/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/eca-rers2012/Problem17_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:11:01,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:11:01,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:11:01,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:11:01,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:11:01,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:11:01,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:11:01,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:11:01,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:11:01,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:11:01,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:11:01,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:11:01,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:11:01,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:11:01,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:11:01,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:11:01,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:11:01,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:11:01,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:11:01,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:11:01,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:11:01,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:11:01,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:11:01,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:11:01,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:11:01,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:11:01,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:11:01,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:11:01,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:11:01,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-29 08:11:01,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:11:01,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:11:01,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:11:01,221 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 08:11:01,248 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:11:01,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:11:01,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:11:01,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:11:01,250 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:11:01,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:11:01,251 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:11:01,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:11:01,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:11:01,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:11:01,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:11:01,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:11:01,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:11:01,252 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:11:01,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:11:01,253 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:11:01,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:11:01,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:11:01,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:11:01,253 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:11:01,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:11:01,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:11:01,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:11:01,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:11:01,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:11:01,255 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:11:01,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:11:01,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:11:01,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:11:01,255 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:11:01,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:11:01,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:11:01,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:11:01,685 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:11:01,686 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:11:01,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label06.c [2020-10-29 08:11:01,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/260711507/f19585b9b98343fdad0aca0cfcb5e149/FLAG3eeab5d44 [2020-10-29 08:11:02,799 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:11:02,800 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label06.c [2020-10-29 08:11:02,832 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/260711507/f19585b9b98343fdad0aca0cfcb5e149/FLAG3eeab5d44 [2020-10-29 08:11:02,879 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/260711507/f19585b9b98343fdad0aca0cfcb5e149 [2020-10-29 08:11:02,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:11:02,891 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:11:02,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:11:02,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:11:02,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:11:02,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:11:02" (1/1) ... [2020-10-29 08:11:02,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51464909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:11:02, skipping insertion in model container [2020-10-29 08:11:02,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:11:02" (1/1) ... [2020-10-29 08:11:02,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:11:03,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:11:04,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:11:04,360 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:11:04,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:11:04,933 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:11:04,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:11:04 WrapperNode [2020-10-29 08:11:04,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:11:04,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:11:04,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:11:04,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:11:04,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:11:04" (1/1) ... [2020-10-29 08:11:04,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:11:04" (1/1) ... [2020-10-29 08:11:05,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:11:04" (1/1) ... [2020-10-29 08:11:05,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:11:04" (1/1) ... [2020-10-29 08:11:05,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:11:04" (1/1) ... [2020-10-29 08:11:05,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:11:04" (1/1) ... [2020-10-29 08:11:05,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:11:04" (1/1) ... [2020-10-29 08:11:05,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:11:05,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:11:05,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:11:05,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:11:05,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:11:04" (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 08:11:05,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:11:05,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:11:05,278 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:11:05,278 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:11:05,278 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:11:05,279 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:11:05,279 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:11:05,279 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:11:05,279 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:11:05,279 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:11:05,280 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:11:05,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:11:05,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:11:05,281 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:11:05,281 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:11:05,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:11:05,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:11:05,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:11:05,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:11:05,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:11:05,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:11:14,739 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:11:14,739 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:11:14,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:11:14 BoogieIcfgContainer [2020-10-29 08:11:14,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:11:14,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:11:14,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:11:14,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:11:14,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:11:02" (1/3) ... [2020-10-29 08:11:14,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e09eaa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:11:14, skipping insertion in model container [2020-10-29 08:11:14,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:11:04" (2/3) ... [2020-10-29 08:11:14,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e09eaa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:11:14, skipping insertion in model container [2020-10-29 08:11:14,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:11:14" (3/3) ... [2020-10-29 08:11:14,755 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label06.c [2020-10-29 08:11:14,767 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:11:14,773 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:11:14,787 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:11:14,824 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:11:14,824 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:11:14,824 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:11:14,824 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:11:14,824 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:11:14,824 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:11:14,825 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:11:14,825 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:11:14,855 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:11:14,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 08:11:14,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:11:14,863 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] [2020-10-29 08:11:14,864 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:11:14,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:11:14,870 INFO L82 PathProgramCache]: Analyzing trace with hash -649912998, now seen corresponding path program 1 times [2020-10-29 08:11:14,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:11:14,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003776760] [2020-10-29 08:11:14,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:11:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:15,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:15,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:15,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 08:11:15,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:15,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-10-29 08:11:15,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:15,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:11:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:11:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 08:11:15,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:11:15,814 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:11:15,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:11:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:15,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:15,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:15,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:11:15,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:15,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 08:11:15,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:15,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:15,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:11:15,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:15,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:11:15,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:11:15,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:11:15,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003776760] [2020-10-29 08:11:15,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:11:15,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:11:15,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748972433] [2020-10-29 08:11:15,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:11:15,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:11:15,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:11:15,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:11:15,902 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-29 08:11:16,106 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:11:30,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:11:30,188 INFO L93 Difference]: Finished difference Result 1697 states and 3097 transitions. [2020-10-29 08:11:30,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:11:30,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-29 08:11:30,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:11:30,217 INFO L225 Difference]: With dead ends: 1697 [2020-10-29 08:11:30,217 INFO L226 Difference]: Without dead ends: 1013 [2020-10-29 08:11:30,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:11:30,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-10-29 08:11:30,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1003. [2020-10-29 08:11:30,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-29 08:11:30,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1543 transitions. [2020-10-29 08:11:30,393 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1543 transitions. Word has length 38 [2020-10-29 08:11:30,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:11:30,394 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1543 transitions. [2020-10-29 08:11:30,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:11:30,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1543 transitions. [2020-10-29 08:11:30,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 08:11:30,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:11:30,405 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:11:30,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:11:30,406 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:11:30,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:11:30,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1440451034, now seen corresponding path program 1 times [2020-10-29 08:11:30,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:11:30,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780217469] [2020-10-29 08:11:30,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:11:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:30,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:30,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:31,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:31,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:31,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 08:11:31,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:11:31,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1496 [2020-10-29 08:11:31,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:31,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:31,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:11:31,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:11:31,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 08:11:31,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:11:32,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:11:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:32,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:32,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:32,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:11:32,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:32,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:11:32,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:32,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:32,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:11:32,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:32,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:11:32,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:11:32,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:11:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:32,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:32,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:32,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:32,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:11:32,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:11:32,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-29 08:11:32,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:32,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:32,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:11:32,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:11:32,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:11:32,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:11:32,612 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 08:11:32,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780217469] [2020-10-29 08:11:32,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:11:32,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:11:32,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436889028] [2020-10-29 08:11:32,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:11:32,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:11:32,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:11:32,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:11:32,621 INFO L87 Difference]: Start difference. First operand 1003 states and 1543 transitions. Second operand 6 states. [2020-10-29 08:11:51,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:11:51,722 INFO L93 Difference]: Finished difference Result 2461 states and 3673 transitions. [2020-10-29 08:11:51,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 08:11:51,723 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2020-10-29 08:11:51,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:11:51,733 INFO L225 Difference]: With dead ends: 2461 [2020-10-29 08:11:51,733 INFO L226 Difference]: Without dead ends: 1464 [2020-10-29 08:11:51,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:11:51,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2020-10-29 08:11:51,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1464. [2020-10-29 08:11:51,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1464 states. [2020-10-29 08:11:51,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 2036 transitions. [2020-10-29 08:11:51,804 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 2036 transitions. Word has length 109 [2020-10-29 08:11:51,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:11:51,805 INFO L481 AbstractCegarLoop]: Abstraction has 1464 states and 2036 transitions. [2020-10-29 08:11:51,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:11:51,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 2036 transitions. [2020-10-29 08:11:51,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 08:11:51,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:11:51,808 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:11:51,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:11:51,808 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:11:51,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:11:51,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1209795929, now seen corresponding path program 1 times [2020-10-29 08:11:51,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:11:51,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579176259] [2020-10-29 08:11:51,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:11:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:51,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:52,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:52,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:52,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 08:11:52,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:11:52,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 897 [2020-10-29 08:11:52,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:52,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:52,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:11:52,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:11:52,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 08:11:52,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:52,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:11:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:52,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:52,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:52,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:11:52,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:52,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:11:52,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:52,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:52,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:11:52,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:11:52,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:11:52,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:11:53,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:11:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:11:53,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:11:53,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:11:53,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:11:53,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:11:53,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-29 08:11:53,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:11:53,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:11:53,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:11:53,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:11:53,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 08:11:53,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:11:53,876 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:11:53,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579176259] [2020-10-29 08:11:53,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:11:53,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:11:53,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196662416] [2020-10-29 08:11:53,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:11:53,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:11:53,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:11:53,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:11:53,879 INFO L87 Difference]: Start difference. First operand 1464 states and 2036 transitions. Second operand 8 states. [2020-10-29 08:11:54,791 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2020-10-29 08:11:55,364 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2020-10-29 08:12:13,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:12:13,324 INFO L93 Difference]: Finished difference Result 2572 states and 3705 transitions. [2020-10-29 08:12:13,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:12:13,326 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-10-29 08:12:13,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:12:13,335 INFO L225 Difference]: With dead ends: 2572 [2020-10-29 08:12:13,335 INFO L226 Difference]: Without dead ends: 1513 [2020-10-29 08:12:13,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:12:13,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2020-10-29 08:12:13,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1463. [2020-10-29 08:12:13,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1463 states. [2020-10-29 08:12:13,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 2019 transitions. [2020-10-29 08:12:13,396 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 2019 transitions. Word has length 112 [2020-10-29 08:12:13,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:12:13,396 INFO L481 AbstractCegarLoop]: Abstraction has 1463 states and 2019 transitions. [2020-10-29 08:12:13,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:12:13,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 2019 transitions. [2020-10-29 08:12:13,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-29 08:12:13,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:12:13,399 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:13,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:12:13,400 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:12:13,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:12:13,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1284930758, now seen corresponding path program 1 times [2020-10-29 08:12:13,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:12:13,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114983294] [2020-10-29 08:12:13,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:12:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:13,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:13,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:13,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 08:12:13,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:13,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-29 08:12:13,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:13,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:13,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:12:13,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:12:13,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 08:12:13,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:13,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:12:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:13,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:13,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:13,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:12:13,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:13,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:12:13,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:13,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:13,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:12:13,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:13,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:12:13,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:13,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:12:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:13,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:14,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:14,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:12:14,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:14,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 08:12:14,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:14,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:14,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:12:14,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:14,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:12:14,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 08:12:14,125 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:12:14,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114983294] [2020-10-29 08:12:14,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:12:14,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:12:14,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18066517] [2020-10-29 08:12:14,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:12:14,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:12:14,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:12:14,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:12:14,139 INFO L87 Difference]: Start difference. First operand 1463 states and 2019 transitions. Second operand 5 states. [2020-10-29 08:12:29,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:12:29,627 INFO L93 Difference]: Finished difference Result 3397 states and 5049 transitions. [2020-10-29 08:12:29,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:12:29,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-29 08:12:29,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:12:29,645 INFO L225 Difference]: With dead ends: 3397 [2020-10-29 08:12:29,645 INFO L226 Difference]: Without dead ends: 2373 [2020-10-29 08:12:29,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:12:29,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2020-10-29 08:12:29,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2370. [2020-10-29 08:12:29,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2370 states. [2020-10-29 08:12:29,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 3230 transitions. [2020-10-29 08:12:29,725 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 3230 transitions. Word has length 125 [2020-10-29 08:12:29,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:12:29,726 INFO L481 AbstractCegarLoop]: Abstraction has 2370 states and 3230 transitions. [2020-10-29 08:12:29,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:12:29,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 3230 transitions. [2020-10-29 08:12:29,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-29 08:12:29,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:12:29,730 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 08:12:29,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:12:29,731 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:12:29,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:12:29,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1884305414, now seen corresponding path program 1 times [2020-10-29 08:12:29,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:12:29,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729241685] [2020-10-29 08:12:29,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:12:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:29,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:30,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:30,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:30,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-29 08:12:30,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:12:30,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1168 [2020-10-29 08:12:30,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:30,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:30,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:12:30,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:12:30,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 08:12:30,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:31,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:12:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:31,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:31,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:31,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:12:31,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:31,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:12:31,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:31,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:31,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:12:31,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:31,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:12:31,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:31,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:12:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:31,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:31,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:31,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:12:31,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:31,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 08:12:31,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:31,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:31,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:12:31,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:31,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:12:31,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:12:31,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:12:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:31,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:31,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:31,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:12:31,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:31,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 08:12:31,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:31,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:31,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:12:31,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:12:31,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:12:31,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 08:12:31,567 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:12:31,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729241685] [2020-10-29 08:12:31,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:12:31,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:12:31,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538605106] [2020-10-29 08:12:31,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:12:31,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:12:31,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:12:31,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:12:31,571 INFO L87 Difference]: Start difference. First operand 2370 states and 3230 transitions. Second operand 7 states. [2020-10-29 08:12:54,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:12:54,249 INFO L93 Difference]: Finished difference Result 5365 states and 7978 transitions. [2020-10-29 08:12:54,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:12:54,251 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2020-10-29 08:12:54,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:12:54,274 INFO L225 Difference]: With dead ends: 5365 [2020-10-29 08:12:54,274 INFO L226 Difference]: Without dead ends: 3434 [2020-10-29 08:12:54,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:12:54,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2020-10-29 08:12:54,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3324. [2020-10-29 08:12:54,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3324 states. [2020-10-29 08:12:54,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3324 states to 3324 states and 4474 transitions. [2020-10-29 08:12:54,409 INFO L78 Accepts]: Start accepts. Automaton has 3324 states and 4474 transitions. Word has length 196 [2020-10-29 08:12:54,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:12:54,410 INFO L481 AbstractCegarLoop]: Abstraction has 3324 states and 4474 transitions. [2020-10-29 08:12:54,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:12:54,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3324 states and 4474 transitions. [2020-10-29 08:12:54,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-29 08:12:54,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:12:54,414 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 08:12:54,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:12:54,414 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:12:54,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:12:54,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1971511090, now seen corresponding path program 1 times [2020-10-29 08:12:54,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:12:54,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831916077] [2020-10-29 08:12:54,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:12:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:54,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:54,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:56,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:58,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:58,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-29 08:12:58,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:12:58,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3894 [2020-10-29 08:12:58,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:58,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:58,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:12:58,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:12:58,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 08:12:58,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:58,612 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:12:58,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:12:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:58,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:58,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:58,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:12:58,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:58,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 08:12:58,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:58,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:58,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:12:58,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:12:58,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:12:58,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:58,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:12:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:58,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:58,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:58,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:12:58,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:58,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-29 08:12:58,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:58,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:12:58,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:12:58,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:12:58,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:12:59,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:12:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:12:59,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:12:59,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:12:59,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:12:59,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:12:59,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-29 08:12:59,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:12:59,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:12:59,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:12:59,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:12:59,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:12:59,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:12:59,543 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 61 proven. 73 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:12:59,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831916077] [2020-10-29 08:12:59,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:12:59,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:12:59,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617585357] [2020-10-29 08:12:59,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:12:59,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:12:59,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:12:59,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:12:59,551 INFO L87 Difference]: Start difference. First operand 3324 states and 4474 transitions. Second operand 10 states. [2020-10-29 08:12:59,764 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-10-29 08:13:00,629 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-10-29 08:13:04,684 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-10-29 08:13:10,697 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-10-29 08:13:26,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:13:26,255 INFO L93 Difference]: Finished difference Result 7486 states and 10555 transitions. [2020-10-29 08:13:26,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 08:13:26,258 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 200 [2020-10-29 08:13:26,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:13:26,288 INFO L225 Difference]: With dead ends: 7486 [2020-10-29 08:13:26,288 INFO L226 Difference]: Without dead ends: 4601 [2020-10-29 08:13:26,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=185, Invalid=627, Unknown=0, NotChecked=0, Total=812 [2020-10-29 08:13:26,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-10-29 08:13:26,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 4319. [2020-10-29 08:13:26,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4319 states. [2020-10-29 08:13:26,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4319 states to 4319 states and 5630 transitions. [2020-10-29 08:13:26,451 INFO L78 Accepts]: Start accepts. Automaton has 4319 states and 5630 transitions. Word has length 200 [2020-10-29 08:13:26,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:13:26,452 INFO L481 AbstractCegarLoop]: Abstraction has 4319 states and 5630 transitions. [2020-10-29 08:13:26,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:13:26,452 INFO L276 IsEmpty]: Start isEmpty. Operand 4319 states and 5630 transitions. [2020-10-29 08:13:26,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-29 08:13:26,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:13:26,456 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:13:26,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:13:26,456 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:13:26,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:13:26,457 INFO L82 PathProgramCache]: Analyzing trace with hash -217002264, now seen corresponding path program 1 times [2020-10-29 08:13:26,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:13:26,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248260323] [2020-10-29 08:13:26,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:13:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:26,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:26,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:26,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:31,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:31,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-29 08:13:31,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:13:31,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 08:13:31,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:31,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:31,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:13:31,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:13:31,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 08:13:31,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:31,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:13:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:31,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:31,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:31,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:13:31,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:31,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:13:31,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:31,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:13:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:13:31,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:31,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:13:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:31,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:31,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:31,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:13:31,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:31,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 08:13:31,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:31,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:31,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:13:31,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:31,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:13:31,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:31,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:13:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:31,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:31,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:32,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:32,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:13:32,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:13:32,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-29 08:13:32,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:32,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:32,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:13:32,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:32,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:13:32,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:32,246 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:13:32,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248260323] [2020-10-29 08:13:32,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:13:32,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:13:32,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622946315] [2020-10-29 08:13:32,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:13:32,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:13:32,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:13:32,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:13:32,249 INFO L87 Difference]: Start difference. First operand 4319 states and 5630 transitions. Second operand 5 states. [2020-10-29 08:13:32,932 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:13:50,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:13:50,860 INFO L93 Difference]: Finished difference Result 8645 states and 11746 transitions. [2020-10-29 08:13:50,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:13:50,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2020-10-29 08:13:50,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:13:50,884 INFO L225 Difference]: With dead ends: 8645 [2020-10-29 08:13:50,885 INFO L226 Difference]: Without dead ends: 4769 [2020-10-29 08:13:50,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:13:50,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4769 states. [2020-10-29 08:13:51,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4769 to 4319. [2020-10-29 08:13:51,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4319 states. [2020-10-29 08:13:51,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4319 states to 4319 states and 5630 transitions. [2020-10-29 08:13:51,030 INFO L78 Accepts]: Start accepts. Automaton has 4319 states and 5630 transitions. Word has length 211 [2020-10-29 08:13:51,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:13:51,030 INFO L481 AbstractCegarLoop]: Abstraction has 4319 states and 5630 transitions. [2020-10-29 08:13:51,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:13:51,031 INFO L276 IsEmpty]: Start isEmpty. Operand 4319 states and 5630 transitions. [2020-10-29 08:13:51,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-29 08:13:51,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:13:51,036 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:51,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:13:51,037 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:13:51,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:13:51,037 INFO L82 PathProgramCache]: Analyzing trace with hash 2094957209, now seen corresponding path program 1 times [2020-10-29 08:13:51,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:13:51,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765568826] [2020-10-29 08:13:51,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:13:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:51,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:51,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:52,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:53,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:53,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:56,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:56,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 08:13:56,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:13:56,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 08:13:56,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:56,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:56,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:13:56,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:13:56,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-29 08:13:56,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:56,263 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:13:56,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:13:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:56,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:56,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:56,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:13:56,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:56,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:13:56,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:56,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:56,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:13:56,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:13:56,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:13:56,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:56,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:13:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:56,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:56,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:56,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:56,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:13:56,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:13:56,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-29 08:13:56,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:56,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:56,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:13:56,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:13:56,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 08:13:56,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:56,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 08:13:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:13:56,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:13:57,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:13:57,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:13:57,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:13:57,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-29 08:13:57,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:13:57,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:13:57,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:13:57,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:13:57,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:13:57,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:13:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-29 08:13:57,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765568826] [2020-10-29 08:13:57,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:13:57,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:13:57,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505163847] [2020-10-29 08:13:57,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:13:57,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:13:57,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:13:57,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:13:57,304 INFO L87 Difference]: Start difference. First operand 4319 states and 5630 transitions. Second operand 7 states. [2020-10-29 08:13:57,485 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:14:03,408 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:14:21,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:14:21,334 INFO L93 Difference]: Finished difference Result 9746 states and 13306 transitions. [2020-10-29 08:14:21,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:14:21,338 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2020-10-29 08:14:21,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:14:21,377 INFO L225 Difference]: With dead ends: 9746 [2020-10-29 08:14:21,377 INFO L226 Difference]: Without dead ends: 5868 [2020-10-29 08:14:21,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:14:21,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5868 states. [2020-10-29 08:14:21,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5868 to 5291. [2020-10-29 08:14:21,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5291 states. [2020-10-29 08:14:21,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5291 states to 5291 states and 6600 transitions. [2020-10-29 08:14:21,631 INFO L78 Accepts]: Start accepts. Automaton has 5291 states and 6600 transitions. Word has length 224 [2020-10-29 08:14:21,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:14:21,632 INFO L481 AbstractCegarLoop]: Abstraction has 5291 states and 6600 transitions. [2020-10-29 08:14:21,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:14:21,632 INFO L276 IsEmpty]: Start isEmpty. Operand 5291 states and 6600 transitions. [2020-10-29 08:14:21,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-29 08:14:21,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:14:21,644 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:14:21,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:14:21,644 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:14:21,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:14:21,645 INFO L82 PathProgramCache]: Analyzing trace with hash 35673869, now seen corresponding path program 1 times [2020-10-29 08:14:21,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:14:21,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258286859] [2020-10-29 08:14:21,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:14:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:21,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:21,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:22,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:26,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:26,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:26,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-29 08:14:26,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:14:26,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-29 08:14:26,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:26,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:26,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:14:26,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:14:26,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-29 08:14:26,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:26,992 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:14:26,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:14:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:27,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:27,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:27,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:14:27,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:27,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:14:27,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:27,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:27,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:14:27,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:27,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:14:27,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:27,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:14:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:27,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:27,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:27,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:14:27,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:27,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-29 08:14:27,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:27,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:14:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:14:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:14:27,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:14:27,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:14:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:27,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:27,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:27,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 08:14:27,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:27,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 08:14:27,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:27,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:27,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:14:27,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:14:27,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 08:14:27,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:27,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-29 08:14:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:27,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:27,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:27,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:14:27,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:27,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 08:14:27,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:27,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:27,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:14:27,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 08:14:27,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:14:27,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:14:27,924 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 95 proven. 145 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-29 08:14:27,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258286859] [2020-10-29 08:14:27,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:14:27,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:14:27,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935092026] [2020-10-29 08:14:27,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 08:14:27,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:14:27,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 08:14:27,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 08:14:27,927 INFO L87 Difference]: Start difference. First operand 5291 states and 6600 transitions. Second operand 9 states. [2020-10-29 08:14:28,212 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-29 08:14:29,202 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:14:36,826 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 68