/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/Problem03_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:00:25,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:00:25,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:00:26,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:00:26,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:00:26,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:00:26,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:00:26,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:00:26,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:00:26,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:00:26,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:00:26,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:00:26,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:00:26,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:00:26,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:00:26,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:00:26,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:00:26,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:00:26,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:00:26,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:00:26,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:00:26,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:00:26,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:00:26,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:00:26,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:00:26,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:00:26,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:00:26,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:00:26,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:00:26,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-29 05:00:26,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:00:26,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:00:26,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:00:26,093 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 05:00:26,147 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:00:26,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:00:26,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:00:26,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:00:26,152 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:00:26,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:00:26,152 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:00:26,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:00:26,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:00:26,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:00:26,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:00:26,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:00:26,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:00:26,156 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:00:26,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:00:26,156 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:00:26,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:00:26,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:00:26,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:00:26,157 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:00:26,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:00:26,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:00:26,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:00:26,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:00:26,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:00:26,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:00:26,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:00:26,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:00:26,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:00:26,160 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:00:26,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:00:26,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:00:26,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:00:26,646 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:00:26,646 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:00:26,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label49.c [2020-10-29 05:00:26,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce8e35aad/b1b52960a8cc48148d3b07727fa8c23d/FLAGa28ea6934 [2020-10-29 05:00:27,643 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:00:27,644 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label49.c [2020-10-29 05:00:27,662 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce8e35aad/b1b52960a8cc48148d3b07727fa8c23d/FLAGa28ea6934 [2020-10-29 05:00:27,762 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce8e35aad/b1b52960a8cc48148d3b07727fa8c23d [2020-10-29 05:00:27,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:00:27,776 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:00:27,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:00:27,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:00:27,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:00:27,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:00:27" (1/1) ... [2020-10-29 05:00:27,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f3ff60b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:27, skipping insertion in model container [2020-10-29 05:00:27,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:00:27" (1/1) ... [2020-10-29 05:00:27,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:00:27,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:00:28,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:00:28,681 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:00:29,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:00:29,034 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:00:29,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:29 WrapperNode [2020-10-29 05:00:29,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:00:29,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:00:29,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:00:29,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:00:29,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:29" (1/1) ... [2020-10-29 05:00:29,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:29" (1/1) ... [2020-10-29 05:00:29,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:29" (1/1) ... [2020-10-29 05:00:29,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:29" (1/1) ... [2020-10-29 05:00:29,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:29" (1/1) ... [2020-10-29 05:00:29,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:29" (1/1) ... [2020-10-29 05:00:29,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:29" (1/1) ... [2020-10-29 05:00:29,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:00:29,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:00:29,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:00:29,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:00:29,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:29" (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 05:00:29,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:00:29,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:00:29,360 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:00:29,360 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:00:29,360 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:00:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:00:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:00:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:00:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:00:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:00:29,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:00:29,362 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:00:29,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:00:29,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:00:29,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:00:29,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:00:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:00:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:00:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:00:31,506 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:00:31,506 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:00:31,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:00:31 BoogieIcfgContainer [2020-10-29 05:00:31,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:00:31,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:00:31,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:00:31,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:00:31,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:00:27" (1/3) ... [2020-10-29 05:00:31,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1f610a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:00:31, skipping insertion in model container [2020-10-29 05:00:31,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:29" (2/3) ... [2020-10-29 05:00:31,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1f610a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:00:31, skipping insertion in model container [2020-10-29 05:00:31,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:00:31" (3/3) ... [2020-10-29 05:00:31,518 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label49.c [2020-10-29 05:00:31,531 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:00:31,537 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:00:31,551 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:00:31,580 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:00:31,580 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:00:31,581 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:00:31,581 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:00:31,581 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:00:31,581 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:00:31,581 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:00:31,581 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:00:31,650 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 05:00:31,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-29 05:00:31,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:31,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:00:31,670 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:31,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:31,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1371048988, now seen corresponding path program 1 times [2020-10-29 05:00:31,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:31,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5973503] [2020-10-29 05:00:31,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:32,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:33,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:36,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:36,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-29 05:00:36,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:00:36,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4067 [2020-10-29 05:00:36,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:36,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:36,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:00:36,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:00:36,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-29 05:00:36,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 05:00:36,649 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:36,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:36,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:36,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:36,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:36,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:36,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 05:00:36,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:36,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:36,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:36,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:36,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:00:36,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:00:36,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:00:36,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5973503] [2020-10-29 05:00:36,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:00:36,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:00:36,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506108281] [2020-10-29 05:00:36,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:00:36,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:36,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:00:36,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:00:36,850 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-29 05:00:37,099 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:40,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:40,628 INFO L93 Difference]: Finished difference Result 863 states and 1524 transitions. [2020-10-29 05:00:40,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:00:40,630 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2020-10-29 05:00:40,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:40,649 INFO L225 Difference]: With dead ends: 863 [2020-10-29 05:00:40,649 INFO L226 Difference]: Without dead ends: 484 [2020-10-29 05:00:40,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:00:40,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-10-29 05:00:40,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 466. [2020-10-29 05:00:40,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-29 05:00:40,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 744 transitions. [2020-10-29 05:00:40,776 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 744 transitions. Word has length 175 [2020-10-29 05:00:40,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:40,779 INFO L481 AbstractCegarLoop]: Abstraction has 466 states and 744 transitions. [2020-10-29 05:00:40,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:00:40,780 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 744 transitions. [2020-10-29 05:00:40,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-29 05:00:40,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:40,797 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:00:40,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:00:40,798 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:40,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:40,799 INFO L82 PathProgramCache]: Analyzing trace with hash -872186477, now seen corresponding path program 1 times [2020-10-29 05:00:40,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:40,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917215561] [2020-10-29 05:00:40,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:40,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:41,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:43,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:43,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:43,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 05:00:43,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:00:43,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2804 [2020-10-29 05:00:43,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:43,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:43,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:43,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:00:43,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-29 05:00:43,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:00:44,188 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:44,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:44,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:44,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:44,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:44,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:44,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:00:44,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:44,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:44,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:44,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:44,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:44,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:00:44,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:44,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:44,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:44,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:00:44,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:44,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:00:44,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:44,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:44,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:44,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:44,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:00:44,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:00:44,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:00:44,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917215561] [2020-10-29 05:00:44,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:44,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:00:44,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341337030] [2020-10-29 05:00:44,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:00:44,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:44,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:00:44,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:00:44,473 INFO L87 Difference]: Start difference. First operand 466 states and 744 transitions. Second operand 5 states. [2020-10-29 05:00:44,848 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:48,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:48,139 INFO L93 Difference]: Finished difference Result 1353 states and 2191 transitions. [2020-10-29 05:00:48,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:00:48,140 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-29 05:00:48,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:48,148 INFO L225 Difference]: With dead ends: 1353 [2020-10-29 05:00:48,149 INFO L226 Difference]: Without dead ends: 893 [2020-10-29 05:00:48,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:00:48,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-10-29 05:00:48,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 887. [2020-10-29 05:00:48,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 887 states. [2020-10-29 05:00:48,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1253 transitions. [2020-10-29 05:00:48,211 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1253 transitions. Word has length 184 [2020-10-29 05:00:48,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:48,213 INFO L481 AbstractCegarLoop]: Abstraction has 887 states and 1253 transitions. [2020-10-29 05:00:48,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:00:48,213 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1253 transitions. [2020-10-29 05:00:48,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-29 05:00:48,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:48,221 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:00:48,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:00:48,222 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:48,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:48,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1211560279, now seen corresponding path program 1 times [2020-10-29 05:00:48,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:48,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353286625] [2020-10-29 05:00:48,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:48,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:48,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:49,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:52,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:52,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-29 05:00:52,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:00:52,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4273 [2020-10-29 05:00:52,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:52,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 05:00:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-29 05:00:52,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:52,964 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:52,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:52,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:52,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:52,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:52,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:52,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:00:52,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:52,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:52,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:52,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:52,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:52,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:53,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:53,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:53,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:53,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:00:53,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:53,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:00:53,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:53,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:53,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:53,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:53,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 05:00:53,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:00:53,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353286625] [2020-10-29 05:00:53,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:53,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:00:53,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781804579] [2020-10-29 05:00:53,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:00:53,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:53,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:00:53,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:00:53,248 INFO L87 Difference]: Start difference. First operand 887 states and 1253 transitions. Second operand 5 states. [2020-10-29 05:00:53,490 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:00:56,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:56,543 INFO L93 Difference]: Finished difference Result 2621 states and 3769 transitions. [2020-10-29 05:00:56,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:00:56,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-29 05:00:56,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:56,559 INFO L225 Difference]: With dead ends: 2621 [2020-10-29 05:00:56,559 INFO L226 Difference]: Without dead ends: 1740 [2020-10-29 05:00:56,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:00:56,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2020-10-29 05:00:56,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1734. [2020-10-29 05:00:56,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1734 states. [2020-10-29 05:00:56,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 2353 transitions. [2020-10-29 05:00:56,666 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 2353 transitions. Word has length 186 [2020-10-29 05:00:56,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:56,667 INFO L481 AbstractCegarLoop]: Abstraction has 1734 states and 2353 transitions. [2020-10-29 05:00:56,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:00:56,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 2353 transitions. [2020-10-29 05:00:56,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-29 05:00:56,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:56,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:00:56,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:00:56,675 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:56,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:56,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1803453929, now seen corresponding path program 1 times [2020-10-29 05:00:56,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:56,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279308159] [2020-10-29 05:00:56,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:56,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:57,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:58,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:58,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:58,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-29 05:00:58,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:00:58,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2081 [2020-10-29 05:00:58,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:58,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:58,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:58,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 05:00:58,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-29 05:00:58,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:59,226 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:59,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:59,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:59,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:59,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:59,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:59,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:00:59,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:59,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:59,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:59,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:59,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:59,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:00:59,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:59,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:59,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:59,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 05:00:59,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:59,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 05:00:59,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:59,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:59,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:59,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 05:00:59,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:59,592 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:00:59,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279308159] [2020-10-29 05:00:59,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:59,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:00:59,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677845315] [2020-10-29 05:00:59,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:00:59,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:59,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:00:59,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:00:59,606 INFO L87 Difference]: Start difference. First operand 1734 states and 2353 transitions. Second operand 5 states. [2020-10-29 05:00:59,960 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:03,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:03,155 INFO L93 Difference]: Finished difference Result 5143 states and 7148 transitions. [2020-10-29 05:01:03,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:01:03,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2020-10-29 05:01:03,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:03,180 INFO L225 Difference]: With dead ends: 5143 [2020-10-29 05:01:03,180 INFO L226 Difference]: Without dead ends: 3415 [2020-10-29 05:01:03,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:01:03,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3415 states. [2020-10-29 05:01:03,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3415 to 3410. [2020-10-29 05:01:03,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3410 states. [2020-10-29 05:01:03,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3410 states to 3410 states and 4541 transitions. [2020-10-29 05:01:03,334 INFO L78 Accepts]: Start accepts. Automaton has 3410 states and 4541 transitions. Word has length 202 [2020-10-29 05:01:03,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:03,335 INFO L481 AbstractCegarLoop]: Abstraction has 3410 states and 4541 transitions. [2020-10-29 05:01:03,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:01:03,335 INFO L276 IsEmpty]: Start isEmpty. Operand 3410 states and 4541 transitions. [2020-10-29 05:01:03,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-29 05:01:03,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:03,352 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:03,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:01:03,353 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:03,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:03,353 INFO L82 PathProgramCache]: Analyzing trace with hash -149432176, now seen corresponding path program 1 times [2020-10-29 05:01:03,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:03,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729983232] [2020-10-29 05:01:03,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:03,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:03,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:05,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:05,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:05,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-29 05:01:05,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:01:05,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2298 [2020-10-29 05:01:05,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:05,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:05,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:05,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-29 05:01:05,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-29 05:01:05,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:06,031 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:06,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:06,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:06,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:06,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:06,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:06,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:01:06,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:06,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:06,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:06,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:06,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:06,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:06,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:06,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:06,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:06,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 05:01:06,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:06,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 05:01:06,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:06,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:06,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:06,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:06,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 05:01:06,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:01:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:01:06,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729983232] [2020-10-29 05:01:06,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:06,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:01:06,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526231492] [2020-10-29 05:01:06,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:01:06,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:06,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:01:06,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:01:06,327 INFO L87 Difference]: Start difference. First operand 3410 states and 4541 transitions. Second operand 5 states. [2020-10-29 05:01:06,804 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:10,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:10,106 INFO L93 Difference]: Finished difference Result 8493 states and 11728 transitions. [2020-10-29 05:01:10,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:01:10,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-29 05:01:10,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:10,135 INFO L225 Difference]: With dead ends: 8493 [2020-10-29 05:01:10,135 INFO L226 Difference]: Without dead ends: 5089 [2020-10-29 05:01:10,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:01:10,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5089 states. [2020-10-29 05:01:10,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5089 to 5082. [2020-10-29 05:01:10,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5082 states. [2020-10-29 05:01:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5082 states to 5082 states and 6969 transitions. [2020-10-29 05:01:10,335 INFO L78 Accepts]: Start accepts. Automaton has 5082 states and 6969 transitions. Word has length 205 [2020-10-29 05:01:10,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:10,336 INFO L481 AbstractCegarLoop]: Abstraction has 5082 states and 6969 transitions. [2020-10-29 05:01:10,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:01:10,336 INFO L276 IsEmpty]: Start isEmpty. Operand 5082 states and 6969 transitions. [2020-10-29 05:01:10,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-29 05:01:10,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:10,353 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:10,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:01:10,353 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:10,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:10,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1863476981, now seen corresponding path program 1 times [2020-10-29 05:01:10,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:10,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540459592] [2020-10-29 05:01:10,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:10,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:10,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:11,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:12,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:14,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:14,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-29 05:01:14,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:01:14,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3988 [2020-10-29 05:01:14,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:14,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:14,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:01:14,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 05:01:14,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-29 05:01:14,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:14,804 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:14,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:14,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:14,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:14,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:14,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:14,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:01:14,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:14,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:14,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:14,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:14,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:14,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:14,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:14,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:14,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:14,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:01:14,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:14,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:01:14,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:14,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:14,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:14,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:14,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 05:01:14,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:14,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 05:01:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:14,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:15,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:15,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:01:15,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:15,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 05:01:15,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:15,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:15,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:15,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:15,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 05:01:15,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:15,362 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 05:01:15,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540459592] [2020-10-29 05:01:15,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:15,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:01:15,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517509805] [2020-10-29 05:01:15,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:01:15,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:15,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:01:15,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:01:15,364 INFO L87 Difference]: Start difference. First operand 5082 states and 6969 transitions. Second operand 7 states. [2020-10-29 05:01:15,626 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:16,186 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 05:01:20,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:20,779 INFO L93 Difference]: Finished difference Result 18230 states and 26039 transitions. [2020-10-29 05:01:20,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:01:20,780 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2020-10-29 05:01:20,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:20,858 INFO L225 Difference]: With dead ends: 18230 [2020-10-29 05:01:20,858 INFO L226 Difference]: Without dead ends: 13154 [2020-10-29 05:01:20,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:01:20,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13154 states. [2020-10-29 05:01:21,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13154 to 13082. [2020-10-29 05:01:21,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13082 states. [2020-10-29 05:01:21,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13082 states to 13082 states and 18592 transitions. [2020-10-29 05:01:21,408 INFO L78 Accepts]: Start accepts. Automaton has 13082 states and 18592 transitions. Word has length 220 [2020-10-29 05:01:21,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:21,409 INFO L481 AbstractCegarLoop]: Abstraction has 13082 states and 18592 transitions. [2020-10-29 05:01:21,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:01:21,409 INFO L276 IsEmpty]: Start isEmpty. Operand 13082 states and 18592 transitions. [2020-10-29 05:01:21,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-29 05:01:21,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:21,451 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:21,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:01:21,451 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:21,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:21,453 INFO L82 PathProgramCache]: Analyzing trace with hash -373308797, now seen corresponding path program 1 times [2020-10-29 05:01:21,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:21,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986722531] [2020-10-29 05:01:21,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:21,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:21,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:23,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:24,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:26,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:26,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-29 05:01:26,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:01:26,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-29 05:01:26,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:26,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:01:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 05:01:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-29 05:01:26,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:26,901 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:26,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:26,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:26,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:26,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:26,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:26,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 05:01:26,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:26,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:26,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:26,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:26,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:26,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:27,054 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 05:01:27,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:27,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:27,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:27,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 05:01:27,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:27,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 05:01:27,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:27,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:27,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:27,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:27,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 05:01:27,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:01:27,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 05:01:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:27,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:27,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:27,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:01:27,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:27,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 05:01:27,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:27,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:27,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:27,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:27,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 05:01:27,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:01:27,446 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 38 proven. 31 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 05:01:27,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986722531] [2020-10-29 05:01:27,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:27,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:01:27,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370707980] [2020-10-29 05:01:27,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:01:27,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:27,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:01:27,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:01:27,448 INFO L87 Difference]: Start difference. First operand 13082 states and 18592 transitions. Second operand 6 states. [2020-10-29 05:01:27,801 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 05:01:32,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:32,033 INFO L93 Difference]: Finished difference Result 33632 states and 49872 transitions. [2020-10-29 05:01:32,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:01:32,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 232 [2020-10-29 05:01:32,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:32,171 INFO L225 Difference]: With dead ends: 33632 [2020-10-29 05:01:32,171 INFO L226 Difference]: Without dead ends: 20556 [2020-10-29 05:01:32,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:01:32,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20556 states. [2020-10-29 05:01:33,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20556 to 19623. [2020-10-29 05:01:33,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19623 states. [2020-10-29 05:01:33,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19623 states to 19623 states and 28095 transitions. [2020-10-29 05:01:33,124 INFO L78 Accepts]: Start accepts. Automaton has 19623 states and 28095 transitions. Word has length 232 [2020-10-29 05:01:33,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:33,125 INFO L481 AbstractCegarLoop]: Abstraction has 19623 states and 28095 transitions. [2020-10-29 05:01:33,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:01:33,125 INFO L276 IsEmpty]: Start isEmpty. Operand 19623 states and 28095 transitions. [2020-10-29 05:01:33,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-29 05:01:33,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:33,191 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:33,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 05:01:33,191 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:33,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:33,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1826229813, now seen corresponding path program 1 times [2020-10-29 05:01:33,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:33,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794085849] [2020-10-29 05:01:33,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:33,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:33,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:35,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:35,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:38,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:38,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 05:01:38,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:01:38,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 05:01:38,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:38,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:38,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:01:38,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 05:01:38,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-29 05:01:38,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:38,569 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:38,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:38,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:38,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:38,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:38,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:38,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:01:38,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:38,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:38,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:38,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:38,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:38,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:38,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:38,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:38,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:38,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 05:01:38,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:38,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 05:01:38,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:38,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:38,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:38,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:38,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 05:01:38,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:38,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 05:01:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:38,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:38,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:38,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:01:38,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:38,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 05:01:38,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:38,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:38,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:38,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:38,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 05:01:38,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:38,976 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 46 proven. 31 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 05:01:38,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794085849] [2020-10-29 05:01:38,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:38,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:01:38,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217479099] [2020-10-29 05:01:38,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:01:38,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:38,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:01:38,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:01:38,979 INFO L87 Difference]: Start difference. First operand 19623 states and 28095 transitions. Second operand 6 states. [2020-10-29 05:01:39,223 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:01:42,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:42,494 INFO L93 Difference]: Finished difference Result 42773 states and 63792 transitions. [2020-10-29 05:01:42,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:01:42,495 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 236 [2020-10-29 05:01:42,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:42,603 INFO L225 Difference]: With dead ends: 42773 [2020-10-29 05:01:42,604 INFO L226 Difference]: Without dead ends: 23156 [2020-10-29 05:01:42,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:01:42,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23156 states. [2020-10-29 05:01:43,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23156 to 23012. [2020-10-29 05:01:43,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23012 states. [2020-10-29 05:01:43,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23012 states to 23012 states and 32249 transitions. [2020-10-29 05:01:43,703 INFO L78 Accepts]: Start accepts. Automaton has 23012 states and 32249 transitions. Word has length 236 [2020-10-29 05:01:43,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:43,704 INFO L481 AbstractCegarLoop]: Abstraction has 23012 states and 32249 transitions. [2020-10-29 05:01:43,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:01:43,704 INFO L276 IsEmpty]: Start isEmpty. Operand 23012 states and 32249 transitions. [2020-10-29 05:01:43,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-29 05:01:43,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:43,772 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:43,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 05:01:43,772 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:43,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:43,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1883868980, now seen corresponding path program 1 times [2020-10-29 05:01:43,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:43,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023978291] [2020-10-29 05:01:43,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:43,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:44,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:44,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:48,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:48,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-29 05:01:48,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:01:48,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 05:01:48,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:48,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 05:01:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 05:01:48,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:49,148 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:49,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:49,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:49,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:49,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:49,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:49,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:01:49,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:49,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:49,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:49,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:49,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:49,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:49,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:49,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:49,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:49,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:01:49,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:49,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 05:01:49,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:49,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:49,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:49,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:49,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 05:01:49,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:49,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 05:01:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:49,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:49,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:49,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 05:01:49,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:49,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-29 05:01:49,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:49,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:49,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:49,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:49,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 05:01:49,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:49,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-29 05:01:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:49,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:49,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:49,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:01:49,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:49,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 05:01:49,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:49,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:49,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:49,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 05:01:49,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:49,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 153 proven. 33 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 05:01:49,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023978291] [2020-10-29 05:01:49,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:49,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:01:49,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052089614] [2020-10-29 05:01:49,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:01:49,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:49,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:01:49,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:01:49,948 INFO L87 Difference]: Start difference. First operand 23012 states and 32249 transitions. Second operand 7 states. [2020-10-29 05:01:50,381 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:01:50,786 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:01:55,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:55,845 INFO L93 Difference]: Finished difference Result 54448 states and 86732 transitions. [2020-10-29 05:01:55,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:01:55,846 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 315 [2020-10-29 05:01:55,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:56,084 INFO L225 Difference]: With dead ends: 54448 [2020-10-29 05:01:56,085 INFO L226 Difference]: Without dead ends: 31442 [2020-10-29 05:01:56,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:01:56,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31442 states. [2020-10-29 05:01:58,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31442 to 30193. [2020-10-29 05:01:58,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30193 states. [2020-10-29 05:01:58,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30193 states to 30193 states and 40597 transitions. [2020-10-29 05:01:58,085 INFO L78 Accepts]: Start accepts. Automaton has 30193 states and 40597 transitions. Word has length 315 [2020-10-29 05:01:58,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:58,085 INFO L481 AbstractCegarLoop]: Abstraction has 30193 states and 40597 transitions. [2020-10-29 05:01:58,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:01:58,085 INFO L276 IsEmpty]: Start isEmpty. Operand 30193 states and 40597 transitions. [2020-10-29 05:01:58,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-29 05:01:58,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:58,154 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:01:58,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 05:01:58,154 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:58,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:58,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1240608824, now seen corresponding path program 1 times [2020-10-29 05:01:58,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:58,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821083983] [2020-10-29 05:01:58,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:58,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:58,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:58,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:00,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:03,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:03,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-29 05:02:03,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:02:03,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 05:02:03,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:03,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:03,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:03,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 05:02:03,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 05:02:03,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:03,584 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:03,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:03,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:03,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:03,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:03,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:03,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 05:02:03,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:03,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:03,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:03,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:03,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:03,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:03,726 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 05:02:03,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:03,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:03,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:03,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 05:02:03,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:03,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 05:02:03,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:03,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:03,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:03,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:03,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 05:02:03,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:03,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 05:02:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:03,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:04,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:04,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 05:02:04,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:04,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-29 05:02:04,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:04,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:04,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:04,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:04,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 05:02:04,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:04,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-29 05:02:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:04,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:04,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:04,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:02:04,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:04,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 05:02:04,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:04,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:04,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:04,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 05:02:04,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:04,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:04,472 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 165 proven. 33 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-29 05:02:04,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821083983] [2020-10-29 05:02:04,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:04,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:02:04,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799830071] [2020-10-29 05:02:04,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:02:04,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:04,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:02:04,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:02:04,474 INFO L87 Difference]: Start difference. First operand 30193 states and 40597 transitions. Second operand 8 states. [2020-10-29 05:02:04,765 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:02:05,800 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:02:08,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:08,902 INFO L93 Difference]: Finished difference Result 60669 states and 84330 transitions. [2020-10-29 05:02:08,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:02:08,902 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 321 [2020-10-29 05:02:08,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:09,053 INFO L225 Difference]: With dead ends: 60669 [2020-10-29 05:02:09,053 INFO L226 Difference]: Without dead ends: 30482 [2020-10-29 05:02:09,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 05:02:09,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30482 states. [2020-10-29 05:02:10,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30482 to 30199. [2020-10-29 05:02:10,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30199 states. [2020-10-29 05:02:10,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30199 states to 30199 states and 40243 transitions. [2020-10-29 05:02:10,535 INFO L78 Accepts]: Start accepts. Automaton has 30199 states and 40243 transitions. Word has length 321 [2020-10-29 05:02:10,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:10,536 INFO L481 AbstractCegarLoop]: Abstraction has 30199 states and 40243 transitions. [2020-10-29 05:02:10,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:02:10,536 INFO L276 IsEmpty]: Start isEmpty. Operand 30199 states and 40243 transitions. [2020-10-29 05:02:10,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-29 05:02:10,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:10,598 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:10,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 05:02:10,598 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:10,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:10,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1669894347, now seen corresponding path program 1 times [2020-10-29 05:02:10,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:10,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324974582] [2020-10-29 05:02:10,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:10,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:10,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:11,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:15,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:15,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-29 05:02:15,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:02:15,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-29 05:02:15,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:15,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 05:02:15,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 05:02:15,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:16,015 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:16,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:16,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:16,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:16,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:16,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:16,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:02:16,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:16,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:16,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:16,162 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 05:02:16,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:16,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:16,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:16,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 05:02:16,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:16,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 05:02:16,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:16,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:16,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:16,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:16,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 05:02:16,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:16,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 05:02:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:16,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:16,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:16,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 05:02:16,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:16,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 05:02:16,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:16,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:16,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:16,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:16,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 05:02:16,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:16,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-29 05:02:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:16,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:16,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:16,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:02:16,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:16,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 05:02:16,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:16,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:16,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:16,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 05:02:16,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:16,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 175 proven. 33 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-29 05:02:16,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324974582] [2020-10-29 05:02:16,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:16,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:02:16,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031040205] [2020-10-29 05:02:16,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:02:16,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:16,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:02:16,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:02:16,898 INFO L87 Difference]: Start difference. First operand 30199 states and 40243 transitions. Second operand 7 states. [2020-10-29 05:02:17,325 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:02:20,315 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 05:02:22,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:22,531 INFO L93 Difference]: Finished difference Result 66626 states and 94816 transitions. [2020-10-29 05:02:22,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:02:22,532 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 326 [2020-10-29 05:02:22,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:22,722 INFO L225 Difference]: With dead ends: 66626 [2020-10-29 05:02:22,722 INFO L226 Difference]: Without dead ends: 36433 [2020-10-29 05:02:22,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:02:22,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36433 states. [2020-10-29 05:02:23,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36433 to 33780. [2020-10-29 05:02:23,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33780 states. [2020-10-29 05:02:24,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33780 states to 33780 states and 44440 transitions. [2020-10-29 05:02:24,031 INFO L78 Accepts]: Start accepts. Automaton has 33780 states and 44440 transitions. Word has length 326 [2020-10-29 05:02:24,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:24,032 INFO L481 AbstractCegarLoop]: Abstraction has 33780 states and 44440 transitions. [2020-10-29 05:02:24,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:02:24,032 INFO L276 IsEmpty]: Start isEmpty. Operand 33780 states and 44440 transitions. [2020-10-29 05:02:24,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-29 05:02:24,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:24,100 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 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 05:02:24,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 05:02:24,100 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:24,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:24,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1284885048, now seen corresponding path program 1 times [2020-10-29 05:02:24,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:24,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655879849] [2020-10-29 05:02:24,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:24,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:24,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:24,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:27,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:29,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:29,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 396 [2020-10-29 05:02:29,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:02:29,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 05:02:29,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:29,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:29,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 05:02:29,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:02:29,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-29 05:02:29,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:29,509 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:29,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:29,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:29,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:29,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:29,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:29,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:02:29,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:29,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:29,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:29,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:29,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:02:29,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:29,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:29,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:29,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:29,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:29,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 05:02:29,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:02:29,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-29 05:02:29,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:29,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:29,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:29,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:29,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 05:02:29,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:29,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-29 05:02:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:30,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:30,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:30,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 05:02:30,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:30,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-29 05:02:30,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:30,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:30,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:30,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:30,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 05:02:30,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:30,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-29 05:02:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:30,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:30,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:30,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:02:30,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:30,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:02:30,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:30,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:30,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:30,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 05:02:30,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:30,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:30,529 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 279 proven. 33 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-29 05:02:30,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655879849] [2020-10-29 05:02:30,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:30,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:02:30,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051373000] [2020-10-29 05:02:30,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:02:30,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:30,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:02:30,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:02:30,531 INFO L87 Difference]: Start difference. First operand 33780 states and 44440 transitions. Second operand 7 states. [2020-10-29 05:02:30,783 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:02:32,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:32,757 INFO L93 Difference]: Finished difference Result 61012 states and 79853 transitions. [2020-10-29 05:02:32,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:02:32,758 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 380 [2020-10-29 05:02:32,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:32,839 INFO L225 Difference]: With dead ends: 61012 [2020-10-29 05:02:32,839 INFO L226 Difference]: Without dead ends: 27238 [2020-10-29 05:02:32,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:02:32,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27238 states. [2020-10-29 05:02:33,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27238 to 27212. [2020-10-29 05:02:33,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27212 states. [2020-10-29 05:02:33,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27212 states to 27212 states and 34763 transitions. [2020-10-29 05:02:33,639 INFO L78 Accepts]: Start accepts. Automaton has 27212 states and 34763 transitions. Word has length 380 [2020-10-29 05:02:33,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:33,640 INFO L481 AbstractCegarLoop]: Abstraction has 27212 states and 34763 transitions. [2020-10-29 05:02:33,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:02:33,640 INFO L276 IsEmpty]: Start isEmpty. Operand 27212 states and 34763 transitions. [2020-10-29 05:02:33,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-10-29 05:02:33,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:33,689 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, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:33,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 05:02:33,689 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:33,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:33,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1226645334, now seen corresponding path program 1 times [2020-10-29 05:02:33,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:33,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372003927] [2020-10-29 05:02:33,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:33,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:34,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:34,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:35,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:38,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:38,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:38,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 400 [2020-10-29 05:02:38,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:02:38,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-29 05:02:38,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:38,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:38,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 05:02:38,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:02:38,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 391 [2020-10-29 05:02:38,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:39,280 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:39,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:39,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:39,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:39,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:39,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:39,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 05:02:39,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:39,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:39,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:39,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:39,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:02:39,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:39,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:39,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:39,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:39,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 05:02:39,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:39,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 05:02:39,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:39,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:39,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:39,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 05:02:39,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:39,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 05:02:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:39,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:39,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:39,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 05:02:39,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:39,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-29 05:02:39,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:39,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:39,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:39,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:39,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 05:02:39,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:39,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-29 05:02:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:40,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:40,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:40,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:02:40,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:40,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 05:02:40,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:40,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 05:02:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 05:02:40,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:40,313 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 57 proven. 204 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 05:02:40,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372003927] [2020-10-29 05:02:40,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:40,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:02:40,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363182185] [2020-10-29 05:02:40,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 05:02:40,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:40,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 05:02:40,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 05:02:40,315 INFO L87 Difference]: Start difference. First operand 27212 states and 34763 transitions. Second operand 9 states. [2020-10-29 05:02:40,601 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 05:02:41,011 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:02:43,543 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:02:47,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:47,201 INFO L93 Difference]: Finished difference Result 80511 states and 107714 transitions. [2020-10-29 05:02:47,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 05:02:47,202 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 384 [2020-10-29 05:02:47,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:47,402 INFO L225 Difference]: With dead ends: 80511 [2020-10-29 05:02:47,403 INFO L226 Difference]: Without dead ends: 53305 [2020-10-29 05:02:47,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:02:47,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53305 states. [2020-10-29 05:02:48,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53305 to 52677. [2020-10-29 05:02:48,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52677 states. [2020-10-29 05:02:48,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52677 states to 52677 states and 67269 transitions. [2020-10-29 05:02:48,886 INFO L78 Accepts]: Start accepts. Automaton has 52677 states and 67269 transitions. Word has length 384 [2020-10-29 05:02:49,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:49,202 INFO L481 AbstractCegarLoop]: Abstraction has 52677 states and 67269 transitions. [2020-10-29 05:02:49,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 05:02:49,203 INFO L276 IsEmpty]: Start isEmpty. Operand 52677 states and 67269 transitions. [2020-10-29 05:02:49,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2020-10-29 05:02:49,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:49,279 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 05:02:49,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 05:02:49,280 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:49,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:49,280 INFO L82 PathProgramCache]: Analyzing trace with hash -6996544, now seen corresponding path program 1 times [2020-10-29 05:02:49,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:49,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287282507] [2020-10-29 05:02:49,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:49,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:49,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:50,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:50,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:50,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:51,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:52,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:54,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:54,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 601 [2020-10-29 05:02:54,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 05:02:54,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-29 05:02:54,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:54,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:02:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 209 [2020-10-29 05:02:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-29 05:02:54,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:54,834 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:54,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:54,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:54,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:54,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:54,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:54,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:02:54,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:54,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:54,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:54,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:54,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:54,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 41 [2020-10-29 05:02:54,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:55,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:55,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:55,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 05:02:55,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:55,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 05:02:55,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:55,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:55,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:55,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:55,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:55,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:55,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-29 05:02:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:55,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:55,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:55,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 05:02:55,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:55,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:02:55,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:55,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:55,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:55,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:55,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:55,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:55,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-29 05:02:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:55,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:55,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:55,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:02:55,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:55,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 05:02:55,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:55,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:55,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:55,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:55,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 05:02:55,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:55,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-29 05:02:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:55,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:55,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:55,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:55,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 05:02:55,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:02:55,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-29 05:02:55,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:55,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:55,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:55,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:55,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 05:02:55,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:55,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-29 05:02:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:55,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:55,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:55,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 05:02:55,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:55,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-29 05:02:55,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:55,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:55,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:55,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:55,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 05:02:55,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:55,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2020-10-29 05:02:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:55,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:55,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:55,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:02:55,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:55,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 05:02:55,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:55,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:55,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:55,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 05:02:55,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:55,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:56,195 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 640 proven. 37 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2020-10-29 05:02:56,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287282507] [2020-10-29 05:02:56,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:56,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:02:56,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157049809] [2020-10-29 05:02:56,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:02:56,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:56,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:02:56,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:02:56,198 INFO L87 Difference]: Start difference. First operand 52677 states and 67269 transitions. Second operand 7 states. [2020-10-29 05:02:56,462 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:03:00,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:03:00,974 INFO L93 Difference]: Finished difference Result 136274 states and 180269 transitions. [2020-10-29 05:03:00,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 05:03:00,975 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 579 [2020-10-29 05:03:00,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:03:01,240 INFO L225 Difference]: With dead ends: 136274 [2020-10-29 05:03:01,240 INFO L226 Difference]: Without dead ends: 83603 [2020-10-29 05:03:01,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-29 05:03:01,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83603 states. [2020-10-29 05:03:03,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83603 to 82187. [2020-10-29 05:03:03,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82187 states. [2020-10-29 05:03:04,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82187 states to 82187 states and 104929 transitions. [2020-10-29 05:03:04,093 INFO L78 Accepts]: Start accepts. Automaton has 82187 states and 104929 transitions. Word has length 579 [2020-10-29 05:03:04,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:03:04,094 INFO L481 AbstractCegarLoop]: Abstraction has 82187 states and 104929 transitions. [2020-10-29 05:03:04,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:03:04,094 INFO L276 IsEmpty]: Start isEmpty. Operand 82187 states and 104929 transitions. [2020-10-29 05:03:04,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2020-10-29 05:03:04,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:03:04,440 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 05:03:04,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 05:03:04,441 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:03:04,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:03:04,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1266140367, now seen corresponding path program 1 times [2020-10-29 05:03:04,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:03:04,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526441789] [2020-10-29 05:03:04,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:03:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:04,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:04,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:05,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:05,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:06,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:08,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:09,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:09,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:09,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 692 [2020-10-29 05:03:09,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 05:03:09,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-29 05:03:09,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:09,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:03:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 05:03:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 05:03:09,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:09,960 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:03:09,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:03:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:09,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:09,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:09,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:03:09,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:09,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:03:09,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:09,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:09,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:09,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:09,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:09,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:10,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:03:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:10,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:10,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:10,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 05:03:10,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:10,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:03:10,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:10,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:10,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:10,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 05:03:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:10,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:10,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:10,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:03:10,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:10,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 05:03:10,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:10,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:10,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:10,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 05:03:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:10,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:10,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:10,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 05:03:10,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:10,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:03:10,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:10,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:10,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:03:10,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:10,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 05:03:10,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:10,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 05:03:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:10,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:10,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:10,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 05:03:10,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:10,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-29 05:03:10,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:10,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:10,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:03:10,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:03:10,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 05:03:10,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:10,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-29 05:03:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:10,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:10,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:10,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 05:03:10,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:10,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 05:03:10,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:10,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:10,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:10,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-29 05:03:10,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:10,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:10,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-29 05:03:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:10,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:10,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:10,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:03:10,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:10,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 05:03:10,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:10,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:10,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:10,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 05:03:10,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:10,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:10,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-10-29 05:03:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:10,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:10,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:10,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 05:03:10,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:10,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 05:03:10,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:10,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:10,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:10,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-29 05:03:10,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:10,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:10,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2020-10-29 05:03:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:10,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:10,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:10,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:03:10,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:10,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 05:03:10,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:10,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:10,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:10,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 05:03:10,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:10,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:11,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 581 proven. 274 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2020-10-29 05:03:11,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526441789] [2020-10-29 05:03:11,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:03:11,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:03:11,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148104344] [2020-10-29 05:03:11,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:03:11,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:03:11,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:03:11,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:03:11,424 INFO L87 Difference]: Start difference. First operand 82187 states and 104929 transitions. Second operand 7 states. [2020-10-29 05:03:11,981 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:03:12,774 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:03:17,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:03:17,344 INFO L93 Difference]: Finished difference Result 152756 states and 204120 transitions. [2020-10-29 05:03:17,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:03:17,344 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 666 [2020-10-29 05:03:17,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:03:17,827 INFO L225 Difference]: With dead ends: 152756 [2020-10-29 05:03:17,828 INFO L226 Difference]: Without dead ends: 67276 [2020-10-29 05:03:17,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 05:03:17,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67276 states. [2020-10-29 05:03:19,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67276 to 54286. [2020-10-29 05:03:19,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54286 states. [2020-10-29 05:03:19,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54286 states to 54286 states and 63268 transitions. [2020-10-29 05:03:19,360 INFO L78 Accepts]: Start accepts. Automaton has 54286 states and 63268 transitions. Word has length 666 [2020-10-29 05:03:19,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:03:19,361 INFO L481 AbstractCegarLoop]: Abstraction has 54286 states and 63268 transitions. [2020-10-29 05:03:19,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:03:19,361 INFO L276 IsEmpty]: Start isEmpty. Operand 54286 states and 63268 transitions. [2020-10-29 05:03:19,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2020-10-29 05:03:19,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:03:19,435 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 05:03:19,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 05:03:19,435 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:03:19,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:03:19,436 INFO L82 PathProgramCache]: Analyzing trace with hash -205134026, now seen corresponding path program 1 times [2020-10-29 05:03:19,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:03:19,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337380619] [2020-10-29 05:03:19,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:03:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:19,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:19,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:20,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:21,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:24,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:24,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 691 [2020-10-29 05:03:24,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:03:24,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-29 05:03:24,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:24,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:24,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:03:24,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 336 [2020-10-29 05:03:24,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 05:03:24,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:24,967 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:03:24,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:03:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:24,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:24,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:24,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:03:24,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:24,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:03:24,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:24,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:24,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:24,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:24,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:24,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:25,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:03:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:25,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:25,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:25,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 05:03:25,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:25,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 05:03:25,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:25,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:25,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:25,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:25,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:25,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:25,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 05:03:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:25,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:25,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:25,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 05:03:25,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:25,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 05:03:25,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:25,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:25,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:25,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:25,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:25,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:25,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-29 05:03:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:25,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:25,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:25,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 05:03:25,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:25,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 05:03:25,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:25,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:25,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:25,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:25,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:25,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:25,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 05:03:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:25,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:25,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:25,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:03:25,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:25,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 05:03:25,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:25,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:25,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:03:25,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:25,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 05:03:25,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:25,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-10-29 05:03:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:25,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:25,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:25,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 05:03:25,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:25,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-29 05:03:25,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:25,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:25,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:03:25,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:03:25,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 05:03:25,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:25,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2020-10-29 05:03:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:25,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:25,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:25,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:03:25,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:25,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 05:03:25,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:25,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:25,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:25,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 05:03:25,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:25,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:26,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 813 proven. 33 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-10-29 05:03:26,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337380619] [2020-10-29 05:03:26,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:03:26,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:03:26,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505019476] [2020-10-29 05:03:26,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:03:26,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:03:26,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:03:26,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:03:26,269 INFO L87 Difference]: Start difference. First operand 54286 states and 63268 transitions. Second operand 7 states. [2020-10-29 05:03:26,553 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:03:27,257 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:03:30,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:03:30,264 INFO L93 Difference]: Finished difference Result 107090 states and 126655 transitions. [2020-10-29 05:03:30,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:03:30,265 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 669 [2020-10-29 05:03:30,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:03:30,267 INFO L225 Difference]: With dead ends: 107090 [2020-10-29 05:03:30,267 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 05:03:30,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:03:30,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 05:03:30,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 05:03:30,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 05:03:30,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 05:03:30,397 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 669 [2020-10-29 05:03:30,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:03:30,398 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 05:03:30,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:03:30,398 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 05:03:30,398 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 05:03:30,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 05:03:30,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 05:03:30,705 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 188 [2020-10-29 05:03:30,860 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 174 [2020-10-29 05:03:32,002 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 185