/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:30:25,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:30:25,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:30:25,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:30:25,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:30:25,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:30:25,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:30:25,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:30:25,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:30:25,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:30:25,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:30:25,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:30:25,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:30:25,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:30:25,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:30:25,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:30:25,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:30:25,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:30:25,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:30:25,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:30:25,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:30:25,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:30:25,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:30:25,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:30:25,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:30:25,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:30:25,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:30:25,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:30:25,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:30:25,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:30:25,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:30:25,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:30:25,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:30:25,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:30:25,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:30:25,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:30:25,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:30:25,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:30:25,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:30:25,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:30:25,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:30:25,248 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 00:30:25,334 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:30:25,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:30:25,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:30:25,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:30:25,341 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:30:25,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:30:25,342 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:30:25,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:30:25,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:30:25,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:30:25,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:30:25,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:30:25,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:30:25,345 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:30:25,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:30:25,345 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:30:25,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:30:25,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:30:25,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:30:25,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:30:25,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:30:25,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:30:25,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:30:25,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:30:25,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:30:25,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:30:25,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:30:25,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:30:25,350 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:30:25,351 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:30:25,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:30:25,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:30:25,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:30:25,743 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:30:25,743 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:30:25,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:30:25,825 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11db0ce96/4c8d7fd14580463eb95408e66e8ce231/FLAG0f04838e0 [2020-10-28 00:30:26,534 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:30:26,534 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:30:26,554 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11db0ce96/4c8d7fd14580463eb95408e66e8ce231/FLAG0f04838e0 [2020-10-28 00:30:26,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/11db0ce96/4c8d7fd14580463eb95408e66e8ce231 [2020-10-28 00:30:26,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:30:26,825 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:30:26,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:30:26,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:30:26,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:30:26,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:30:26" (1/1) ... [2020-10-28 00:30:26,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1496ac95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:30:26, skipping insertion in model container [2020-10-28 00:30:26,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:30:26" (1/1) ... [2020-10-28 00:30:26,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:30:26,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:30:27,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:30:27,383 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:30:27,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:30:27,628 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:30:27,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:30:27 WrapperNode [2020-10-28 00:30:27,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:30:27,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:30:27,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:30:27,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:30:27,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:30:27" (1/1) ... [2020-10-28 00:30:27,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:30:27" (1/1) ... [2020-10-28 00:30:27,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:30:27" (1/1) ... [2020-10-28 00:30:27,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:30:27" (1/1) ... [2020-10-28 00:30:27,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:30:27" (1/1) ... [2020-10-28 00:30:27,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:30:27" (1/1) ... [2020-10-28 00:30:27,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:30:27" (1/1) ... [2020-10-28 00:30:27,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:30:27,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:30:27,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:30:27,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:30:27,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:30:27" (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 00:30:27,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:30:27,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:30:27,842 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:30:27,843 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:30:27,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:30:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:30:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:30:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:30:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:30:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:30:27,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 00:30:27,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:30:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:30:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:30:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:30:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:30:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:30:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:30:27,848 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:30:27,848 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:30:27,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:30:27,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:30:27,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:30:27,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:30:27,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:30:27,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:30:29,507 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:30:29,508 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:30:29,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:30:29 BoogieIcfgContainer [2020-10-28 00:30:29,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:30:29,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:30:29,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:30:29,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:30:29,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:30:26" (1/3) ... [2020-10-28 00:30:29,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51350a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:30:29, skipping insertion in model container [2020-10-28 00:30:29,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:30:27" (2/3) ... [2020-10-28 00:30:29,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51350a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:30:29, skipping insertion in model container [2020-10-28 00:30:29,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:30:29" (3/3) ... [2020-10-28 00:30:29,519 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:30:29,530 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:30:29,536 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:30:29,550 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:30:29,579 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:30:29,579 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:30:29,579 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:30:29,580 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:30:29,580 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:30:29,580 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:30:29,580 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:30:29,580 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:30:29,605 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states. [2020-10-28 00:30:29,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 00:30:29,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:30:29,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:29,624 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:30:29,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:30:29,630 INFO L82 PathProgramCache]: Analyzing trace with hash -477280769, now seen corresponding path program 1 times [2020-10-28 00:30:29,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:30:29,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443649906] [2020-10-28 00:30:29,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:30:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:30,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:30,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:30,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:31,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:31,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:31,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:31,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:31,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:31,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:32,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:33,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:33,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:35,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:35,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 00:30:35,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:30:35,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 00:30:35,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:30:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 00:30:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 00:30:35,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:30:35,668 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:30:35,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:30:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:35,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:35,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:35,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:30:35,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:30:35,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 00:30:35,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:35,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:30:35,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:30:35,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:30:35,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:35,773 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 00:30:35,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443649906] [2020-10-28 00:30:35,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:30:35,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:30:35,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742450705] [2020-10-28 00:30:35,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:30:35,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:30:35,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:30:35,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:30:35,800 INFO L87 Difference]: Start difference. First operand 353 states. Second operand 4 states. [2020-10-28 00:30:36,333 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 00:30:38,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:30:38,437 INFO L93 Difference]: Finished difference Result 697 states and 1202 transitions. [2020-10-28 00:30:38,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:30:38,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-28 00:30:38,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:30:38,491 INFO L225 Difference]: With dead ends: 697 [2020-10-28 00:30:38,491 INFO L226 Difference]: Without dead ends: 563 [2020-10-28 00:30:38,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:30:38,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-10-28 00:30:38,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 560. [2020-10-28 00:30:38,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-28 00:30:38,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 835 transitions. [2020-10-28 00:30:38,641 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 835 transitions. Word has length 160 [2020-10-28 00:30:38,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:30:38,642 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 835 transitions. [2020-10-28 00:30:38,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:30:38,642 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 835 transitions. [2020-10-28 00:30:38,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 00:30:38,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:30:38,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:30:38,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:30:38,654 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:30:38,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:30:38,655 INFO L82 PathProgramCache]: Analyzing trace with hash -955239738, now seen corresponding path program 1 times [2020-10-28 00:30:38,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:30:38,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363434783] [2020-10-28 00:30:38,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:30:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:38,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:38,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:39,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:39,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:39,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:39,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:39,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:39,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:39,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:39,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:40,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:40,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:43,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:43,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 00:30:43,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:30:43,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 00:30:43,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:43,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:30:43,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 00:30:43,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 00:30:43,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:44,206 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:30:44,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:30:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:44,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:44,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:44,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:30:44,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:30:44,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 00:30:44,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:44,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:30:44,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:30:44,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:30:44,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:30:44,288 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 00:30:44,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363434783] [2020-10-28 00:30:44,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:30:44,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:30:44,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627569777] [2020-10-28 00:30:44,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:30:44,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:30:44,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:30:44,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:30:44,292 INFO L87 Difference]: Start difference. First operand 560 states and 835 transitions. Second operand 4 states. [2020-10-28 00:30:44,716 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 00:30:46,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:30:46,256 INFO L93 Difference]: Finished difference Result 1190 states and 1822 transitions. [2020-10-28 00:30:46,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:30:46,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-28 00:30:46,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:30:46,264 INFO L225 Difference]: With dead ends: 1190 [2020-10-28 00:30:46,264 INFO L226 Difference]: Without dead ends: 975 [2020-10-28 00:30:46,267 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 00:30:46,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2020-10-28 00:30:46,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2020-10-28 00:30:46,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 972 states. [2020-10-28 00:30:46,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1463 transitions. [2020-10-28 00:30:46,316 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1463 transitions. Word has length 160 [2020-10-28 00:30:46,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:30:46,317 INFO L481 AbstractCegarLoop]: Abstraction has 972 states and 1463 transitions. [2020-10-28 00:30:46,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:30:46,318 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1463 transitions. [2020-10-28 00:30:46,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 00:30:46,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:30:46,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:30:46,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:30:46,322 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:30:46,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:30:46,323 INFO L82 PathProgramCache]: Analyzing trace with hash 883241763, now seen corresponding path program 1 times [2020-10-28 00:30:46,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:30:46,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373953149] [2020-10-28 00:30:46,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:30:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:46,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:46,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:46,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:46,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:46,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:46,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:46,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:46,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:47,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:47,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:47,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:47,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:51,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:51,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 00:30:51,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:30:51,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 00:30:51,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:51,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:30:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:30:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 00:30:51,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:51,902 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:30:51,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:30:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:51,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:51,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:51,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:30:51,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:30:51,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 00:30:51,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:51,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:30:51,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:30:51,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:30:51,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:30:52,040 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 00:30:52,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373953149] [2020-10-28 00:30:52,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:30:52,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:30:52,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092950910] [2020-10-28 00:30:52,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:30:52,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:30:52,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:30:52,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:30:52,046 INFO L87 Difference]: Start difference. First operand 972 states and 1463 transitions. Second operand 5 states. [2020-10-28 00:30:54,212 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:30:55,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:30:55,196 INFO L93 Difference]: Finished difference Result 2823 states and 4238 transitions. [2020-10-28 00:30:55,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:30:55,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-28 00:30:55,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:30:55,207 INFO L225 Difference]: With dead ends: 2823 [2020-10-28 00:30:55,207 INFO L226 Difference]: Without dead ends: 1872 [2020-10-28 00:30:55,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:30:55,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2020-10-28 00:30:55,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1869. [2020-10-28 00:30:55,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1869 states. [2020-10-28 00:30:55,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2786 transitions. [2020-10-28 00:30:55,303 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2786 transitions. Word has length 160 [2020-10-28 00:30:55,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:30:55,304 INFO L481 AbstractCegarLoop]: Abstraction has 1869 states and 2786 transitions. [2020-10-28 00:30:55,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:30:55,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2786 transitions. [2020-10-28 00:30:55,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-28 00:30:55,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:30:55,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:30:55,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:30:55,309 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:30:55,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:30:55,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1023540186, now seen corresponding path program 1 times [2020-10-28 00:30:55,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:30:55,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030443469] [2020-10-28 00:30:55,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:30:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:55,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:55,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:55,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:55,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:55,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:55,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:55,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:55,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:56,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:56,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:58,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:00,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:00,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 00:31:00,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:31:00,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 00:31:00,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:31:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 00:31:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:31:00,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 00:31:00,815 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:31:00,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:31:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:00,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:00,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:00,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:31:00,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:31:00,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 00:31:00,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:00,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:31:00,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:31:00,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:31:00,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:31:00,908 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 00:31:00,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030443469] [2020-10-28 00:31:00,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:31:00,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:31:00,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339323391] [2020-10-28 00:31:00,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:31:00,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:31:00,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:31:00,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:31:00,911 INFO L87 Difference]: Start difference. First operand 1869 states and 2786 transitions. Second operand 4 states. [2020-10-28 00:31:03,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:31:03,968 INFO L93 Difference]: Finished difference Result 5555 states and 8280 transitions. [2020-10-28 00:31:03,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 00:31:03,969 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-10-28 00:31:03,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:31:03,989 INFO L225 Difference]: With dead ends: 5555 [2020-10-28 00:31:03,989 INFO L226 Difference]: Without dead ends: 3714 [2020-10-28 00:31:03,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:31:03,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2020-10-28 00:31:04,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 1871. [2020-10-28 00:31:04,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1871 states. [2020-10-28 00:31:04,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 2788 transitions. [2020-10-28 00:31:04,139 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 2788 transitions. Word has length 161 [2020-10-28 00:31:04,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:31:04,140 INFO L481 AbstractCegarLoop]: Abstraction has 1871 states and 2788 transitions. [2020-10-28 00:31:04,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:31:04,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 2788 transitions. [2020-10-28 00:31:04,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-28 00:31:04,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:31:04,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:31:04,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:31:04,144 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:31:04,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:31:04,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1200331428, now seen corresponding path program 1 times [2020-10-28 00:31:04,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:31:04,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790793755] [2020-10-28 00:31:04,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:31:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:04,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:04,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:04,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:04,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:04,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:04,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:04,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:04,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:04,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:04,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:05,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:05,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:05,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:07,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:07,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:07,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:07,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:07,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:09,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:09,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 00:31:09,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 00:31:09,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 00:31:09,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:09,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:31:09,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 00:31:09,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 00:31:09,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:09,564 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:31:09,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:31:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:09,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:09,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:09,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:31:09,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:31:09,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:31:09,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:09,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:31:09,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:31:09,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:31:09,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:09,640 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 00:31:09,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790793755] [2020-10-28 00:31:09,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:31:09,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:31:09,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702610778] [2020-10-28 00:31:09,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:31:09,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:31:09,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:31:09,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:31:09,642 INFO L87 Difference]: Start difference. First operand 1871 states and 2788 transitions. Second operand 4 states. [2020-10-28 00:31:11,933 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 00:31:12,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:31:12,968 INFO L93 Difference]: Finished difference Result 5306 states and 7915 transitions. [2020-10-28 00:31:12,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:31:12,969 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2020-10-28 00:31:12,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:31:12,987 INFO L225 Difference]: With dead ends: 5306 [2020-10-28 00:31:12,988 INFO L226 Difference]: Without dead ends: 3612 [2020-10-28 00:31:12,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 00:31:12,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3612 states. [2020-10-28 00:31:13,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3612 to 3609. [2020-10-28 00:31:13,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3609 states. [2020-10-28 00:31:13,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 5326 transitions. [2020-10-28 00:31:13,178 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 5326 transitions. Word has length 162 [2020-10-28 00:31:13,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:31:13,178 INFO L481 AbstractCegarLoop]: Abstraction has 3609 states and 5326 transitions. [2020-10-28 00:31:13,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:31:13,178 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 5326 transitions. [2020-10-28 00:31:13,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-28 00:31:13,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:31:13,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:31:13,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:31:13,185 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:31:13,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:31:13,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1963063937, now seen corresponding path program 1 times [2020-10-28 00:31:13,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:31:13,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640024619] [2020-10-28 00:31:13,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:31:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:13,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:13,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:13,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:13,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:13,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:13,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:13,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:13,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:13,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:13,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:13,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:13,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:14,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:14,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:16,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:16,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:16,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:16,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:18,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:18,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:18,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:18,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 00:31:18,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-28 00:31:18,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 00:31:18,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:18,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:31:18,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 00:31:18,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 00:31:18,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:18,719 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:31:18,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:31:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:18,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:18,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:18,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:31:18,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:31:18,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 00:31:18,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:18,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:31:18,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:31:18,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:31:18,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:18,790 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 00:31:18,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640024619] [2020-10-28 00:31:18,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:31:18,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:31:18,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575178860] [2020-10-28 00:31:18,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:31:18,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:31:18,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:31:18,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:31:18,794 INFO L87 Difference]: Start difference. First operand 3609 states and 5326 transitions. Second operand 5 states. [2020-10-28 00:31:20,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:31:20,458 INFO L93 Difference]: Finished difference Result 6208 states and 9180 transitions. [2020-10-28 00:31:20,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:31:20,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-28 00:31:20,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:31:20,473 INFO L225 Difference]: With dead ends: 6208 [2020-10-28 00:31:20,474 INFO L226 Difference]: Without dead ends: 2764 [2020-10-28 00:31:20,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:31:20,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2020-10-28 00:31:20,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2764. [2020-10-28 00:31:20,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2764 states. [2020-10-28 00:31:20,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 4069 transitions. [2020-10-28 00:31:20,610 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 4069 transitions. Word has length 162 [2020-10-28 00:31:20,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:31:20,610 INFO L481 AbstractCegarLoop]: Abstraction has 2764 states and 4069 transitions. [2020-10-28 00:31:20,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:31:20,610 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 4069 transitions. [2020-10-28 00:31:20,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 00:31:20,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:31:20,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:31:20,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:31:20,616 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:31:20,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:31:20,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1058431830, now seen corresponding path program 1 times [2020-10-28 00:31:20,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:31:20,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367337067] [2020-10-28 00:31:20,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:31:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:20,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:20,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:20,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:20,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:20,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:21,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:21,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:21,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:21,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:21,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:21,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:21,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:22,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:23,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:25,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:25,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 00:31:25,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:31:25,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 00:31:25,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:25,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 00:31:25,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-28 00:31:25,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 00:31:25,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:26,114 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:31:26,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:31:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:26,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:26,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:26,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:31:26,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:31:26,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:31:26,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:26,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:31:26,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:31:26,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:31:26,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:26,171 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 00:31:26,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367337067] [2020-10-28 00:31:26,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:31:26,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 00:31:26,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210439431] [2020-10-28 00:31:26,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 00:31:26,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:31:26,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 00:31:26,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 00:31:26,174 INFO L87 Difference]: Start difference. First operand 2764 states and 4069 transitions. Second operand 10 states. [2020-10-28 00:31:26,610 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 00:31:29,640 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 209 [2020-10-28 00:31:30,406 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2020-10-28 00:31:30,817 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 00:31:32,410 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 208 [2020-10-28 00:31:33,183 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 208 [2020-10-28 00:31:33,568 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-28 00:31:33,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:31:33,837 INFO L93 Difference]: Finished difference Result 12798 states and 19322 transitions. [2020-10-28 00:31:33,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 00:31:33,838 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 164 [2020-10-28 00:31:33,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:31:33,892 INFO L225 Difference]: With dead ends: 12798 [2020-10-28 00:31:33,892 INFO L226 Difference]: Without dead ends: 11075 [2020-10-28 00:31:33,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=278, Invalid=844, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 00:31:33,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11075 states. [2020-10-28 00:31:34,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11075 to 6499. [2020-10-28 00:31:34,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6499 states. [2020-10-28 00:31:34,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6499 states to 6499 states and 9662 transitions. [2020-10-28 00:31:34,319 INFO L78 Accepts]: Start accepts. Automaton has 6499 states and 9662 transitions. Word has length 164 [2020-10-28 00:31:34,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:31:34,320 INFO L481 AbstractCegarLoop]: Abstraction has 6499 states and 9662 transitions. [2020-10-28 00:31:34,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 00:31:34,320 INFO L276 IsEmpty]: Start isEmpty. Operand 6499 states and 9662 transitions. [2020-10-28 00:31:34,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 00:31:34,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:31:34,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:31:34,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:31:34,330 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:31:34,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:31:34,331 INFO L82 PathProgramCache]: Analyzing trace with hash 315652643, now seen corresponding path program 1 times [2020-10-28 00:31:34,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:31:34,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932116144] [2020-10-28 00:31:34,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:31:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:34,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:34,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:34,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:34,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:34,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:34,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:34,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:34,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:34,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:35,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:35,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:35,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:38,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:38,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:38,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:38,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:39,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:39,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 00:31:39,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:31:39,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 00:31:39,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:31:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 00:31:39,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 00:31:39,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 00:31:39,742 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:31:39,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:31:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:39,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:39,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:39,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:31:39,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:31:39,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:31:39,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:39,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:31:39,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:31:39,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:31:39,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:39,796 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 00:31:39,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932116144] [2020-10-28 00:31:39,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:31:39,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:31:39,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388110781] [2020-10-28 00:31:39,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:31:39,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:31:39,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:31:39,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:31:39,805 INFO L87 Difference]: Start difference. First operand 6499 states and 9662 transitions. Second operand 4 states. [2020-10-28 00:31:42,277 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 00:31:42,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:31:42,608 INFO L93 Difference]: Finished difference Result 15398 states and 23097 transitions. [2020-10-28 00:31:42,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:31:42,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2020-10-28 00:31:42,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:31:42,633 INFO L225 Difference]: With dead ends: 15398 [2020-10-28 00:31:42,633 INFO L226 Difference]: Without dead ends: 9178 [2020-10-28 00:31:42,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 00:31:42,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9178 states. [2020-10-28 00:31:43,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9178 to 8107. [2020-10-28 00:31:43,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8107 states. [2020-10-28 00:31:43,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8107 states to 8107 states and 12284 transitions. [2020-10-28 00:31:43,196 INFO L78 Accepts]: Start accepts. Automaton has 8107 states and 12284 transitions. Word has length 164 [2020-10-28 00:31:43,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:31:43,197 INFO L481 AbstractCegarLoop]: Abstraction has 8107 states and 12284 transitions. [2020-10-28 00:31:43,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:31:43,197 INFO L276 IsEmpty]: Start isEmpty. Operand 8107 states and 12284 transitions. [2020-10-28 00:31:43,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-28 00:31:43,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:31:43,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:31:43,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:31:43,209 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:31:43,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:31:43,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1643946258, now seen corresponding path program 1 times [2020-10-28 00:31:43,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:31:43,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050074400] [2020-10-28 00:31:43,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:31:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:43,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:43,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:43,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:43,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:43,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:43,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:43,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:43,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:43,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:44,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:44,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:44,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:47,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:47,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:47,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:47,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:48,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:48,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 00:31:48,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:31:48,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 00:31:48,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:48,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:31:48,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 00:31:48,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 00:31:48,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:48,615 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:31:48,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:31:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:48,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:48,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:48,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:31:48,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:31:48,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:31:48,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:48,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:31:48,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:31:48,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:31:48,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:48,670 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 00:31:48,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050074400] [2020-10-28 00:31:48,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:31:48,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:31:48,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452189351] [2020-10-28 00:31:48,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:31:48,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:31:48,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:31:48,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:31:48,673 INFO L87 Difference]: Start difference. First operand 8107 states and 12284 transitions. Second operand 4 states. [2020-10-28 00:31:50,987 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 00:31:51,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:31:51,555 INFO L93 Difference]: Finished difference Result 20938 states and 32133 transitions. [2020-10-28 00:31:51,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:31:51,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-28 00:31:51,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:31:51,579 INFO L225 Difference]: With dead ends: 20938 [2020-10-28 00:31:51,580 INFO L226 Difference]: Without dead ends: 13178 [2020-10-28 00:31:51,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 00:31:51,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13178 states. [2020-10-28 00:31:52,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13178 to 11679. [2020-10-28 00:31:52,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11679 states. [2020-10-28 00:31:52,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11679 states to 11679 states and 18078 transitions. [2020-10-28 00:31:52,424 INFO L78 Accepts]: Start accepts. Automaton has 11679 states and 18078 transitions. Word has length 166 [2020-10-28 00:31:52,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:31:52,424 INFO L481 AbstractCegarLoop]: Abstraction has 11679 states and 18078 transitions. [2020-10-28 00:31:52,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:31:52,425 INFO L276 IsEmpty]: Start isEmpty. Operand 11679 states and 18078 transitions. [2020-10-28 00:31:52,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-28 00:31:52,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:31:52,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:31:52,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:31:52,435 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:31:52,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:31:52,435 INFO L82 PathProgramCache]: Analyzing trace with hash -147417364, now seen corresponding path program 1 times [2020-10-28 00:31:52,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:31:52,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911708886] [2020-10-28 00:31:52,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:31:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:52,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:52,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:52,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:52,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:52,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:52,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:52,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:52,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:52,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:53,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:54,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:54,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:55,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:57,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:57,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 00:31:57,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:31:57,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 00:31:57,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:57,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 00:31:57,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 00:31:57,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 00:31:57,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:57,925 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:31:57,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:31:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:31:57,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:31:57,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:31:57,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:31:57,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:31:57,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:31:57,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:31:57,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:31:57,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:31:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:31:57,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:31:57,976 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 00:31:57,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911708886] [2020-10-28 00:31:57,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:31:57,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 00:31:57,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87791478] [2020-10-28 00:31:57,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 00:31:57,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:31:57,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 00:31:57,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 00:31:57,978 INFO L87 Difference]: Start difference. First operand 11679 states and 18078 transitions. Second operand 10 states. [2020-10-28 00:31:58,366 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-28 00:32:01,558 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-28 00:32:01,972 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 00:32:02,345 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 00:32:02,790 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:32:03,204 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 00:32:03,602 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 00:32:04,018 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 00:32:04,417 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 00:32:04,806 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-28 00:32:05,176 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 00:32:05,592 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 00:32:05,992 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-28 00:32:08,911 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 00:32:09,333 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 00:32:09,777 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-28 00:32:10,179 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 00:32:10,639 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 00:32:11,051 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-28 00:32:11,513 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-28 00:32:11,991 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:32:14,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:32:14,912 INFO L93 Difference]: Finished difference Result 91714 states and 144765 transitions. [2020-10-28 00:32:14,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-28 00:32:14,912 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-10-28 00:32:14,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:32:15,061 INFO L225 Difference]: With dead ends: 91714 [2020-10-28 00:32:15,061 INFO L226 Difference]: Without dead ends: 83195 [2020-10-28 00:32:15,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=952, Invalid=3338, Unknown=0, NotChecked=0, Total=4290 [2020-10-28 00:32:15,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83195 states. [2020-10-28 00:32:18,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83195 to 43192. [2020-10-28 00:32:18,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43192 states. [2020-10-28 00:32:18,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43192 states to 43192 states and 67807 transitions. [2020-10-28 00:32:18,975 INFO L78 Accepts]: Start accepts. Automaton has 43192 states and 67807 transitions. Word has length 167 [2020-10-28 00:32:18,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:32:18,975 INFO L481 AbstractCegarLoop]: Abstraction has 43192 states and 67807 transitions. [2020-10-28 00:32:18,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 00:32:18,975 INFO L276 IsEmpty]: Start isEmpty. Operand 43192 states and 67807 transitions. [2020-10-28 00:32:18,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-28 00:32:18,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:32:18,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:32:18,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:32:18,997 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:32:18,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:32:18,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1234251333, now seen corresponding path program 1 times [2020-10-28 00:32:18,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:32:18,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157380733] [2020-10-28 00:32:18,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:32:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:32:19,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:19,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:19,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:19,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:19,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:19,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:19,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:19,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:19,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:19,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:19,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:19,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:21,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:21,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:21,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:22,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:23,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:24,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:32:24,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 00:32:24,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 00:32:24,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 00:32:24,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:32:24,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:32:24,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:32:24,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 00:32:24,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:32:24,424 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:32:24,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:32:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:32:24,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:24,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:32:24,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:32:24,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:32:24,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:32:24,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:32:24,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:32:24,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:32:24,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:32:24,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:32:24,477 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 00:32:24,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157380733] [2020-10-28 00:32:24,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:32:24,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:32:24,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119322596] [2020-10-28 00:32:24,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:32:24,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:32:24,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:32:24,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:32:24,479 INFO L87 Difference]: Start difference. First operand 43192 states and 67807 transitions. Second operand 5 states. [2020-10-28 00:32:27,116 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:32:31,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:32:31,521 INFO L93 Difference]: Finished difference Result 114611 states and 179804 transitions. [2020-10-28 00:32:31,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:32:31,522 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-28 00:32:31,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:32:31,660 INFO L225 Difference]: With dead ends: 114611 [2020-10-28 00:32:31,661 INFO L226 Difference]: Without dead ends: 71440 [2020-10-28 00:32:31,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:32:31,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71440 states. [2020-10-28 00:32:36,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71440 to 71436. [2020-10-28 00:32:36,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71436 states. [2020-10-28 00:32:36,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71436 states to 71436 states and 111116 transitions. [2020-10-28 00:32:36,774 INFO L78 Accepts]: Start accepts. Automaton has 71436 states and 111116 transitions. Word has length 167 [2020-10-28 00:32:36,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:32:36,775 INFO L481 AbstractCegarLoop]: Abstraction has 71436 states and 111116 transitions. [2020-10-28 00:32:36,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:32:36,775 INFO L276 IsEmpty]: Start isEmpty. Operand 71436 states and 111116 transitions. [2020-10-28 00:32:36,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-28 00:32:36,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:32:36,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:32:36,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:32:36,807 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:32:36,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:32:36,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1971275179, now seen corresponding path program 1 times [2020-10-28 00:32:36,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:32:36,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864681881] [2020-10-28 00:32:36,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:32:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:32:36,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:36,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:36,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:37,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:37,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:37,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:37,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:37,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:37,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:37,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:37,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:37,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:38,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:41,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:32:41,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-28 00:32:41,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:32:41,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 00:32:41,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:32:41,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:32:41,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 00:32:41,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 00:32:41,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:32:42,281 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:32:42,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:32:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:32:42,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:42,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:32:42,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:32:42,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:32:42,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:32:42,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:32:42,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:32:42,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:32:42,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:32:42,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:32:42,339 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 00:32:42,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864681881] [2020-10-28 00:32:42,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:32:42,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:32:42,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114662178] [2020-10-28 00:32:42,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:32:42,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:32:42,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:32:42,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:32:42,342 INFO L87 Difference]: Start difference. First operand 71436 states and 111116 transitions. Second operand 5 states. [2020-10-28 00:32:47,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:32:47,488 INFO L93 Difference]: Finished difference Result 130369 states and 202831 transitions. [2020-10-28 00:32:47,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:32:47,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-28 00:32:47,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:32:47,618 INFO L225 Difference]: With dead ends: 130369 [2020-10-28 00:32:47,618 INFO L226 Difference]: Without dead ends: 71436 [2020-10-28 00:32:47,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:32:47,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71436 states. [2020-10-28 00:32:52,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71436 to 71436. [2020-10-28 00:32:52,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71436 states. [2020-10-28 00:32:52,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71436 states to 71436 states and 111115 transitions. [2020-10-28 00:32:52,472 INFO L78 Accepts]: Start accepts. Automaton has 71436 states and 111115 transitions. Word has length 169 [2020-10-28 00:32:52,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:32:52,472 INFO L481 AbstractCegarLoop]: Abstraction has 71436 states and 111115 transitions. [2020-10-28 00:32:52,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:32:52,472 INFO L276 IsEmpty]: Start isEmpty. Operand 71436 states and 111115 transitions. [2020-10-28 00:32:52,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-28 00:32:52,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:32:52,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:32:52,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 00:32:52,505 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:32:52,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:32:52,505 INFO L82 PathProgramCache]: Analyzing trace with hash 330515304, now seen corresponding path program 1 times [2020-10-28 00:32:52,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:32:52,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446716659] [2020-10-28 00:32:52,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:32:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:32:52,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:52,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:52,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:52,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:52,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:52,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:52,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:52,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:52,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:53,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:55,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:55,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:55,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:57,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:57,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:32:57,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-28 00:32:57,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:32:57,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 00:32:57,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:32:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:32:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 00:32:57,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 00:32:57,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:32:57,930 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:32:57,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:32:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:32:57,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:32:57,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:32:57,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:32:57,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:32:57,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:32:57,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:32:57,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:32:57,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:32:57,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:32:57,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:32:58,012 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 00:32:58,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446716659] [2020-10-28 00:32:58,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:32:58,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:32:58,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618005599] [2020-10-28 00:32:58,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:32:58,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:32:58,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:32:58,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:32:58,018 INFO L87 Difference]: Start difference. First operand 71436 states and 111115 transitions. Second operand 4 states. [2020-10-28 00:33:00,590 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 00:33:06,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:33:06,705 INFO L93 Difference]: Finished difference Result 182584 states and 283673 transitions. [2020-10-28 00:33:06,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:33:06,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2020-10-28 00:33:06,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:33:06,911 INFO L225 Difference]: With dead ends: 182584 [2020-10-28 00:33:06,912 INFO L226 Difference]: Without dead ends: 111761 [2020-10-28 00:33:07,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 00:33:07,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111761 states. [2020-10-28 00:33:14,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111761 to 111758. [2020-10-28 00:33:14,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111758 states. [2020-10-28 00:33:14,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111758 states to 111758 states and 171937 transitions. [2020-10-28 00:33:14,739 INFO L78 Accepts]: Start accepts. Automaton has 111758 states and 171937 transitions. Word has length 169 [2020-10-28 00:33:14,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:33:14,740 INFO L481 AbstractCegarLoop]: Abstraction has 111758 states and 171937 transitions. [2020-10-28 00:33:14,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:33:14,740 INFO L276 IsEmpty]: Start isEmpty. Operand 111758 states and 171937 transitions. [2020-10-28 00:33:14,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-28 00:33:14,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:33:14,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:33:14,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 00:33:14,772 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:33:14,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:33:14,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1015806758, now seen corresponding path program 1 times [2020-10-28 00:33:14,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:33:14,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441417365] [2020-10-28 00:33:14,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:33:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:33:14,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:14,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:14,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:14,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:14,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:15,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:15,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:15,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:15,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:15,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:16,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:18,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:18,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:19,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:19,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:19,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:19,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:33:19,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-28 00:33:19,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:33:19,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 00:33:19,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:33:19,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:33:19,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 00:33:19,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 00:33:19,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:33:20,183 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:33:20,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:33:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:33:20,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:20,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:33:20,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:33:20,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:33:20,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:33:20,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:33:20,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:33:20,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:33:20,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:33:20,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:33:20,269 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 00:33:20,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441417365] [2020-10-28 00:33:20,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:33:20,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:33:20,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101205671] [2020-10-28 00:33:20,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:33:20,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:33:20,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:33:20,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:33:20,274 INFO L87 Difference]: Start difference. First operand 111758 states and 171937 transitions. Second operand 4 states. [2020-10-28 00:33:27,443 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 00:33:35,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:33:35,351 INFO L93 Difference]: Finished difference Result 308600 states and 478763 transitions. [2020-10-28 00:33:35,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:33:35,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-10-28 00:33:35,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:33:35,879 INFO L225 Difference]: With dead ends: 308600 [2020-10-28 00:33:35,879 INFO L226 Difference]: Without dead ends: 198013 [2020-10-28 00:33:35,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 00:33:36,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198013 states. [2020-10-28 00:33:48,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198013 to 182322. [2020-10-28 00:33:48,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182322 states. [2020-10-28 00:33:49,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182322 states to 182322 states and 285369 transitions. [2020-10-28 00:33:49,010 INFO L78 Accepts]: Start accepts. Automaton has 182322 states and 285369 transitions. Word has length 173 [2020-10-28 00:33:49,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:33:49,011 INFO L481 AbstractCegarLoop]: Abstraction has 182322 states and 285369 transitions. [2020-10-28 00:33:49,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:33:49,011 INFO L276 IsEmpty]: Start isEmpty. Operand 182322 states and 285369 transitions. [2020-10-28 00:33:49,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-28 00:33:49,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:33:49,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:33:49,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 00:33:49,041 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:33:49,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:33:49,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1717736316, now seen corresponding path program 1 times [2020-10-28 00:33:49,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:33:49,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725759434] [2020-10-28 00:33:49,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:33:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:33:49,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:49,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:49,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:49,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:49,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:49,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:49,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:49,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:49,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:50,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:50,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:50,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking...