/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:59:35,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:59:35,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:59:35,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:59:35,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:59:35,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:59:35,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:59:35,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:59:35,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:59:35,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:59:35,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:59:35,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:59:35,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:59:35,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:59:35,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:59:35,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:59:35,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:59:35,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:59:35,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:59:35,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:59:35,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:59:35,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:59:35,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:59:35,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:59:35,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:59:35,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:59:35,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:59:35,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:59:35,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:59:35,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:59:35,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:59:35,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:59:35,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:59:35,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:59:35,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:59:35,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:59:35,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:59:35,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:59:35,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:59:35,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:59:35,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:59:35,857 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 [2020-10-29 13:59:35,886 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:59:35,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:59:35,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:59:35,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:59:35,889 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:59:35,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:59:35,890 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:59:35,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:59:35,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:59:35,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:59:35,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:59:35,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:59:35,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:59:35,891 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:59:35,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:59:35,892 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:59:35,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:59:35,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:59:35,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:59:35,893 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:59:35,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:59:35,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:59:35,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:59:35,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:59:35,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:59:35,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:59:35,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:59:35,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:59:35,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:59:35,896 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:59:36,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:59:36,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:59:36,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:59:36,368 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:59:36,369 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:59:36,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-10-29 13:59:36,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b7ad6e03/1a33c2fed7f245e1a0b1652ed34261e2/FLAG0aae97d81 [2020-10-29 13:59:37,207 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:59:37,209 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-10-29 13:59:37,228 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b7ad6e03/1a33c2fed7f245e1a0b1652ed34261e2/FLAG0aae97d81 [2020-10-29 13:59:37,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b7ad6e03/1a33c2fed7f245e1a0b1652ed34261e2 [2020-10-29 13:59:37,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:59:37,470 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:59:37,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:59:37,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:59:37,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:59:37,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:59:37" (1/1) ... [2020-10-29 13:59:37,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@151f1b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:37, skipping insertion in model container [2020-10-29 13:59:37,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:59:37" (1/1) ... [2020-10-29 13:59:37,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:59:37,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:59:37,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:59:37,870 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:59:37,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:59:37,983 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:59:37,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:37 WrapperNode [2020-10-29 13:59:37,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:59:37,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:59:37,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:59:37,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:59:38,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:37" (1/1) ... [2020-10-29 13:59:38,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:37" (1/1) ... [2020-10-29 13:59:38,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:37" (1/1) ... [2020-10-29 13:59:38,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:37" (1/1) ... [2020-10-29 13:59:38,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:37" (1/1) ... [2020-10-29 13:59:38,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:37" (1/1) ... [2020-10-29 13:59:38,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:37" (1/1) ... [2020-10-29 13:59:38,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:59:38,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:59:38,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:59:38,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:59:38,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:37" (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 [2020-10-29 13:59:38,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:59:38,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:59:38,232 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:59:38,232 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:59:38,233 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:59:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:59:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:59:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:59:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:59:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:59:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:59:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:59:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:59:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:59:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:59:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:59:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:59:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:59:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:59:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:59:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:59:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:59:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:59:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:59:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:59:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:59:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:59:39,405 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:59:39,406 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:59:39,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:59:39 BoogieIcfgContainer [2020-10-29 13:59:39,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:59:39,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:59:39,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:59:39,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:59:39,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:59:37" (1/3) ... [2020-10-29 13:59:39,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60517119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:59:39, skipping insertion in model container [2020-10-29 13:59:39,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:37" (2/3) ... [2020-10-29 13:59:39,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60517119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:59:39, skipping insertion in model container [2020-10-29 13:59:39,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:59:39" (3/3) ... [2020-10-29 13:59:39,420 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-10-29 13:59:39,435 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:59:39,441 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:59:39,459 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:59:39,508 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:59:39,509 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:59:39,509 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:59:39,509 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:59:39,509 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:59:39,510 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:59:39,510 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:59:39,510 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:59:39,546 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2020-10-29 13:59:39,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 13:59:39,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:39,566 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] [2020-10-29 13:59:39,566 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:39,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:39,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1233459878, now seen corresponding path program 1 times [2020-10-29 13:59:39,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:39,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050699908] [2020-10-29 13:59:39,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:40,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:40,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:40,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:41,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:42,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:42,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 13:59:42,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 13:59:42,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2896 [2020-10-29 13:59:42,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:42,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:42,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:59:42,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 13:59:42,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 13:59:42,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 13:59:43,468 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:59:43,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:43,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:43,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:43,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:43,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:43,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:59:43,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:43,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:43,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:43,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:43,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:43,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:59:43,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:43,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050699908] [2020-10-29 13:59:43,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:43,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:59:43,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468595619] [2020-10-29 13:59:43,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:59:43,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:43,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:59:43,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:59:43,590 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 4 states. [2020-10-29 13:59:44,009 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-29 13:59:44,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:44,861 INFO L93 Difference]: Finished difference Result 338 states and 566 transitions. [2020-10-29 13:59:44,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:59:44,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-29 13:59:44,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:44,876 INFO L225 Difference]: With dead ends: 338 [2020-10-29 13:59:44,876 INFO L226 Difference]: Without dead ends: 233 [2020-10-29 13:59:44,881 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 [2020-10-29 13:59:44,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-29 13:59:44,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 230. [2020-10-29 13:59:44,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-29 13:59:44,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 362 transitions. [2020-10-29 13:59:44,956 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 362 transitions. Word has length 67 [2020-10-29 13:59:44,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:44,957 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 362 transitions. [2020-10-29 13:59:44,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:59:44,957 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 362 transitions. [2020-10-29 13:59:44,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 13:59:44,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:44,961 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] [2020-10-29 13:59:44,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:59:44,962 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:44,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:44,962 INFO L82 PathProgramCache]: Analyzing trace with hash 309649509, now seen corresponding path program 1 times [2020-10-29 13:59:44,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:44,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800785686] [2020-10-29 13:59:44,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:45,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:45,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:45,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:45,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:47,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:50,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:50,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 13:59:50,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:59:50,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:59:50,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:50,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:50,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:50,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:50,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 13:59:50,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 13:59:50,474 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:59:50,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:50,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:50,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:50,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:50,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:50,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 13:59:50,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:50,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:50,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:50,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:50,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:50,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:59:50,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:50,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800785686] [2020-10-29 13:59:50,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:50,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:50,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730569642] [2020-10-29 13:59:50,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:50,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:50,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:50,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:50,561 INFO L87 Difference]: Start difference. First operand 230 states and 362 transitions. Second operand 5 states. [2020-10-29 13:59:51,876 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:59:51,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:51,977 INFO L93 Difference]: Finished difference Result 599 states and 959 transitions. [2020-10-29 13:59:51,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:51,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-29 13:59:51,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:51,987 INFO L225 Difference]: With dead ends: 599 [2020-10-29 13:59:51,987 INFO L226 Difference]: Without dead ends: 430 [2020-10-29 13:59:51,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:59:51,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-10-29 13:59:52,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 427. [2020-10-29 13:59:52,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-10-29 13:59:52,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 670 transitions. [2020-10-29 13:59:52,067 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 670 transitions. Word has length 69 [2020-10-29 13:59:52,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:52,068 INFO L481 AbstractCegarLoop]: Abstraction has 427 states and 670 transitions. [2020-10-29 13:59:52,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:52,068 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 670 transitions. [2020-10-29 13:59:52,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 13:59:52,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:52,073 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] [2020-10-29 13:59:52,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:59:52,073 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:52,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:52,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1064832472, now seen corresponding path program 1 times [2020-10-29 13:59:52,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:52,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622375905] [2020-10-29 13:59:52,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:52,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:52,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:52,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:52,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:53,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:56,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:56,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 13:59:56,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:59:56,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4307 [2020-10-29 13:59:56,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:56,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:56,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:56,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:56,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 13:59:56,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:56,851 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:59:56,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:56,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:56,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:56,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:56,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:56,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:59:56,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:56,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:56,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:59:56,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:56,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622375905] [2020-10-29 13:59:56,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:56,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:56,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720277583] [2020-10-29 13:59:56,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:56,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:56,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:56,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:56,912 INFO L87 Difference]: Start difference. First operand 427 states and 670 transitions. Second operand 5 states. [2020-10-29 13:59:58,229 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:59:58,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:58,349 INFO L93 Difference]: Finished difference Result 1142 states and 1824 transitions. [2020-10-29 13:59:58,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:58,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-29 13:59:58,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:58,355 INFO L225 Difference]: With dead ends: 1142 [2020-10-29 13:59:58,356 INFO L226 Difference]: Without dead ends: 819 [2020-10-29 13:59:58,362 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 [2020-10-29 13:59:58,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-10-29 13:59:58,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 816. [2020-10-29 13:59:58,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-10-29 13:59:58,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1274 transitions. [2020-10-29 13:59:58,464 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1274 transitions. Word has length 70 [2020-10-29 13:59:58,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:58,465 INFO L481 AbstractCegarLoop]: Abstraction has 816 states and 1274 transitions. [2020-10-29 13:59:58,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:58,465 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1274 transitions. [2020-10-29 13:59:58,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 13:59:58,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:58,475 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] [2020-10-29 13:59:58,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:59:58,476 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:58,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:58,480 INFO L82 PathProgramCache]: Analyzing trace with hash -2019754633, now seen corresponding path program 1 times [2020-10-29 13:59:58,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:58,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906439586] [2020-10-29 13:59:58,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:58,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:58,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:58,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:58,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:58,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:00,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:03,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:03,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 14:00:03,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:00:03,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 14:00:03,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:03,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:03,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:03,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:00:03,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 14:00:03,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:04,092 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 14:00:04,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:04,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:04,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:04,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:04,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:04,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:00:04,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:04,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:04,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:04,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:04,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:04,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:00:04,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:04,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906439586] [2020-10-29 14:00:04,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:04,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:04,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192934007] [2020-10-29 14:00:04,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:04,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:04,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:04,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:04,158 INFO L87 Difference]: Start difference. First operand 816 states and 1274 transitions. Second operand 5 states. [2020-10-29 14:00:05,379 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 14:00:05,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:05,555 INFO L93 Difference]: Finished difference Result 2333 states and 3632 transitions. [2020-10-29 14:00:05,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:00:05,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-29 14:00:05,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:05,565 INFO L225 Difference]: With dead ends: 2333 [2020-10-29 14:00:05,565 INFO L226 Difference]: Without dead ends: 1546 [2020-10-29 14:00:05,568 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 [2020-10-29 14:00:05,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2020-10-29 14:00:05,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1543. [2020-10-29 14:00:05,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1543 states. [2020-10-29 14:00:05,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2384 transitions. [2020-10-29 14:00:05,711 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2384 transitions. Word has length 70 [2020-10-29 14:00:05,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:05,712 INFO L481 AbstractCegarLoop]: Abstraction has 1543 states and 2384 transitions. [2020-10-29 14:00:05,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:05,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2384 transitions. [2020-10-29 14:00:05,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 14:00:05,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:05,715 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] [2020-10-29 14:00:05,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:00:05,715 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:05,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:05,716 INFO L82 PathProgramCache]: Analyzing trace with hash 213130055, now seen corresponding path program 1 times [2020-10-29 14:00:05,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:05,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459525467] [2020-10-29 14:00:05,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:05,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:05,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:05,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:05,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:06,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:06,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:08,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:10,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:10,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 14:00:10,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:00:10,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 14:00:10,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:10,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:10,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:10,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:00:10,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 14:00:10,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:11,303 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 14:00:11,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:11,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:11,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:11,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:11,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:11,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 14:00:11,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:11,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:11,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:11,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:11,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:11,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:00:11,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:11,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459525467] [2020-10-29 14:00:11,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:11,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:11,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49130993] [2020-10-29 14:00:11,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:11,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:11,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:11,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:11,381 INFO L87 Difference]: Start difference. First operand 1543 states and 2384 transitions. Second operand 5 states. [2020-10-29 14:00:12,751 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 14:00:12,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:12,993 INFO L93 Difference]: Finished difference Result 4298 states and 6701 transitions. [2020-10-29 14:00:12,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:00:12,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-29 14:00:12,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:13,011 INFO L225 Difference]: With dead ends: 4298 [2020-10-29 14:00:13,011 INFO L226 Difference]: Without dead ends: 2958 [2020-10-29 14:00:13,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:00:13,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-10-29 14:00:13,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 2955. [2020-10-29 14:00:13,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2955 states. [2020-10-29 14:00:13,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 4535 transitions. [2020-10-29 14:00:13,387 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 4535 transitions. Word has length 71 [2020-10-29 14:00:13,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:13,389 INFO L481 AbstractCegarLoop]: Abstraction has 2955 states and 4535 transitions. [2020-10-29 14:00:13,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:13,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 4535 transitions. [2020-10-29 14:00:13,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 14:00:13,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:13,396 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] [2020-10-29 14:00:13,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:00:13,396 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:13,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:13,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1131152968, now seen corresponding path program 1 times [2020-10-29 14:00:13,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:13,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474557756] [2020-10-29 14:00:13,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:13,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:13,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:13,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:13,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:13,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:15,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:15,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 14:00:15,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:00:15,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1603 [2020-10-29 14:00:15,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:15,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:15,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:00:15,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 14:00:15,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 14:00:15,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 14:00:15,400 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 14:00:15,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:15,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:15,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:15,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:15,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:15,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:00:15,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:15,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:15,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:15,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:15,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:15,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:15,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:15,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474557756] [2020-10-29 14:00:15,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:15,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:00:15,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696829879] [2020-10-29 14:00:15,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:00:15,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:15,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:00:15,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:00:15,439 INFO L87 Difference]: Start difference. First operand 2955 states and 4535 transitions. Second operand 4 states. [2020-10-29 14:00:15,803 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-29 14:00:16,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:16,906 INFO L93 Difference]: Finished difference Result 7297 states and 11691 transitions. [2020-10-29 14:00:16,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:00:16,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-29 14:00:16,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:16,932 INFO L225 Difference]: With dead ends: 7297 [2020-10-29 14:00:16,932 INFO L226 Difference]: Without dead ends: 5006 [2020-10-29 14:00:16,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:16,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5006 states. [2020-10-29 14:00:17,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5006 to 5003. [2020-10-29 14:00:17,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5003 states. [2020-10-29 14:00:17,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5003 states to 5003 states and 7879 transitions. [2020-10-29 14:00:17,410 INFO L78 Accepts]: Start accepts. Automaton has 5003 states and 7879 transitions. Word has length 71 [2020-10-29 14:00:17,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:17,410 INFO L481 AbstractCegarLoop]: Abstraction has 5003 states and 7879 transitions. [2020-10-29 14:00:17,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:00:17,411 INFO L276 IsEmpty]: Start isEmpty. Operand 5003 states and 7879 transitions. [2020-10-29 14:00:17,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 14:00:17,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:17,417 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] [2020-10-29 14:00:17,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:00:17,417 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:17,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:17,418 INFO L82 PathProgramCache]: Analyzing trace with hash 175148071, now seen corresponding path program 1 times [2020-10-29 14:00:17,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:17,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509444164] [2020-10-29 14:00:17,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:17,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:17,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:17,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:17,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:17,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:17,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:18,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:20,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:20,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 14:00:20,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:00:20,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2943 [2020-10-29 14:00:20,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:20,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:20,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:20,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:00:20,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 14:00:20,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:20,779 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 14:00:20,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:20,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:20,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:20,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:20,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:20,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:00:20,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:20,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:20,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:20,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:20,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:20,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:20,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:20,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509444164] [2020-10-29 14:00:20,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:20,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:20,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567356072] [2020-10-29 14:00:20,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:20,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:20,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:20,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:20,832 INFO L87 Difference]: Start difference. First operand 5003 states and 7879 transitions. Second operand 5 states. [2020-10-29 14:00:22,527 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 14:00:23,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:23,272 INFO L93 Difference]: Finished difference Result 14171 states and 22429 transitions. [2020-10-29 14:00:23,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:00:23,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-29 14:00:23,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:23,322 INFO L225 Difference]: With dead ends: 14171 [2020-10-29 14:00:23,322 INFO L226 Difference]: Without dead ends: 9560 [2020-10-29 14:00:23,336 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 [2020-10-29 14:00:23,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9560 states. [2020-10-29 14:00:24,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9560 to 9557. [2020-10-29 14:00:24,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9557 states. [2020-10-29 14:00:24,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9557 states to 9557 states and 14889 transitions. [2020-10-29 14:00:24,314 INFO L78 Accepts]: Start accepts. Automaton has 9557 states and 14889 transitions. Word has length 74 [2020-10-29 14:00:24,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:24,315 INFO L481 AbstractCegarLoop]: Abstraction has 9557 states and 14889 transitions. [2020-10-29 14:00:24,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:24,315 INFO L276 IsEmpty]: Start isEmpty. Operand 9557 states and 14889 transitions. [2020-10-29 14:00:24,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 14:00:24,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:24,328 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] [2020-10-29 14:00:24,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:00:24,329 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:24,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:24,331 INFO L82 PathProgramCache]: Analyzing trace with hash -433399397, now seen corresponding path program 1 times [2020-10-29 14:00:24,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:24,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550174503] [2020-10-29 14:00:24,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:24,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:24,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:24,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:24,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:24,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:25,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:25,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:27,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:29,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:29,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 14:00:29,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:00:29,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 14:00:29,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:29,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:29,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:29,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:00:29,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 14:00:29,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:29,782 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 14:00:29,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:29,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:29,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:29,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:29,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:29,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:00:29,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:29,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:29,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:29,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:29,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:29,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:29,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:29,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550174503] [2020-10-29 14:00:29,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:29,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:29,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926808907] [2020-10-29 14:00:29,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:29,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:29,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:29,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:29,822 INFO L87 Difference]: Start difference. First operand 9557 states and 14889 transitions. Second operand 5 states. [2020-10-29 14:00:30,197 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-29 14:00:32,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:32,275 INFO L93 Difference]: Finished difference Result 16969 states and 26466 transitions. [2020-10-29 14:00:32,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:00:32,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-29 14:00:32,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:32,329 INFO L225 Difference]: With dead ends: 16969 [2020-10-29 14:00:32,329 INFO L226 Difference]: Without dead ends: 12414 [2020-10-29 14:00:32,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:00:32,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12414 states. [2020-10-29 14:00:33,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12414 to 12411. [2020-10-29 14:00:33,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12411 states. [2020-10-29 14:00:33,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12411 states to 12411 states and 18966 transitions. [2020-10-29 14:00:33,483 INFO L78 Accepts]: Start accepts. Automaton has 12411 states and 18966 transitions. Word has length 74 [2020-10-29 14:00:33,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:33,483 INFO L481 AbstractCegarLoop]: Abstraction has 12411 states and 18966 transitions. [2020-10-29 14:00:33,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:33,484 INFO L276 IsEmpty]: Start isEmpty. Operand 12411 states and 18966 transitions. [2020-10-29 14:00:33,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 14:00:33,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:33,497 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] [2020-10-29 14:00:33,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:00:33,498 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:33,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:33,498 INFO L82 PathProgramCache]: Analyzing trace with hash 494135313, now seen corresponding path program 1 times [2020-10-29 14:00:33,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:33,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891908327] [2020-10-29 14:00:33,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:33,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:33,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:33,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:33,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:33,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:33,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:36,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:38,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:38,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 14:00:38,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:00:38,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 14:00:38,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:38,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:00:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 14:00:38,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:38,900 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 14:00:38,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:38,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:38,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:38,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:38,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:38,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:00:38,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:38,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:38,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:38,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:38,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:38,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:38,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:38,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891908327] [2020-10-29 14:00:38,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:38,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:38,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455392767] [2020-10-29 14:00:38,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:38,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:38,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:38,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:38,933 INFO L87 Difference]: Start difference. First operand 12411 states and 18966 transitions. Second operand 5 states. [2020-10-29 14:00:40,838 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 14:00:41,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:41,816 INFO L93 Difference]: Finished difference Result 35870 states and 54801 transitions. [2020-10-29 14:00:41,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:00:41,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-29 14:00:41,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:41,876 INFO L225 Difference]: With dead ends: 35870 [2020-10-29 14:00:41,876 INFO L226 Difference]: Without dead ends: 23813 [2020-10-29 14:00:41,905 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 [2020-10-29 14:00:41,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23813 states. [2020-10-29 14:00:44,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23813 to 23810. [2020-10-29 14:00:44,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23810 states. [2020-10-29 14:00:44,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23810 states to 23810 states and 35983 transitions. [2020-10-29 14:00:44,122 INFO L78 Accepts]: Start accepts. Automaton has 23810 states and 35983 transitions. Word has length 74 [2020-10-29 14:00:44,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:44,122 INFO L481 AbstractCegarLoop]: Abstraction has 23810 states and 35983 transitions. [2020-10-29 14:00:44,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:44,123 INFO L276 IsEmpty]: Start isEmpty. Operand 23810 states and 35983 transitions. [2020-10-29 14:00:44,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 14:00:44,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:44,151 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] [2020-10-29 14:00:44,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:00:44,151 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:44,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:44,152 INFO L82 PathProgramCache]: Analyzing trace with hash 677298846, now seen corresponding path program 1 times [2020-10-29 14:00:44,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:44,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401506173] [2020-10-29 14:00:44,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:44,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:44,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:44,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:44,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:44,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:44,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:49,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:49,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:49,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 14:00:49,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:00:49,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 14:00:49,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:49,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:49,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:00:49,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 14:00:49,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 14:00:49,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:49,545 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 14:00:49,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:49,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:49,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:49,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:49,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:49,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:00:49,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:49,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:49,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:49,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:49,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401506173] [2020-10-29 14:00:49,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:49,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:00:49,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972827629] [2020-10-29 14:00:49,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:00:49,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:49,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:00:49,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:00:49,580 INFO L87 Difference]: Start difference. First operand 23810 states and 35983 transitions. Second operand 4 states. [2020-10-29 14:00:49,943 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-29 14:00:53,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:53,478 INFO L93 Difference]: Finished difference Result 55368 states and 86163 transitions. [2020-10-29 14:00:53,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:00:53,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-10-29 14:00:53,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:53,550 INFO L225 Difference]: With dead ends: 55368 [2020-10-29 14:00:53,550 INFO L226 Difference]: Without dead ends: 35461 [2020-10-29 14:00:53,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:53,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35461 states. [2020-10-29 14:00:56,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35461 to 35458. [2020-10-29 14:00:56,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35458 states. [2020-10-29 14:00:56,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35458 states to 35458 states and 52911 transitions. [2020-10-29 14:00:56,921 INFO L78 Accepts]: Start accepts. Automaton has 35458 states and 52911 transitions. Word has length 75 [2020-10-29 14:00:56,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:56,921 INFO L481 AbstractCegarLoop]: Abstraction has 35458 states and 52911 transitions. [2020-10-29 14:00:56,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:00:56,921 INFO L276 IsEmpty]: Start isEmpty. Operand 35458 states and 52911 transitions. [2020-10-29 14:00:56,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 14:00:56,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:56,956 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] [2020-10-29 14:00:56,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:00:56,957 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:56,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:56,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1811444415, now seen corresponding path program 1 times [2020-10-29 14:00:56,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:56,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035785821] [2020-10-29 14:00:56,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:56,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:57,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:57,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:57,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:57,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:57,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:57,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:01,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:01,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 14:01:01,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:01:01,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 14:01:01,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:01,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:01,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:01:01,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:01:01,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 14:01:01,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:02,408 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 14:01:02,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:02,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:02,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:02,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:02,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:02,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:01:02,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:02,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:02,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:02,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:02,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:02,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:02,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035785821] [2020-10-29 14:01:02,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:02,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:01:02,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499960477] [2020-10-29 14:01:02,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:01:02,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:02,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:01:02,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:02,458 INFO L87 Difference]: Start difference. First operand 35458 states and 52911 transitions. Second operand 5 states. [2020-10-29 14:01:02,842 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-29 14:01:07,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:07,768 INFO L93 Difference]: Finished difference Result 57896 states and 86391 transitions. [2020-10-29 14:01:07,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:01:07,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-29 14:01:07,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:07,836 INFO L225 Difference]: With dead ends: 57896 [2020-10-29 14:01:07,836 INFO L226 Difference]: Without dead ends: 40037 [2020-10-29 14:01:07,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:01:07,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40037 states. [2020-10-29 14:01:11,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40037 to 40034. [2020-10-29 14:01:11,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40034 states. [2020-10-29 14:01:11,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40034 states to 40034 states and 59043 transitions. [2020-10-29 14:01:11,449 INFO L78 Accepts]: Start accepts. Automaton has 40034 states and 59043 transitions. Word has length 78 [2020-10-29 14:01:11,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:11,449 INFO L481 AbstractCegarLoop]: Abstraction has 40034 states and 59043 transitions. [2020-10-29 14:01:11,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:01:11,450 INFO L276 IsEmpty]: Start isEmpty. Operand 40034 states and 59043 transitions. [2020-10-29 14:01:11,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 14:01:11,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:11,475 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] [2020-10-29 14:01:11,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:01:11,476 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:11,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:11,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1303410491, now seen corresponding path program 1 times [2020-10-29 14:01:11,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:11,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255619065] [2020-10-29 14:01:11,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:11,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:11,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:11,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:11,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:11,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:15,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:16,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:16,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 14:01:16,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:01:16,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 14:01:16,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:16,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:16,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:01:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:01:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 14:01:16,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:16,883 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 14:01:16,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:16,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:16,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:16,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:16,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:16,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:01:16,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:16,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:16,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:16,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:16,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:16,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:16,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:16,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255619065] [2020-10-29 14:01:16,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:16,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:01:16,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078852726] [2020-10-29 14:01:16,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:01:16,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:16,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:01:16,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:16,914 INFO L87 Difference]: Start difference. First operand 40034 states and 59043 transitions. Second operand 5 states. [2020-10-29 14:01:19,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:19,837 INFO L93 Difference]: Finished difference Result 64632 states and 95460 transitions. [2020-10-29 14:01:19,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:01:19,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-29 14:01:19,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:19,878 INFO L225 Difference]: With dead ends: 64632 [2020-10-29 14:01:19,878 INFO L226 Difference]: Without dead ends: 25237 [2020-10-29 14:01:19,920 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 [2020-10-29 14:01:19,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25237 states. [2020-10-29 14:01:22,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25237 to 25237. [2020-10-29 14:01:22,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25237 states. [2020-10-29 14:01:22,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25237 states to 25237 states and 37181 transitions. [2020-10-29 14:01:22,164 INFO L78 Accepts]: Start accepts. Automaton has 25237 states and 37181 transitions. Word has length 78 [2020-10-29 14:01:22,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:22,164 INFO L481 AbstractCegarLoop]: Abstraction has 25237 states and 37181 transitions. [2020-10-29 14:01:22,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:01:22,164 INFO L276 IsEmpty]: Start isEmpty. Operand 25237 states and 37181 transitions. [2020-10-29 14:01:22,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 14:01:22,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:22,183 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] [2020-10-29 14:01:22,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 14:01:22,183 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:22,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:22,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1127866419, now seen corresponding path program 1 times [2020-10-29 14:01:22,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:22,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454554583] [2020-10-29 14:01:22,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:22,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:22,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:22,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:22,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:22,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:22,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:23,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:26,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:27,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:27,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 14:01:27,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:01:27,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 14:01:27,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:27,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:27,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:01:27,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:01:27,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 14:01:27,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:27,582 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 14:01:27,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:27,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:27,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:27,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:27,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:27,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:01:27,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:27,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:27,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:27,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:27,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:27,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:27,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:27,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454554583] [2020-10-29 14:01:27,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:27,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:01:27,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632772546] [2020-10-29 14:01:27,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:01:27,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:27,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:01:27,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:27,615 INFO L87 Difference]: Start difference. First operand 25237 states and 37181 transitions. Second operand 5 states. [2020-10-29 14:01:27,991 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-29 14:01:31,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:31,544 INFO L93 Difference]: Finished difference Result 45436 states and 66638 transitions. [2020-10-29 14:01:31,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:01:31,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-29 14:01:31,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:31,583 INFO L225 Difference]: With dead ends: 45436 [2020-10-29 14:01:31,584 INFO L226 Difference]: Without dead ends: 29011 [2020-10-29 14:01:31,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:01:31,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29011 states. [2020-10-29 14:01:34,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29011 to 29008. [2020-10-29 14:01:34,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29008 states. [2020-10-29 14:01:34,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29008 states to 29008 states and 42016 transitions. [2020-10-29 14:01:34,149 INFO L78 Accepts]: Start accepts. Automaton has 29008 states and 42016 transitions. Word has length 78 [2020-10-29 14:01:34,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:34,149 INFO L481 AbstractCegarLoop]: Abstraction has 29008 states and 42016 transitions. [2020-10-29 14:01:34,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:01:34,150 INFO L276 IsEmpty]: Start isEmpty. Operand 29008 states and 42016 transitions. [2020-10-29 14:01:34,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 14:01:34,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:34,164 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] [2020-10-29 14:01:34,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 14:01:34,164 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:34,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:34,165 INFO L82 PathProgramCache]: Analyzing trace with hash 545851375, now seen corresponding path program 1 times [2020-10-29 14:01:34,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:34,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111910522] [2020-10-29 14:01:34,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:34,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:34,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:34,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:34,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:34,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:38,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:39,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:39,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 14:01:39,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:01:39,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 14:01:39,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:39,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:39,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:01:39,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 14:01:39,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 14:01:39,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:39,622 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 14:01:39,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:39,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:39,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:39,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:39,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:39,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:01:39,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:39,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:39,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:39,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:39,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:39,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:39,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:39,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111910522] [2020-10-29 14:01:39,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:39,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:01:39,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345558586] [2020-10-29 14:01:39,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:01:39,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:39,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:01:39,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:01:39,661 INFO L87 Difference]: Start difference. First operand 29008 states and 42016 transitions. Second operand 6 states. [2020-10-29 14:01:40,042 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 14:01:42,800 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-29 14:01:43,191 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-29 14:01:44,763 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 14:01:45,505 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-29 14:01:51,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:51,714 INFO L93 Difference]: Finished difference Result 130222 states and 196530 transitions. [2020-10-29 14:01:51,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 14:01:51,714 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-29 14:01:51,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:51,892 INFO L225 Difference]: With dead ends: 130222 [2020-10-29 14:01:51,892 INFO L226 Difference]: Without dead ends: 106651 [2020-10-29 14:01:51,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-29 14:01:52,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106651 states. [2020-10-29 14:01:57,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106651 to 52018. [2020-10-29 14:01:57,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52018 states. [2020-10-29 14:01:57,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52018 states to 52018 states and 76452 transitions. [2020-10-29 14:01:57,801 INFO L78 Accepts]: Start accepts. Automaton has 52018 states and 76452 transitions. Word has length 78 [2020-10-29 14:01:57,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:57,802 INFO L481 AbstractCegarLoop]: Abstraction has 52018 states and 76452 transitions. [2020-10-29 14:01:57,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:01:57,802 INFO L276 IsEmpty]: Start isEmpty. Operand 52018 states and 76452 transitions. [2020-10-29 14:01:57,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 14:01:57,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:57,823 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] [2020-10-29 14:01:57,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 14:01:57,824 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:57,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:57,824 INFO L82 PathProgramCache]: Analyzing trace with hash 2126226500, now seen corresponding path program 1 times [2020-10-29 14:01:57,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:57,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586312837] [2020-10-29 14:01:57,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:57,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:57,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:57,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:57,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:57,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:02,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:02,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:02,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:02,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 14:02:02,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:02:02,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 14:02:02,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:02,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:02,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:02:02,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 14:02:02,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 14:02:02,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:03,332 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 14:02:03,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:03,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:03,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:03,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:03,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:03,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:02:03,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:03,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:03,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:03,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:03,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:03,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:03,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:03,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586312837] [2020-10-29 14:02:03,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:03,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:02:03,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884571762] [2020-10-29 14:02:03,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:02:03,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:03,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:02:03,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:03,372 INFO L87 Difference]: Start difference. First operand 52018 states and 76452 transitions. Second operand 5 states. [2020-10-29 14:02:03,746 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-29 14:02:07,156 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-29 14:02:17,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:17,923 INFO L93 Difference]: Finished difference Result 174091 states and 261078 transitions. [2020-10-29 14:02:17,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:02:17,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-29 14:02:17,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:18,179 INFO L225 Difference]: With dead ends: 174091 [2020-10-29 14:02:18,179 INFO L226 Difference]: Without dead ends: 127832 [2020-10-29 14:02:18,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:02:18,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127832 states. [2020-10-29 14:02:28,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127832 to 89694. [2020-10-29 14:02:28,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89694 states. [2020-10-29 14:02:28,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89694 states to 89694 states and 132532 transitions. [2020-10-29 14:02:28,535 INFO L78 Accepts]: Start accepts. Automaton has 89694 states and 132532 transitions. Word has length 79 [2020-10-29 14:02:28,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:28,536 INFO L481 AbstractCegarLoop]: Abstraction has 89694 states and 132532 transitions. [2020-10-29 14:02:28,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:02:28,536 INFO L276 IsEmpty]: Start isEmpty. Operand 89694 states and 132532 transitions. [2020-10-29 14:02:28,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 14:02:28,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:28,577 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] [2020-10-29 14:02:28,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 14:02:28,577 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:28,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:28,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1630757433, now seen corresponding path program 1 times [2020-10-29 14:02:28,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:28,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825739954] [2020-10-29 14:02:28,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:28,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:28,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:28,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:28,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:28,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:28,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:33,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:33,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 14:02:33,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:02:33,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 14:02:33,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:33,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:33,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:02:33,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 14:02:33,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 14:02:33,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:33,995 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 14:02:33,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:34,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:34,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:34,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:34,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:34,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:02:34,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:34,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:34,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:34,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:34,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:34,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:34,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825739954] [2020-10-29 14:02:34,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:34,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:02:34,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618436421] [2020-10-29 14:02:34,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:02:34,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:34,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:02:34,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:34,039 INFO L87 Difference]: Start difference. First operand 89694 states and 132532 transitions. Second operand 5 states. [2020-10-29 14:02:34,447 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-29 14:02:37,216 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-29 14:02:51,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:51,108 INFO L93 Difference]: Finished difference Result 222063 states and 330514 transitions. [2020-10-29 14:02:51,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:02:51,109 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-29 14:02:51,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:51,378 INFO L225 Difference]: With dead ends: 222063 [2020-10-29 14:02:51,378 INFO L226 Difference]: Without dead ends: 141792 [2020-10-29 14:02:51,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:02:51,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141792 states. [2020-10-29 14:03:07,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141792 to 141786. [2020-10-29 14:03:07,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141786 states. [2020-10-29 14:03:07,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141786 states to 141786 states and 206668 transitions. [2020-10-29 14:03:07,588 INFO L78 Accepts]: Start accepts. Automaton has 141786 states and 206668 transitions. Word has length 79 [2020-10-29 14:03:07,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:07,588 INFO L481 AbstractCegarLoop]: Abstraction has 141786 states and 206668 transitions. [2020-10-29 14:03:07,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:03:07,588 INFO L276 IsEmpty]: Start isEmpty. Operand 141786 states and 206668 transitions. [2020-10-29 14:03:07,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 14:03:07,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:07,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:07,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 14:03:07,618 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:07,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:07,618 INFO L82 PathProgramCache]: Analyzing trace with hash 807436011, now seen corresponding path program 1 times [2020-10-29 14:03:07,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:07,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807211551] [2020-10-29 14:03:07,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:07,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:07,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:07,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:07,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:08,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:08,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:08,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:08,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:12,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:12,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 14:03:12,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:03:12,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 14:03:12,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:12,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:12,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:03:12,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:03:12,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 14:03:12,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:13,069 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 14:03:13,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:13,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:13,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:13,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:13,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:13,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 14:03:13,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:13,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:13,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:03:13,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:13,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:03:13,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:13,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:13,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807211551] [2020-10-29 14:03:13,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:13,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 14:03:13,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773476545] [2020-10-29 14:03:13,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 14:03:13,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:13,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 14:03:13,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:03:13,129 INFO L87 Difference]: Start difference. First operand 141786 states and 206668 transitions. Second operand 8 states. [2020-10-29 14:03:13,540 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 202