/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=SHALLOWEST --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/Problem16_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:00:40,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:00:40,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:00:41,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:00:41,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:00:41,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:00:41,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:00:41,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:00:41,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:00:41,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:00:41,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:00:41,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:00:41,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:00:41,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:00:41,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:00:41,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:00:41,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:00:41,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:00:41,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:00:41,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:00:41,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:00:41,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:00:41,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:00:41,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:00:41,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:00:41,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:00:41,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:00:41,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:00:41,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:00:41,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-27 00:00:41,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:00:41,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:00:41,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:00:41,075 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 [2020-10-27 00:00:41,122 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:00:41,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:00:41,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:00:41,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:00:41,126 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:00:41,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:00:41,127 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:00:41,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:00:41,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:00:41,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:00:41,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:00:41,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:00:41,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:00:41,130 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:00:41,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:00:41,130 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:00:41,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:00:41,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:00:41,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:00:41,132 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:00:41,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:00:41,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:00:41,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:00:41,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:00:41,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:00:41,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:00:41,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:00:41,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:00:41,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:00:41,134 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:00:41,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:00:41,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:00:41,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:00:41,615 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:00:41,616 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:00:41,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label44.c [2020-10-27 00:00:41,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9fdac25b/0ed33e143157409d9b3a3f61457ef0b1/FLAG619e8e21c [2020-10-27 00:00:42,493 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:00:42,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label44.c [2020-10-27 00:00:42,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9fdac25b/0ed33e143157409d9b3a3f61457ef0b1/FLAG619e8e21c [2020-10-27 00:00:42,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9fdac25b/0ed33e143157409d9b3a3f61457ef0b1 [2020-10-27 00:00:42,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:00:42,652 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:00:42,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:00:42,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:00:42,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:00:42,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:00:42" (1/1) ... [2020-10-27 00:00:42,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de45a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:42, skipping insertion in model container [2020-10-27 00:00:42,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:00:42" (1/1) ... [2020-10-27 00:00:42,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:00:42,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:00:43,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:00:43,636 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:00:43,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:00:43,934 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:00:43,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:43 WrapperNode [2020-10-27 00:00:43,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:00:43,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:00:43,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:00:43,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:00:43,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:43" (1/1) ... [2020-10-27 00:00:43,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:43" (1/1) ... [2020-10-27 00:00:43,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:43" (1/1) ... [2020-10-27 00:00:43,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:43" (1/1) ... [2020-10-27 00:00:44,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:43" (1/1) ... [2020-10-27 00:00:44,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:43" (1/1) ... [2020-10-27 00:00:44,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:43" (1/1) ... [2020-10-27 00:00:44,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:00:44,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:00:44,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:00:44,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:00:44,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:43" (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 [2020-10-27 00:00:44,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:00:44,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:00:44,202 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:00:44,203 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:00:44,203 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:00:44,204 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:00:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:00:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:00:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:00:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:00:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:00:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:00:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:00:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:00:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:00:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:00:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:00:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:00:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:00:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:00:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:00:47,322 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:00:47,323 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:00:47,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:00:47 BoogieIcfgContainer [2020-10-27 00:00:47,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:00:47,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:00:47,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:00:47,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:00:47,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:00:42" (1/3) ... [2020-10-27 00:00:47,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6b1fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:00:47, skipping insertion in model container [2020-10-27 00:00:47,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:43" (2/3) ... [2020-10-27 00:00:47,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6b1fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:00:47, skipping insertion in model container [2020-10-27 00:00:47,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:00:47" (3/3) ... [2020-10-27 00:00:47,336 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label44.c [2020-10-27 00:00:47,350 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:00:47,357 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:00:47,371 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:00:47,406 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:00:47,406 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:00:47,406 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:00:47,407 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:00:47,407 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:00:47,407 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:00:47,407 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:00:47,407 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:00:47,441 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-27 00:00:47,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 00:00:47,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:47,451 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] [2020-10-27 00:00:47,451 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:47,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:47,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1724332564, now seen corresponding path program 1 times [2020-10-27 00:00:47,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:47,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794869010] [2020-10-27 00:00:47,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:47,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:48,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:48,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 00:00:48,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:48,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-27 00:00:48,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:48,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:00:48,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:00:48,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 00:00:48,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:00:48,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:48,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:48,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:48,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:48,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:48,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:00:48,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:48,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:00:48,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:00:48,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:00:48,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794869010] [2020-10-27 00:00:48,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:00:48,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 00:00:48,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406431128] [2020-10-27 00:00:48,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:00:48,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:48,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:00:48,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:00:48,554 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 5 states. [2020-10-27 00:00:55,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:55,999 INFO L93 Difference]: Finished difference Result 1520 states and 2855 transitions. [2020-10-27 00:00:56,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:00:56,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-27 00:00:56,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:56,028 INFO L225 Difference]: With dead ends: 1520 [2020-10-27 00:00:56,028 INFO L226 Difference]: Without dead ends: 1039 [2020-10-27 00:00:56,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:56,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-27 00:00:56,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1035. [2020-10-27 00:00:56,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2020-10-27 00:00:56,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1486 transitions. [2020-10-27 00:00:56,176 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1486 transitions. Word has length 37 [2020-10-27 00:00:56,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:56,177 INFO L481 AbstractCegarLoop]: Abstraction has 1035 states and 1486 transitions. [2020-10-27 00:00:56,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:00:56,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1486 transitions. [2020-10-27 00:00:56,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 00:00:56,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:56,184 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:00:56,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:00:56,185 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:56,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:56,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1346240627, now seen corresponding path program 1 times [2020-10-27 00:00:56,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:56,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082140280] [2020-10-27 00:00:56,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:56,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:56,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:57,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:57,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 00:00:57,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:00:57,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1305 [2020-10-27 00:00:57,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:57,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:00:57,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:00:57,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:00:57,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:00:57,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:57,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:57,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:57,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:57,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:57,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 00:00:57,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:57,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:57,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:57,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:00:57,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:00:57,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:57,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:57,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:57,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:00:57,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:57,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-27 00:00:57,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:57,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:57,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:57,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:00:57,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:58,068 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:00:58,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082140280] [2020-10-27 00:00:58,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:00:58,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 00:00:58,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983699124] [2020-10-27 00:00:58,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:00:58,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:58,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:00:58,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:00:58,074 INFO L87 Difference]: Start difference. First operand 1035 states and 1486 transitions. Second operand 8 states. [2020-10-27 00:01:08,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:08,516 INFO L93 Difference]: Finished difference Result 4148 states and 6102 transitions. [2020-10-27 00:01:08,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:01:08,518 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-10-27 00:01:08,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:08,547 INFO L225 Difference]: With dead ends: 4148 [2020-10-27 00:01:08,547 INFO L226 Difference]: Without dead ends: 3119 [2020-10-27 00:01:08,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-27 00:01:08,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3119 states. [2020-10-27 00:01:08,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3119 to 3103. [2020-10-27 00:01:08,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3103 states. [2020-10-27 00:01:08,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3103 states to 3103 states and 4166 transitions. [2020-10-27 00:01:08,720 INFO L78 Accepts]: Start accepts. Automaton has 3103 states and 4166 transitions. Word has length 113 [2020-10-27 00:01:08,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:08,721 INFO L481 AbstractCegarLoop]: Abstraction has 3103 states and 4166 transitions. [2020-10-27 00:01:08,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:01:08,721 INFO L276 IsEmpty]: Start isEmpty. Operand 3103 states and 4166 transitions. [2020-10-27 00:01:08,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-27 00:01:08,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:08,730 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:01:08,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:01:08,731 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:08,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:08,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1519606626, now seen corresponding path program 1 times [2020-10-27 00:01:08,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:08,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318381533] [2020-10-27 00:01:08,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:08,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:08,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:09,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:09,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:10,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:12,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:12,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 00:01:12,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:01:12,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3258 [2020-10-27 00:01:12,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:12,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:01:12,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:01:12,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-27 00:01:12,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:12,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:12,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:12,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:12,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:12,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:12,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:01:12,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:12,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:12,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:12,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:01:12,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:12,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:12,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:12,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:12,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:12,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 00:01:12,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:01:12,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-27 00:01:12,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:12,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:12,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:12,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 00:01:12,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:12,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 00:01:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:12,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:12,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:12,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:01:12,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:12,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-27 00:01:12,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:12,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:12,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:12,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 00:01:12,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:12,956 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 00:01:12,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318381533] [2020-10-27 00:01:12,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:12,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:01:12,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564197263] [2020-10-27 00:01:12,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:01:12,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:12,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:01:12,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:01:12,963 INFO L87 Difference]: Start difference. First operand 3103 states and 4166 transitions. Second operand 8 states. [2020-10-27 00:01:18,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:18,697 INFO L93 Difference]: Finished difference Result 7296 states and 10240 transitions. [2020-10-27 00:01:18,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:01:18,698 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 200 [2020-10-27 00:01:18,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:18,735 INFO L225 Difference]: With dead ends: 7296 [2020-10-27 00:01:18,736 INFO L226 Difference]: Without dead ends: 4199 [2020-10-27 00:01:18,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:01:18,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4199 states. [2020-10-27 00:01:18,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4199 to 3810. [2020-10-27 00:01:18,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3810 states. [2020-10-27 00:01:18,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3810 states to 3810 states and 5142 transitions. [2020-10-27 00:01:18,944 INFO L78 Accepts]: Start accepts. Automaton has 3810 states and 5142 transitions. Word has length 200 [2020-10-27 00:01:18,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:18,946 INFO L481 AbstractCegarLoop]: Abstraction has 3810 states and 5142 transitions. [2020-10-27 00:01:18,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:01:18,946 INFO L276 IsEmpty]: Start isEmpty. Operand 3810 states and 5142 transitions. [2020-10-27 00:01:18,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-27 00:01:18,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:18,961 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:01:18,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:01:18,965 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:18,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:18,966 INFO L82 PathProgramCache]: Analyzing trace with hash -631337486, now seen corresponding path program 1 times [2020-10-27 00:01:18,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:18,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105372339] [2020-10-27 00:01:18,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:19,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:19,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:19,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:24,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:24,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-27 00:01:24,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:01:24,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 00:01:24,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:24,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:01:24,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:01:24,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:01:24,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:24,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:24,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:24,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:24,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:24,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:24,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:01:24,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:01:24,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:24,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:24,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:24,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:24,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:01:24,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:24,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-27 00:01:24,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:24,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:24,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:24,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 00:01:24,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:24,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 00:01:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:24,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:24,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:24,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 00:01:24,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:24,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 00:01:24,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:24,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:24,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-27 00:01:24,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:24,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:24,946 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 58 proven. 95 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:01:24,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105372339] [2020-10-27 00:01:24,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:24,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:01:24,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451784566] [2020-10-27 00:01:24,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:01:24,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:24,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:01:24,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:01:24,951 INFO L87 Difference]: Start difference. First operand 3810 states and 5142 transitions. Second operand 7 states. [2020-10-27 00:01:35,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:35,796 INFO L93 Difference]: Finished difference Result 11154 states and 15507 transitions. [2020-10-27 00:01:35,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:01:35,797 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 319 [2020-10-27 00:01:35,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:35,846 INFO L225 Difference]: With dead ends: 11154 [2020-10-27 00:01:35,846 INFO L226 Difference]: Without dead ends: 7350 [2020-10-27 00:01:35,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:01:35,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7350 states. [2020-10-27 00:01:36,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7350 to 7308. [2020-10-27 00:01:36,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7308 states. [2020-10-27 00:01:36,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7308 states to 7308 states and 9864 transitions. [2020-10-27 00:01:36,117 INFO L78 Accepts]: Start accepts. Automaton has 7308 states and 9864 transitions. Word has length 319 [2020-10-27 00:01:36,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:36,118 INFO L481 AbstractCegarLoop]: Abstraction has 7308 states and 9864 transitions. [2020-10-27 00:01:36,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:01:36,118 INFO L276 IsEmpty]: Start isEmpty. Operand 7308 states and 9864 transitions. [2020-10-27 00:01:36,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-10-27 00:01:36,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:36,128 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, 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, 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] [2020-10-27 00:01:36,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:01:36,129 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:36,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:36,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1122960387, now seen corresponding path program 1 times [2020-10-27 00:01:36,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:36,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752508330] [2020-10-27 00:01:36,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:36,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:36,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:36,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:37,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:40,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:40,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:40,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-27 00:01:40,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:01:40,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4429 [2020-10-27 00:01:40,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:40,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:40,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 00:01:40,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:01:40,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:40,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:40,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:40,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:40,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:40,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:40,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:01:40,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:40,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:40,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:40,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:40,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:40,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:40,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:40,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:40,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 00:01:40,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:40,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 00:01:40,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:40,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:40,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:40,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 00:01:40,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:01:40,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 00:01:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:40,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:41,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:41,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 00:01:41,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:41,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-27 00:01:41,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:41,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:41,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:41,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-27 00:01:41,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:41,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-27 00:01:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:41,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:41,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:41,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:01:41,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:41,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 00:01:41,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:41,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:41,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:01:41,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:41,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:41,593 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 179 proven. 114 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-27 00:01:41,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752508330] [2020-10-27 00:01:41,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:41,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:01:41,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503788014] [2020-10-27 00:01:41,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:01:41,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:41,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:01:41,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:01:41,596 INFO L87 Difference]: Start difference. First operand 7308 states and 9864 transitions. Second operand 8 states. [2020-10-27 00:01:50,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:50,619 INFO L93 Difference]: Finished difference Result 18460 states and 25695 transitions. [2020-10-27 00:01:50,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:01:50,620 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 378 [2020-10-27 00:01:50,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:50,678 INFO L225 Difference]: With dead ends: 18460 [2020-10-27 00:01:50,679 INFO L226 Difference]: Without dead ends: 9664 [2020-10-27 00:01:50,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-27 00:01:50,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9664 states. [2020-10-27 00:01:50,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9664 to 8956. [2020-10-27 00:01:50,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8956 states. [2020-10-27 00:01:50,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8956 states to 8956 states and 9983 transitions. [2020-10-27 00:01:50,945 INFO L78 Accepts]: Start accepts. Automaton has 8956 states and 9983 transitions. Word has length 378 [2020-10-27 00:01:50,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:50,946 INFO L481 AbstractCegarLoop]: Abstraction has 8956 states and 9983 transitions. [2020-10-27 00:01:50,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:01:50,946 INFO L276 IsEmpty]: Start isEmpty. Operand 8956 states and 9983 transitions. [2020-10-27 00:01:50,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2020-10-27 00:01:50,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:50,973 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:50,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:01:50,974 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:50,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:50,975 INFO L82 PathProgramCache]: Analyzing trace with hash -482187134, now seen corresponding path program 1 times [2020-10-27 00:01:50,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:50,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133056870] [2020-10-27 00:01:50,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:51,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:51,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:51,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:56,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:56,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 667 [2020-10-27 00:01:56,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:01:56,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 00:01:56,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:56,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 00:01:56,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:01:56,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-27 00:01:56,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:56,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:56,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:56,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:56,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:56,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:56,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 00:01:56,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:56,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:56,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:56,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:01:56,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:01:56,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:56,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:56,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:57,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:57,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 00:01:57,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:01:57,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1145 [2020-10-27 00:01:57,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:57,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 00:01:57,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:57,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-27 00:01:57,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:58,785 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-10-27 00:01:59,064 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2020-10-27 00:01:59,361 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2020-10-27 00:01:59,682 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-10-27 00:02:00,008 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2020-10-27 00:02:01,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 00:02:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:01,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:01,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:01,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:02:01,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:01,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 00:02:01,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:01,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:02:01,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:01,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:01,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 00:02:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:01,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:01,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:01,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:02:01,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:01,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 00:02:01,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:01,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:01,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:02:01,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:01,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:01,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2020-10-27 00:02:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:01,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:01,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:01,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:02:01,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:01,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 00:02:01,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:01,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:01,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:02:01,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:01,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:03,888 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 116 proven. 348 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2020-10-27 00:02:03,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133056870] [2020-10-27 00:02:03,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:03,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 00:02:03,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911562279] [2020-10-27 00:02:03,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 00:02:03,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:03,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 00:02:03,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:02:03,891 INFO L87 Difference]: Start difference. First operand 8956 states and 9983 transitions. Second operand 13 states. [2020-10-27 00:02:04,039 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-27 00:02:04,197 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-27 00:02:04,364 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-27 00:02:05,373 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 89 [2020-10-27 00:02:06,076 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 92 [2020-10-27 00:02:06,718 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 95 [2020-10-27 00:02:07,545 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 99 [2020-10-27 00:02:08,434 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 101 [2020-10-27 00:02:09,204 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 104 [2020-10-27 00:02:10,429 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 93 [2020-10-27 00:02:11,022 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-10-27 00:02:11,514 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2020-10-27 00:02:12,076 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2020-10-27 00:02:12,770 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 107 [2020-10-27 00:02:13,319 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 122 [2020-10-27 00:02:15,094 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2020-10-27 00:02:15,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:15,362 INFO L93 Difference]: Finished difference Result 17911 states and 19968 transitions. [2020-10-27 00:02:15,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 00:02:15,368 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 649 [2020-10-27 00:02:15,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:15,399 INFO L225 Difference]: With dead ends: 17911 [2020-10-27 00:02:15,399 INFO L226 Difference]: Without dead ends: 8869 [2020-10-27 00:02:15,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=254, Invalid=616, Unknown=0, NotChecked=0, Total=870 [2020-10-27 00:02:15,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8869 states. [2020-10-27 00:02:15,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8869 to 8863. [2020-10-27 00:02:15,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8863 states. [2020-10-27 00:02:15,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8863 states to 8863 states and 9887 transitions. [2020-10-27 00:02:15,642 INFO L78 Accepts]: Start accepts. Automaton has 8863 states and 9887 transitions. Word has length 649 [2020-10-27 00:02:15,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:15,643 INFO L481 AbstractCegarLoop]: Abstraction has 8863 states and 9887 transitions. [2020-10-27 00:02:15,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 00:02:15,643 INFO L276 IsEmpty]: Start isEmpty. Operand 8863 states and 9887 transitions. [2020-10-27 00:02:15,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2020-10-27 00:02:15,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:15,679 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 00:02:15,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:02:15,680 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:15,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:15,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1394249267, now seen corresponding path program 1 times [2020-10-27 00:02:15,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:15,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092841713] [2020-10-27 00:02:15,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:15,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:16,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:16,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:20,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:20,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 788 [2020-10-27 00:02:20,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:02:20,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 00:02:20,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:20,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:20,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-27 00:02:20,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:02:20,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:20,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:20,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:20,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:20,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:20,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:20,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:02:20,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:20,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:20,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:20,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:20,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:21,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:21,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:21,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:21,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:02:21,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:21,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 00:02:21,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:21,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:21,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:21,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-27 00:02:21,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:21,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:02:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:21,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:21,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:21,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:02:21,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:21,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-27 00:02:21,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:21,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:21,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:21,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:02:21,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:21,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-27 00:02:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:21,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:21,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:21,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:02:21,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:21,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 00:02:21,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:21,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:02:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:21,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:21,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-27 00:02:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:21,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:22,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:22,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:02:22,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:22,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:02:22,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:22,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:22,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:02:22,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:22,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:22,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-27 00:02:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:22,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:22,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:22,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:02:22,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:22,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 00:02:22,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:22,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:22,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:02:22,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:22,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:22,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 283 proven. 347 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked. [2020-10-27 00:02:22,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092841713] [2020-10-27 00:02:22,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:22,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:02:22,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245530170] [2020-10-27 00:02:22,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:02:22,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:22,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:02:22,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:02:22,768 INFO L87 Difference]: Start difference. First operand 8863 states and 9887 transitions. Second operand 7 states. [2020-10-27 00:02:27,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:27,752 INFO L93 Difference]: Finished difference Result 20884 states and 23435 transitions. [2020-10-27 00:02:27,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:02:27,753 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 768 [2020-10-27 00:02:27,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:27,797 INFO L225 Difference]: With dead ends: 20884 [2020-10-27 00:02:27,797 INFO L226 Difference]: Without dead ends: 12271 [2020-10-27 00:02:27,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:02:27,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12271 states. [2020-10-27 00:02:28,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12271 to 12259. [2020-10-27 00:02:28,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12259 states. [2020-10-27 00:02:28,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12259 states to 12259 states and 13471 transitions. [2020-10-27 00:02:28,125 INFO L78 Accepts]: Start accepts. Automaton has 12259 states and 13471 transitions. Word has length 768 [2020-10-27 00:02:28,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:28,126 INFO L481 AbstractCegarLoop]: Abstraction has 12259 states and 13471 transitions. [2020-10-27 00:02:28,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:02:28,126 INFO L276 IsEmpty]: Start isEmpty. Operand 12259 states and 13471 transitions. [2020-10-27 00:02:28,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 877 [2020-10-27 00:02:28,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:28,186 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 00:02:28,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:02:28,187 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:28,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:28,188 INFO L82 PathProgramCache]: Analyzing trace with hash 222442516, now seen corresponding path program 1 times [2020-10-27 00:02:28,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:28,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286222774] [2020-10-27 00:02:28,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:28,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:28,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:28,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:33,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:33,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 898 [2020-10-27 00:02:33,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:02:33,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-27 00:02:33,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:33,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:33,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-27 00:02:33,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:02:33,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:33,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:33,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:33,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:33,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:33,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:33,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:02:33,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:33,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:33,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:33,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:33,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:33,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:33,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:33,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:33,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:02:33,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:33,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 00:02:33,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:33,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:33,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:33,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:33,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:33,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:02:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:33,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:33,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:33,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:02:33,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:33,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 00:02:33,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:33,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:33,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:33,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 00:02:33,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:33,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:02:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:33,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:33,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:33,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:02:33,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:33,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 00:02:33,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:33,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:33,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:33,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:02:33,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:34,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-27 00:02:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:34,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:34,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:34,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:02:34,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:34,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 00:02:34,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:34,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:34,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:02:34,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:34,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:34,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 00:02:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:34,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:34,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:34,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:02:34,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:34,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 00:02:34,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:34,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:34,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:02:34,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:34,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:34,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2020-10-27 00:02:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:34,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:34,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:34,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:02:34,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:34,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 00:02:34,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:34,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:34,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:02:34,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:34,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1855 backedges. 426 proven. 347 refuted. 0 times theorem prover too weak. 1082 trivial. 0 not checked. [2020-10-27 00:02:34,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286222774] [2020-10-27 00:02:34,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:34,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:02:34,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763542452] [2020-10-27 00:02:34,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:02:34,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:34,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:02:34,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:02:34,979 INFO L87 Difference]: Start difference. First operand 12259 states and 13471 transitions. Second operand 7 states. [2020-10-27 00:02:39,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:39,958 INFO L93 Difference]: Finished difference Result 26652 states and 29242 transitions. [2020-10-27 00:02:39,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:02:39,966 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 876 [2020-10-27 00:02:39,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:40,026 INFO L225 Difference]: With dead ends: 26652 [2020-10-27 00:02:40,026 INFO L226 Difference]: Without dead ends: 14643 [2020-10-27 00:02:40,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:02:40,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14643 states. [2020-10-27 00:02:40,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14643 to 14628. [2020-10-27 00:02:40,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14628 states. [2020-10-27 00:02:40,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14628 states to 14628 states and 15926 transitions. [2020-10-27 00:02:40,475 INFO L78 Accepts]: Start accepts. Automaton has 14628 states and 15926 transitions. Word has length 876 [2020-10-27 00:02:40,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:40,476 INFO L481 AbstractCegarLoop]: Abstraction has 14628 states and 15926 transitions. [2020-10-27 00:02:40,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:02:40,477 INFO L276 IsEmpty]: Start isEmpty. Operand 14628 states and 15926 transitions. [2020-10-27 00:02:40,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 897 [2020-10-27 00:02:40,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:40,505 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:02:40,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:02:40,505 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:40,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:40,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1036357549, now seen corresponding path program 1 times [2020-10-27 00:02:40,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:40,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713499652] [2020-10-27 00:02:40,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:40,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:41,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:41,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:42,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:45,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:45,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 916 [2020-10-27 00:02:45,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:02:45,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 00:02:45,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:45,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:02:45,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:02:45,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-27 00:02:45,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:45,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:45,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:45,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:45,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:45,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:45,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 00:02:45,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:45,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:45,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:45,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:02:45,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:45,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:45,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:46,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:46,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:46,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:02:46,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:02:46,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-27 00:02:46,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:46,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:46,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:46,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-27 00:02:46,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:46,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:02:46,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:46,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:46,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:46,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 00:02:46,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:46,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-27 00:02:46,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:46,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:46,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:46,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-27 00:02:46,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:47,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-27 00:02:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:47,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:47,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:47,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:02:47,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:47,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 00:02:47,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:47,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:47,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:02:47,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:47,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:47,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2020-10-27 00:02:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:47,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:47,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:47,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:02:47,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:47,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:02:47,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:47,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:47,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:02:47,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:47,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:47,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 729 [2020-10-27 00:02:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:47,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:47,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:47,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:02:47,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:47,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:02:47,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:47,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:47,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:02:47,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:47,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:48,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 398 proven. 698 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2020-10-27 00:02:48,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713499652] [2020-10-27 00:02:48,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:48,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:02:48,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150319223] [2020-10-27 00:02:48,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:02:48,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:48,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:02:48,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:02:48,318 INFO L87 Difference]: Start difference. First operand 14628 states and 15926 transitions. Second operand 8 states. [2020-10-27 00:02:53,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:53,332 INFO L93 Difference]: Finished difference Result 29026 states and 31636 transitions. [2020-10-27 00:02:53,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 00:02:53,333 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 896 [2020-10-27 00:02:53,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:53,379 INFO L225 Difference]: With dead ends: 29026 [2020-10-27 00:02:53,379 INFO L226 Difference]: Without dead ends: 14648 [2020-10-27 00:02:53,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-27 00:02:53,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14648 states. [2020-10-27 00:02:53,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14648 to 14626. [2020-10-27 00:02:53,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14626 states. [2020-10-27 00:02:53,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14626 states to 14626 states and 15914 transitions. [2020-10-27 00:02:53,750 INFO L78 Accepts]: Start accepts. Automaton has 14626 states and 15914 transitions. Word has length 896 [2020-10-27 00:02:53,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:53,751 INFO L481 AbstractCegarLoop]: Abstraction has 14626 states and 15914 transitions. [2020-10-27 00:02:53,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:02:53,751 INFO L276 IsEmpty]: Start isEmpty. Operand 14626 states and 15914 transitions. [2020-10-27 00:02:53,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2020-10-27 00:02:53,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:53,779 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 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] [2020-10-27 00:02:53,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:02:53,780 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:53,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:53,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1832786790, now seen corresponding path program 1 times [2020-10-27 00:02:53,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:53,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308030314] [2020-10-27 00:02:53,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:54,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:54,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:55,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:58,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:59,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:59,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:59,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 989 [2020-10-27 00:02:59,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:02:59,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5111 [2020-10-27 00:02:59,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:59,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:59,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-27 00:02:59,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-27 00:02:59,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:59,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:59,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:59,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:59,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:59,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:59,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:02:59,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:59,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:59,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:59,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:59,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:59,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:59,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:59,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:59,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:02:59,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:59,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 00:02:59,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:59,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:59,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:59,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:59,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:59,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:02:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:59,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:59,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:59,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 00:02:59,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:59,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 00:02:59,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-27 00:02:59,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:59,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-27 00:02:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:59,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:59,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:59,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 00:02:59,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:59,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-27 00:02:59,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:59,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:59,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:59,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-27 00:02:59,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:59,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-27 00:02:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:59,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:00,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:00,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:03:00,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:00,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 00:03:00,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:00,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:00,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:03:00,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:00,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:00,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 690 [2020-10-27 00:03:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:00,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:00,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:00,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:03:00,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:00,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 00:03:00,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:00,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:00,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:03:00,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:00,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:00,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 800 [2020-10-27 00:03:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:00,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:00,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:00,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:03:00,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:00,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 00:03:00,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:00,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:00,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:03:00,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:00,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:00,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2075 backedges. 517 proven. 356 refuted. 0 times theorem prover too weak. 1202 trivial. 0 not checked. [2020-10-27 00:03:00,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308030314] [2020-10-27 00:03:00,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:00,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:00,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086491829] [2020-10-27 00:03:00,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:00,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:00,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:00,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:00,916 INFO L87 Difference]: Start difference. First operand 14626 states and 15914 transitions. Second operand 7 states. [2020-10-27 00:03:05,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:05,818 INFO L93 Difference]: Finished difference Result 29359 states and 31980 transitions. [2020-10-27 00:03:05,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:03:05,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 967 [2020-10-27 00:03:05,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:05,863 INFO L225 Difference]: With dead ends: 29359 [2020-10-27 00:03:05,864 INFO L226 Difference]: Without dead ends: 14983 [2020-10-27 00:03:05,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:03:05,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14983 states. [2020-10-27 00:03:06,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14983 to 14624. [2020-10-27 00:03:06,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14624 states. [2020-10-27 00:03:06,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14624 states to 14624 states and 15526 transitions. [2020-10-27 00:03:06,206 INFO L78 Accepts]: Start accepts. Automaton has 14624 states and 15526 transitions. Word has length 967 [2020-10-27 00:03:06,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:06,207 INFO L481 AbstractCegarLoop]: Abstraction has 14624 states and 15526 transitions. [2020-10-27 00:03:06,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:06,207 INFO L276 IsEmpty]: Start isEmpty. Operand 14624 states and 15526 transitions. [2020-10-27 00:03:06,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1080 [2020-10-27 00:03:06,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:06,239 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 00:03:06,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:03:06,239 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:06,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:06,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1105075297, now seen corresponding path program 1 times [2020-10-27 00:03:06,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:06,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333501007] [2020-10-27 00:03:06,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:06,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:07,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:09,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:09,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:11,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:11,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:11,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1099 [2020-10-27 00:03:11,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:03:11,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 00:03:11,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-27 00:03:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-27 00:03:11,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:11,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:11,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:11,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:11,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:11,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:11,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 00:03:11,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:11,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:11,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:11,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:11,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:12,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:12,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:12,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:12,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:03:12,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:12,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 00:03:12,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:12,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:12,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:12,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:12,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:03:12,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:03:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:12,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:12,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:12,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:03:12,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:12,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-27 00:03:12,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:12,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:12,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:12,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 00:03:12,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:12,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 00:03:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:12,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:12,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:12,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 00:03:12,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:12,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-27 00:03:12,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:12,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:12,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:12,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-27 00:03:12,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:12,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-10-27 00:03:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:12,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:12,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:12,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:03:12,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:12,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:03:12,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:12,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:12,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 00:03:12,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:12,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:12,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 777 [2020-10-27 00:03:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:12,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:13,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:13,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:03:13,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:13,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 00:03:13,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:13,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:13,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:03:13,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:13,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:13,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1895 backedges. 486 proven. 303 refuted. 0 times theorem prover too weak. 1106 trivial. 0 not checked. [2020-10-27 00:03:13,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333501007] [2020-10-27 00:03:13,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:13,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:13,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954686128] [2020-10-27 00:03:13,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:13,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:13,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:13,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:13,791 INFO L87 Difference]: Start difference. First operand 14624 states and 15526 transitions. Second operand 7 states. [2020-10-27 00:03:19,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:19,475 INFO L93 Difference]: Finished difference Result 31749 states and 33880 transitions. [2020-10-27 00:03:19,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:03:19,478 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1079 [2020-10-27 00:03:19,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:19,521 INFO L225 Difference]: With dead ends: 31749 [2020-10-27 00:03:19,522 INFO L226 Difference]: Without dead ends: 17375 [2020-10-27 00:03:19,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:03:19,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17375 states. [2020-10-27 00:03:19,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17375 to 17014. [2020-10-27 00:03:19,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17014 states. [2020-10-27 00:03:19,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17014 states to 17014 states and 18126 transitions. [2020-10-27 00:03:19,883 INFO L78 Accepts]: Start accepts. Automaton has 17014 states and 18126 transitions. Word has length 1079 [2020-10-27 00:03:19,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:19,884 INFO L481 AbstractCegarLoop]: Abstraction has 17014 states and 18126 transitions. [2020-10-27 00:03:19,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:19,884 INFO L276 IsEmpty]: Start isEmpty. Operand 17014 states and 18126 transitions. [2020-10-27 00:03:19,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2020-10-27 00:03:19,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:19,916 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-27 00:03:19,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:03:19,917 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:19,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:19,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1548061155, now seen corresponding path program 1 times [2020-10-27 00:03:19,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:19,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275999339] [2020-10-27 00:03:19,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:20,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:20,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:21,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:24,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:25,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:25,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1101 [2020-10-27 00:03:25,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:03:25,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-27 00:03:25,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:25,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:25,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-27 00:03:25,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-27 00:03:25,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:25,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:25,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:25,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:25,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:25,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:25,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:03:25,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:25,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:25,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:25,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:25,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:25,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:25,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:25,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:25,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:03:25,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:25,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:03:25,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:25,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:25,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:25,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:25,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:25,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:03:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:25,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:25,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:25,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 00:03:25,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:25,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:03:25,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:25,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:25,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:25,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:25,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:25,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-27 00:03:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:25,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:25,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:25,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 00:03:25,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:25,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 00:03:25,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:25,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:25,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:25,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-27 00:03:25,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:25,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-27 00:03:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:25,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:25,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:25,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:03:25,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:25,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 00:03:25,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:25,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:25,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:25,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-27 00:03:25,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:25,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-10-27 00:03:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:25,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:26,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:26,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:03:26,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:26,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-27 00:03:26,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:03:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:26,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:26,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1899 backedges. 590 proven. 143 refuted. 0 times theorem prover too weak. 1166 trivial. 0 not checked. [2020-10-27 00:03:26,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275999339] [2020-10-27 00:03:26,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:26,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:26,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872815271] [2020-10-27 00:03:26,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:26,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:26,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:26,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:26,961 INFO L87 Difference]: Start difference. First operand 17014 states and 18126 transitions. Second operand 7 states. [2020-10-27 00:03:31,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:31,575 INFO L93 Difference]: Finished difference Result 35479 states and 37990 transitions. [2020-10-27 00:03:31,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:03:31,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1081 [2020-10-27 00:03:31,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:31,618 INFO L225 Difference]: With dead ends: 35479 [2020-10-27 00:03:31,618 INFO L226 Difference]: Without dead ends: 18715 [2020-10-27 00:03:31,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:03:31,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18715 states. [2020-10-27 00:03:31,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18715 to 17349. [2020-10-27 00:03:31,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17349 states. [2020-10-27 00:03:31,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17349 states to 17349 states and 18413 transitions. [2020-10-27 00:03:31,991 INFO L78 Accepts]: Start accepts. Automaton has 17349 states and 18413 transitions. Word has length 1081 [2020-10-27 00:03:31,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:31,992 INFO L481 AbstractCegarLoop]: Abstraction has 17349 states and 18413 transitions. [2020-10-27 00:03:31,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:31,992 INFO L276 IsEmpty]: Start isEmpty. Operand 17349 states and 18413 transitions. [2020-10-27 00:03:32,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1097 [2020-10-27 00:03:32,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:32,027 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 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, 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, 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] [2020-10-27 00:03:32,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 00:03:32,027 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:32,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:32,028 INFO L82 PathProgramCache]: Analyzing trace with hash 16835789, now seen corresponding path program 1 times [2020-10-27 00:03:32,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:32,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600836739] [2020-10-27 00:03:32,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:32,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:32,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:36,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:36,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:37,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:37,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1116 [2020-10-27 00:03:37,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:03:37,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-27 00:03:37,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:37,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:37,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-27 00:03:37,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:03:37,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:37,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:37,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:37,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:37,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:37,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:37,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:03:37,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:37,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:37,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:37,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:37,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:37,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:37,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:37,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:37,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:03:37,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:37,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 00:03:37,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:37,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:37,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:37,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:37,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:37,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:03:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:37,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:38,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:38,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:03:38,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:38,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-27 00:03:38,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:38,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:38,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:38,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 00:03:38,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:38,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 00:03:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:38,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:38,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:38,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:03:38,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:38,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 00:03:38,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:38,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:38,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:38,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:03:38,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:38,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 00:03:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:38,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:38,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:38,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:03:38,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:38,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 00:03:38,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:38,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:38,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-27 00:03:38,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:38,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:38,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-27 00:03:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:38,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:38,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:38,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:03:38,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:38,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-27 00:03:38,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:38,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:38,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:03:38,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:38,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:39,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1931 backedges. 418 proven. 254 refuted. 0 times theorem prover too weak. 1259 trivial. 0 not checked. [2020-10-27 00:03:39,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600836739] [2020-10-27 00:03:39,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:39,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:39,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216572399] [2020-10-27 00:03:39,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:39,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:39,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:39,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:39,801 INFO L87 Difference]: Start difference. First operand 17349 states and 18413 transitions. Second operand 7 states. [2020-10-27 00:03:44,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:44,434 INFO L93 Difference]: Finished difference Result 34799 states and 36942 transitions. [2020-10-27 00:03:44,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:03:44,436 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1096 [2020-10-27 00:03:44,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:44,467 INFO L225 Difference]: With dead ends: 34799 [2020-10-27 00:03:44,467 INFO L226 Difference]: Without dead ends: 17700 [2020-10-27 00:03:44,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:03:44,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17700 states. [2020-10-27 00:03:44,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17700 to 17688. [2020-10-27 00:03:44,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17688 states. [2020-10-27 00:03:44,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17688 states to 17688 states and 18756 transitions. [2020-10-27 00:03:44,862 INFO L78 Accepts]: Start accepts. Automaton has 17688 states and 18756 transitions. Word has length 1096 [2020-10-27 00:03:44,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:44,863 INFO L481 AbstractCegarLoop]: Abstraction has 17688 states and 18756 transitions. [2020-10-27 00:03:44,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:44,864 INFO L276 IsEmpty]: Start isEmpty. Operand 17688 states and 18756 transitions. [2020-10-27 00:03:45,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1099 [2020-10-27 00:03:45,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:45,107 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 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, 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, 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] [2020-10-27 00:03:45,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 00:03:45,107 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:45,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:45,108 INFO L82 PathProgramCache]: Analyzing trace with hash -593621239, now seen corresponding path program 1 times [2020-10-27 00:03:45,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:45,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365276336] [2020-10-27 00:03:45,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:45,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:45,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:49,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:49,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:50,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:50,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1118 [2020-10-27 00:03:50,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:03:50,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5137 [2020-10-27 00:03:50,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:50,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:50,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-27 00:03:50,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:03:50,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:50,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:50,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:50,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:50,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:50,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:50,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:03:50,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:50,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:50,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:50,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:50,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:50,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:50,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:50,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:50,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:03:50,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:50,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 00:03:50,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:50,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:50,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:50,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:50,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:50,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:03:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:51,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:51,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:51,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 00:03:51,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:51,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-27 00:03:51,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:51,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:51,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:51,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-27 00:03:51,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:51,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-27 00:03:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:51,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:51,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:51,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:03:51,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:51,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-27 00:03:51,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:51,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:51,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:51,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:03:51,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:51,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-27 00:03:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:51,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:51,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:51,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:03:51,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:51,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 00:03:51,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:51,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:51,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-27 00:03:51,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:51,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:51,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-27 00:03:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:51,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:51,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:51,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:03:51,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:51,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 00:03:51,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:51,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:51,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:03:51,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:51,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1935 backedges. 418 proven. 254 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2020-10-27 00:03:52,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365276336] [2020-10-27 00:03:52,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:52,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:52,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96727272] [2020-10-27 00:03:52,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:52,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:52,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:52,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:52,790 INFO L87 Difference]: Start difference. First operand 17688 states and 18756 transitions. Second operand 7 states. [2020-10-27 00:03:57,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:57,933 INFO L93 Difference]: Finished difference Result 38175 states and 40828 transitions. [2020-10-27 00:03:57,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:03:57,935 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1098 [2020-10-27 00:03:57,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:57,983 INFO L225 Difference]: With dead ends: 38175 [2020-10-27 00:03:57,984 INFO L226 Difference]: Without dead ends: 20737 [2020-10-27 00:03:58,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:03:58,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20737 states. [2020-10-27 00:03:58,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20737 to 20061. [2020-10-27 00:03:58,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20061 states. [2020-10-27 00:03:58,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20061 states to 20061 states and 21202 transitions. [2020-10-27 00:03:58,357 INFO L78 Accepts]: Start accepts. Automaton has 20061 states and 21202 transitions. Word has length 1098 [2020-10-27 00:03:58,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:58,358 INFO L481 AbstractCegarLoop]: Abstraction has 20061 states and 21202 transitions. [2020-10-27 00:03:58,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:58,358 INFO L276 IsEmpty]: Start isEmpty. Operand 20061 states and 21202 transitions. [2020-10-27 00:03:58,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1144 [2020-10-27 00:03:58,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:58,392 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:03:58,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 00:03:58,392 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:58,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:58,394 INFO L82 PathProgramCache]: Analyzing trace with hash 225995518, now seen corresponding path program 1 times [2020-10-27 00:03:58,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:58,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554064752] [2020-10-27 00:03:58,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:58,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:00,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:02,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:03,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:03,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1165 [2020-10-27 00:04:03,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:04:03,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-27 00:04:03,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:03,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:03,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-27 00:04:03,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 00:04:03,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:04,028 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:04:04,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:04,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:04,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:04,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:04,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:04,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:04:04,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:04,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:04,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:04,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:04,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:04,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:04,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:04,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:04,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:04:04,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:04,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 00:04:04,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:04,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:04,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:04,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:04,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:04,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:04:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:04,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:04,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:04,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:04:04,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:04,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:04:04,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:04,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:04,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:04:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:04,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:04,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:04,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:04:04,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:04,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:04:04,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:04,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:04,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:04:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:04,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:04,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:04,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:04:04,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:04,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 00:04:04,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:04,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:04,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:04,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:04,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:04,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:04:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:04,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:04,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:04,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:04:04,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:04,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-27 00:04:04,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:04,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:04,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:04,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 00:04:04,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:04,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-27 00:04:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:04,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:04,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:04,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:04:04,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:04,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-27 00:04:04,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:04,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:04,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:04,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 00:04:04,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:07,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2313 backedges. 1012 proven. 2 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2020-10-27 00:04:07,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554064752] [2020-10-27 00:04:07,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:07,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:04:07,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747666909] [2020-10-27 00:04:07,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:04:07,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:07,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:04:07,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:04:07,144 INFO L87 Difference]: Start difference. First operand 20061 states and 21202 transitions. Second operand 8 states.