2020-10-28 18:50:52,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-28 18:50:52,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:50:52,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:50:52,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 18:50:52,990 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:50:52,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:50:52,991 INFO L82 PathProgramCache]: Analyzing trace with hash 374017679, now seen corresponding path program 1 times [2020-10-28 18:50:52,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:50:52,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731794566] [2020-10-28 18:50:52,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:50:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:53,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:53,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:53,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:53,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:53,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:54,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:54,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:55,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:55,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:55,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:56,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:56,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:56,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:57,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:57,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:58,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:58,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 18:50:58,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 18:50:58,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 18:50:58,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:58,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:58,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:50:58,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:50:58,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 18:50:58,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:50:58,437 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:50:58,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:50:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:58,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:58,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:58,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:50:58,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:50:58,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 18:50:58,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:58,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:58,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:50:58,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:50:58,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:50:58,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:50:58,505 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 18:50:58,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731794566] [2020-10-28 18:50:58,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:50:58,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:50:58,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996201393] [2020-10-28 18:50:58,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:50:58,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:50:58,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:50:58,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:50:58,507 INFO L87 Difference]: Start difference. First operand 5918 states and 9041 transitions. Second operand 6 states. [2020-10-28 18:50:58,894 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:51:00,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:51:00,498 INFO L93 Difference]: Finished difference Result 11741 states and 17984 transitions. [2020-10-28 18:51:00,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:51:00,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-10-28 18:51:00,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:51:00,512 INFO L225 Difference]: With dead ends: 11741 [2020-10-28 18:51:00,512 INFO L226 Difference]: Without dead ends: 5918 [2020-10-28 18:51:00,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:51:00,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5918 states. [2020-10-28 18:51:01,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5918 to 5918. [2020-10-28 18:51:01,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5918 states. [2020-10-28 18:51:01,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5918 states to 5918 states and 8975 transitions. [2020-10-28 18:51:01,129 INFO L78 Accepts]: Start accepts. Automaton has 5918 states and 8975 transitions. Word has length 138 [2020-10-28 18:51:01,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:51:01,129 INFO L481 AbstractCegarLoop]: Abstraction has 5918 states and 8975 transitions. [2020-10-28 18:51:01,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:51:01,129 INFO L276 IsEmpty]: Start isEmpty. Operand 5918 states and 8975 transitions. [2020-10-28 18:51:01,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-28 18:51:01,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:51:01,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:51:01,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 18:51:01,132 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:51:01,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:51:01,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1759940739, now seen corresponding path program 1 times [2020-10-28 18:51:01,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:51:01,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601488120] [2020-10-28 18:51:01,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:51:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:51:01,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:01,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:01,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:01,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:02,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:02,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:02,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:03,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:03,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:03,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:03,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:04,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:05,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:05,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:05,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:06,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:06,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:51:06,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-28 18:51:06,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 18:51:06,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 18:51:06,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:51:06,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:51:06,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:51:06,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 18:51:06,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 18:51:06,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:51:06,555 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:51:06,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:51:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:51:06,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:06,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:51:06,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:51:06,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:51:06,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 18:51:06,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:51:06,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:51:06,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:51:06,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:51:06,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:51:06,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:51:06,616 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 18:51:06,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601488120] [2020-10-28 18:51:06,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:51:06,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:51:06,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029293197] [2020-10-28 18:51:06,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:51:06,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:51:06,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:51:06,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:51:06,618 INFO L87 Difference]: Start difference. First operand 5918 states and 8975 transitions. Second operand 6 states. [2020-10-28 18:51:06,990 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-28 18:51:07,993 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 18:51:08,421 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-28 18:51:09,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:51:09,952 INFO L93 Difference]: Finished difference Result 16522 states and 25129 transitions. [2020-10-28 18:51:09,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:51:09,952 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-10-28 18:51:09,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:51:09,978 INFO L225 Difference]: With dead ends: 16522 [2020-10-28 18:51:09,979 INFO L226 Difference]: Without dead ends: 11063 [2020-10-28 18:51:09,991 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 18:51:10,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11063 states. [2020-10-28 18:51:11,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11063 to 8769. [2020-10-28 18:51:11,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8769 states. [2020-10-28 18:51:11,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8769 states to 8769 states and 13347 transitions. [2020-10-28 18:51:11,016 INFO L78 Accepts]: Start accepts. Automaton has 8769 states and 13347 transitions. Word has length 139 [2020-10-28 18:51:11,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:51:11,016 INFO L481 AbstractCegarLoop]: Abstraction has 8769 states and 13347 transitions. [2020-10-28 18:51:11,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:51:11,016 INFO L276 IsEmpty]: Start isEmpty. Operand 8769 states and 13347 transitions. [2020-10-28 18:51:11,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-28 18:51:11,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:51:11,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:51:11,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 18:51:11,021 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:51:11,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:51:11,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1857317934, now seen corresponding path program 1 times [2020-10-28 18:51:11,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:51:11,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966526322] [2020-10-28 18:51:11,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:51:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:51:11,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:11,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:11,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:11,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:11,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:13,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:13,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:13,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:14,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:15,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:15,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:15,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:16,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:51:16,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-28 18:51:16,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:51:16,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 18:51:16,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:51:16,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:51:16,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:51:16,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 18:51:16,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 18:51:16,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:51:16,446 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:51:16,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:51:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:51:16,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:16,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:51:16,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:51:16,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:51:16,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 18:51:16,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:51:16,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:51:16,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:51:16,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:51:16,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:51:16,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:51:16,581 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 18:51:16,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966526322] [2020-10-28 18:51:16,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:51:16,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:51:16,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51110234] [2020-10-28 18:51:16,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:51:16,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:51:16,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:51:16,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:51:16,583 INFO L87 Difference]: Start difference. First operand 8769 states and 13347 transitions. Second operand 6 states. [2020-10-28 18:51:16,977 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-28 18:51:18,045 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 18:51:18,461 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-28 18:51:20,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:51:20,836 INFO L93 Difference]: Finished difference Result 26964 states and 41049 transitions. [2020-10-28 18:51:20,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:51:20,837 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-10-28 18:51:20,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:51:20,875 INFO L225 Difference]: With dead ends: 26964 [2020-10-28 18:51:20,876 INFO L226 Difference]: Without dead ends: 18713 [2020-10-28 18:51:20,896 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 18:51:20,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18713 states. [2020-10-28 18:51:22,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18713 to 14451. [2020-10-28 18:51:22,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14451 states. [2020-10-28 18:51:22,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14451 states to 14451 states and 22059 transitions. [2020-10-28 18:51:22,783 INFO L78 Accepts]: Start accepts. Automaton has 14451 states and 22059 transitions. Word has length 139 [2020-10-28 18:51:22,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:51:22,783 INFO L481 AbstractCegarLoop]: Abstraction has 14451 states and 22059 transitions. [2020-10-28 18:51:22,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:51:22,783 INFO L276 IsEmpty]: Start isEmpty. Operand 14451 states and 22059 transitions. [2020-10-28 18:51:22,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-28 18:51:22,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:51:22,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:51:22,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 18:51:22,787 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:51:22,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:51:22,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1940997327, now seen corresponding path program 1 times [2020-10-28 18:51:22,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:51:22,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249788411] [2020-10-28 18:51:22,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:51:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:51:22,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:22,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:23,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:23,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:23,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:23,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:23,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:24,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:24,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:25,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:25,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:26,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:26,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:26,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:27,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:27,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:51:27,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-28 18:51:27,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 18:51:27,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 18:51:27,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:51:27,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:51:27,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:51:27,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 18:51:27,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 18:51:27,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:51:28,178 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:51:28,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:51:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:51:28,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:28,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:51:28,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:51:28,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:51:28,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:51:28,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:51:28,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:51:28,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:51:28,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:51:28,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:51:28,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:51:28,243 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 18:51:28,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249788411] [2020-10-28 18:51:28,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:51:28,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:51:28,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247048663] [2020-10-28 18:51:28,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:51:28,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:51:28,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:51:28,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:51:28,246 INFO L87 Difference]: Start difference. First operand 14451 states and 22059 transitions. Second operand 6 states. [2020-10-28 18:51:28,607 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-28 18:51:29,652 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 18:51:30,036 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-28 18:51:32,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:51:32,928 INFO L93 Difference]: Finished difference Result 36432 states and 55497 transitions. [2020-10-28 18:51:32,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:51:32,928 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-10-28 18:51:32,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:51:32,962 INFO L225 Difference]: With dead ends: 36432 [2020-10-28 18:51:32,963 INFO L226 Difference]: Without dead ends: 22597 [2020-10-28 18:51:32,988 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 18:51:33,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22597 states. [2020-10-28 18:51:35,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22597 to 17311. [2020-10-28 18:51:35,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17311 states. [2020-10-28 18:51:35,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17311 states to 17311 states and 26443 transitions. [2020-10-28 18:51:35,270 INFO L78 Accepts]: Start accepts. Automaton has 17311 states and 26443 transitions. Word has length 139 [2020-10-28 18:51:35,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:51:35,270 INFO L481 AbstractCegarLoop]: Abstraction has 17311 states and 26443 transitions. [2020-10-28 18:51:35,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:51:35,270 INFO L276 IsEmpty]: Start isEmpty. Operand 17311 states and 26443 transitions. [2020-10-28 18:51:35,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-28 18:51:35,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:51:35,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:51:35,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 18:51:35,275 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:51:35,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:51:35,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1804794399, now seen corresponding path program 1 times [2020-10-28 18:51:35,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:51:35,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465884763] [2020-10-28 18:51:35,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:51:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:51:35,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:35,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:35,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:35,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:35,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:36,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:36,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:37,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:37,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:37,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:37,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:37,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:40,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:51:40,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-28 18:51:40,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:51:40,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 18:51:40,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:51:40,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:51:40,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:51:40,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 18:51:40,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 18:51:40,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:51:40,695 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:51:40,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:51:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:51:40,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:40,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:51:40,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:51:40,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:51:40,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:51:40,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:51:40,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:51:40,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:51:40,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:51:40,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:51:40,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:51:40,750 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 18:51:40,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465884763] [2020-10-28 18:51:40,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:51:40,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:51:40,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110328994] [2020-10-28 18:51:40,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:51:40,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:51:40,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:51:40,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:51:40,752 INFO L87 Difference]: Start difference. First operand 17311 states and 26443 transitions. Second operand 6 states. [2020-10-28 18:51:41,106 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-28 18:51:42,289 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 18:51:42,644 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-28 18:51:45,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:51:45,705 INFO L93 Difference]: Finished difference Result 42112 states and 64153 transitions. [2020-10-28 18:51:45,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:51:45,706 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-10-28 18:51:45,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:51:45,737 INFO L225 Difference]: With dead ends: 42112 [2020-10-28 18:51:45,737 INFO L226 Difference]: Without dead ends: 25485 [2020-10-28 18:51:45,760 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 18:51:45,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25485 states. [2020-10-28 18:51:48,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25485 to 20103. [2020-10-28 18:51:48,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20103 states. [2020-10-28 18:51:48,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20103 states to 20103 states and 30723 transitions. [2020-10-28 18:51:48,425 INFO L78 Accepts]: Start accepts. Automaton has 20103 states and 30723 transitions. Word has length 139 [2020-10-28 18:51:48,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:51:48,425 INFO L481 AbstractCegarLoop]: Abstraction has 20103 states and 30723 transitions. [2020-10-28 18:51:48,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:51:48,425 INFO L276 IsEmpty]: Start isEmpty. Operand 20103 states and 30723 transitions. [2020-10-28 18:51:48,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-28 18:51:48,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:51:48,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:51:48,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 18:51:48,436 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:51:48,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:51:48,437 INFO L82 PathProgramCache]: Analyzing trace with hash -185048107, now seen corresponding path program 1 times [2020-10-28 18:51:48,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:51:48,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134810871] [2020-10-28 18:51:48,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:51:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:51:48,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:48,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:48,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:48,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:49,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:49,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:49,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:49,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:50,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:50,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:50,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:51,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:51,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:51,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:52,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:52,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:53,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:53,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:51:53,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-28 18:51:53,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 18:51:53,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 18:51:53,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:51:53,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:51:53,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:51:53,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 18:51:53,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 18:51:53,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:51:53,868 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:51:53,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:51:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:51:53,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:53,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:51:53,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:51:53,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:51:53,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 18:51:53,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:51:53,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:51:53,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:51:53,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:51:53,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:51:53,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:51:53,962 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 18:51:53,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134810871] [2020-10-28 18:51:53,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:51:53,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:51:53,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676571834] [2020-10-28 18:51:53,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:51:53,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:51:53,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:51:53,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:51:53,971 INFO L87 Difference]: Start difference. First operand 20103 states and 30723 transitions. Second operand 5 states. [2020-10-28 18:51:54,345 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 18:51:55,399 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-28 18:51:59,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:51:59,516 INFO L93 Difference]: Finished difference Result 56389 states and 85951 transitions. [2020-10-28 18:51:59,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:51:59,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-28 18:51:59,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:51:59,565 INFO L225 Difference]: With dead ends: 56389 [2020-10-28 18:51:59,565 INFO L226 Difference]: Without dead ends: 36970 [2020-10-28 18:51:59,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:51:59,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36970 states. [2020-10-28 18:52:04,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36970 to 36759. [2020-10-28 18:52:04,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36759 states. [2020-10-28 18:52:04,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36759 states to 36759 states and 55587 transitions. [2020-10-28 18:52:04,169 INFO L78 Accepts]: Start accepts. Automaton has 36759 states and 55587 transitions. Word has length 139 [2020-10-28 18:52:04,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:52:04,170 INFO L481 AbstractCegarLoop]: Abstraction has 36759 states and 55587 transitions. [2020-10-28 18:52:04,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:52:04,170 INFO L276 IsEmpty]: Start isEmpty. Operand 36759 states and 55587 transitions. [2020-10-28 18:52:04,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-28 18:52:04,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:52:04,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:52:04,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 18:52:04,173 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:52:04,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:52:04,174 INFO L82 PathProgramCache]: Analyzing trace with hash -115126282, now seen corresponding path program 1 times [2020-10-28 18:52:04,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:52:04,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068707021] [2020-10-28 18:52:04,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:52:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:52:04,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:04,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:04,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:04,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:04,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:04,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:04,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:05,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:05,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:06,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:06,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:06,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:07,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:08,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:08,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:08,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:09,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:52:09,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-28 18:52:09,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 18:52:09,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:52:09,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:52:09,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:52:09,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:52:09,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-28 18:52:09,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 18:52:09,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:52:09,549 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:52:09,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:52:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:52:09,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:09,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:52:09,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:52:09,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:52:09,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 18:52:09,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:52:09,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:52:09,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:52:09,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:52:09,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:52:09,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:52:09,601 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 18:52:09,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068707021] [2020-10-28 18:52:09,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:52:09,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:52:09,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214434953] [2020-10-28 18:52:09,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:52:09,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:52:09,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:52:09,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:52:09,604 INFO L87 Difference]: Start difference. First operand 36759 states and 55587 transitions. Second operand 4 states. [2020-10-28 18:52:09,970 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 18:52:15,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:52:15,795 INFO L93 Difference]: Finished difference Result 74349 states and 112567 transitions. [2020-10-28 18:52:15,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:52:15,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-10-28 18:52:15,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:52:15,840 INFO L225 Difference]: With dead ends: 74349 [2020-10-28 18:52:15,840 INFO L226 Difference]: Without dead ends: 39554 [2020-10-28 18:52:15,873 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 18:52:15,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39554 states. [2020-10-28 18:52:20,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39554 to 39551. [2020-10-28 18:52:20,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39551 states. [2020-10-28 18:52:20,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39551 states to 39551 states and 59771 transitions. [2020-10-28 18:52:20,781 INFO L78 Accepts]: Start accepts. Automaton has 39551 states and 59771 transitions. Word has length 139 [2020-10-28 18:52:20,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:52:20,781 INFO L481 AbstractCegarLoop]: Abstraction has 39551 states and 59771 transitions. [2020-10-28 18:52:20,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:52:20,782 INFO L276 IsEmpty]: Start isEmpty. Operand 39551 states and 59771 transitions. [2020-10-28 18:52:20,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-28 18:52:20,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:52:20,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:52:20,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 18:52:20,786 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:52:20,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:52:20,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1397581861, now seen corresponding path program 1 times [2020-10-28 18:52:20,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:52:20,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686533633] [2020-10-28 18:52:20,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:52:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:52:20,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:20,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:21,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:21,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:21,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:21,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:22,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:22,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:23,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:23,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:23,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:23,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:24,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:24,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:25,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:25,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:25,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:52:25,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-28 18:52:25,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 18:52:25,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 18:52:25,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:52:25,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:52:25,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:52:25,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 18:52:25,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 18:52:25,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:52:26,200 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:52:26,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:52:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:52:26,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:26,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:52:26,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:52:26,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:52:26,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:52:26,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:52:26,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:52:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:52:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:52:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:52:26,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:52:26,254 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 18:52:26,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686533633] [2020-10-28 18:52:26,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:52:26,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:52:26,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887217170] [2020-10-28 18:52:26,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:52:26,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:52:26,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:52:26,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:52:26,256 INFO L87 Difference]: Start difference. First operand 39551 states and 59771 transitions. Second operand 6 states. [2020-10-28 18:52:26,633 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-28 18:52:27,675 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 18:52:28,041 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-28 18:52:35,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:52:35,018 INFO L93 Difference]: Finished difference Result 91836 states and 138505 transitions. [2020-10-28 18:52:35,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:52:35,019 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-10-28 18:52:35,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:52:35,089 INFO L225 Difference]: With dead ends: 91836 [2020-10-28 18:52:35,090 INFO L226 Difference]: Without dead ends: 54249 [2020-10-28 18:52:35,126 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 18:52:35,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54249 states. [2020-10-28 18:52:40,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54249 to 44919. [2020-10-28 18:52:40,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44919 states. [2020-10-28 18:52:40,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44919 states to 44919 states and 67891 transitions. [2020-10-28 18:52:40,743 INFO L78 Accepts]: Start accepts. Automaton has 44919 states and 67891 transitions. Word has length 139 [2020-10-28 18:52:40,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:52:40,744 INFO L481 AbstractCegarLoop]: Abstraction has 44919 states and 67891 transitions. [2020-10-28 18:52:40,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:52:40,744 INFO L276 IsEmpty]: Start isEmpty. Operand 44919 states and 67891 transitions. [2020-10-28 18:52:40,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-28 18:52:40,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:52:40,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:52:40,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 18:52:40,747 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:52:40,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:52:40,747 INFO L82 PathProgramCache]: Analyzing trace with hash 341952294, now seen corresponding path program 1 times [2020-10-28 18:52:40,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:52:40,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631391655] [2020-10-28 18:52:40,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:52:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:52:40,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:40,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:40,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:41,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:41,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:41,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:41,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:42,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:42,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:43,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:43,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:44,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:45,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:45,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:52:45,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-28 18:52:45,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:52:45,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 18:52:45,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:52:45,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:52:45,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:52:45,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 18:52:45,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 18:52:45,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:52:46,154 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:52:46,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:52:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:52:46,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:52:46,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:52:46,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:52:46,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:52:46,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:52:46,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:52:46,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:52:46,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:52:46,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:52:46,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:52:46,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:52:46,206 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 18:52:46,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631391655] [2020-10-28 18:52:46,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:52:46,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:52:46,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071418902] [2020-10-28 18:52:46,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:52:46,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:52:46,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:52:46,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:52:46,208 INFO L87 Difference]: Start difference. First operand 44919 states and 67891 transitions. Second operand 6 states. [2020-10-28 18:52:46,568 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-28 18:52:47,664 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 18:52:48,031 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-28 18:52:55,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:52:55,527 INFO L93 Difference]: Finished difference Result 104020 states and 156845 transitions. [2020-10-28 18:52:55,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:52:55,527 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-10-28 18:52:55,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:52:55,592 INFO L225 Difference]: With dead ends: 104020 [2020-10-28 18:52:55,592 INFO L226 Difference]: Without dead ends: 61073 [2020-10-28 18:52:55,631 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 18:52:55,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61073 states.