/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem12_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:16:52,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:16:52,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:16:52,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:16:52,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:16:52,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:16:52,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:16:52,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:16:52,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:16:52,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:16:52,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:16:52,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:16:52,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:16:52,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:16:52,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:16:52,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:16:52,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:16:52,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:16:52,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:16:52,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:16:52,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:16:52,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:16:52,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:16:52,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:16:52,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:16:52,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:16:52,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:16:52,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:16:52,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:16:52,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:16:52,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:16:52,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:16:52,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:16:52,522 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:16:52,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:16:52,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:16:52,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:16:52,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:16:52,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:16:52,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:16:52,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:16:52,549 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:16:52,584 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:16:52,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:16:52,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:16:52,587 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:16:52,588 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:16:52,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:16:52,588 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:16:52,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:16:52,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:16:52,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:16:52,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:16:52,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:16:52,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:16:52,591 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:16:52,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:16:52,591 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:16:52,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:16:52,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:16:52,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:16:52,592 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:16:52,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:16:52,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:16:52,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:16:52,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:16:52,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:16:52,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:16:52,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:16:52,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:16:52,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:16:52,594 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:16:53,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:16:53,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:16:53,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:16:53,043 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:16:53,044 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:16:53,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label16.c [2020-10-28 12:16:53,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cefa22b2/b1e550d84d0442a695bed6cd44b86200/FLAGae9b9ad42 [2020-10-28 12:16:54,118 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:16:54,119 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label16.c [2020-10-28 12:16:54,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cefa22b2/b1e550d84d0442a695bed6cd44b86200/FLAGae9b9ad42 [2020-10-28 12:16:54,525 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cefa22b2/b1e550d84d0442a695bed6cd44b86200 [2020-10-28 12:16:54,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:16:54,536 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:16:54,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:16:54,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:16:54,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:16:54,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:16:54" (1/1) ... [2020-10-28 12:16:54,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ebb2c93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:16:54, skipping insertion in model container [2020-10-28 12:16:54,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:16:54" (1/1) ... [2020-10-28 12:16:54,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:16:54,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:16:56,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:16:56,317 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:16:57,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:16:57,228 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:16:57,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:16:57 WrapperNode [2020-10-28 12:16:57,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:16:57,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:16:57,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:16:57,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:16:57,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:16:57" (1/1) ... [2020-10-28 12:16:57,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:16:57" (1/1) ... [2020-10-28 12:16:57,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:16:57" (1/1) ... [2020-10-28 12:16:57,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:16:57" (1/1) ... [2020-10-28 12:16:57,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:16:57" (1/1) ... [2020-10-28 12:16:57,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:16:57" (1/1) ... [2020-10-28 12:16:57,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:16:57" (1/1) ... [2020-10-28 12:16:57,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:16:57,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:16:57,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:16:57,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:16:57,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:16:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:16:57,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:16:57,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:16:57,695 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:16:57,696 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:16:57,696 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:16:57,696 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:16:57,696 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:16:57,696 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:16:57,696 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:16:57,697 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:16:57,697 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:16:57,697 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:16:57,697 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:16:57,697 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:16:57,698 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:16:57,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:16:57,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:16:57,698 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:16:57,698 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:16:57,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:16:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:16:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:16:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:16:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:16:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:17:03,076 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:17:03,077 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:17:03,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:17:03 BoogieIcfgContainer [2020-10-28 12:17:03,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:17:03,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:17:03,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:17:03,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:17:03,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:16:54" (1/3) ... [2020-10-28 12:17:03,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7615d702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:17:03, skipping insertion in model container [2020-10-28 12:17:03,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:16:57" (2/3) ... [2020-10-28 12:17:03,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7615d702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:17:03, skipping insertion in model container [2020-10-28 12:17:03,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:17:03" (3/3) ... [2020-10-28 12:17:03,099 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label16.c [2020-10-28 12:17:03,112 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:17:03,118 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:17:03,132 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:17:03,166 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:17:03,167 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:17:03,167 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:17:03,167 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:17:03,167 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:17:03,167 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:17:03,167 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:17:03,168 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:17:03,212 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:17:03,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 12:17:03,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:17:03,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:17:03,231 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:17:03,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:17:03,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1536496260, now seen corresponding path program 1 times [2020-10-28 12:17:03,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:17:03,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21882996] [2020-10-28 12:17:03,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:17:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:03,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:04,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:04,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:17:04,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:04,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 756 [2020-10-28 12:17:04,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:04,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:04,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:17:04,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:17:04,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:17:04,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:17:04,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:17:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:04,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:04,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:04,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:17:04,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:04,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 12:17:04,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:04,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:04,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:17:04,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:04,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:17:04,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:17:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:17:04,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21882996] [2020-10-28 12:17:04,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:17:04,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:17:04,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175797630] [2020-10-28 12:17:04,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:17:04,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:17:04,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:17:04,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:17:04,497 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-28 12:17:14,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:17:14,932 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-28 12:17:14,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:17:14,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-10-28 12:17:14,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:17:14,970 INFO L225 Difference]: With dead ends: 2476 [2020-10-28 12:17:14,971 INFO L226 Difference]: Without dead ends: 1569 [2020-10-28 12:17:14,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:17:15,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-28 12:17:15,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-28 12:17:15,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-28 12:17:15,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2522 transitions. [2020-10-28 12:17:15,178 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2522 transitions. Word has length 72 [2020-10-28 12:17:15,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:17:15,179 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2522 transitions. [2020-10-28 12:17:15,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:17:15,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2522 transitions. [2020-10-28 12:17:15,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-28 12:17:15,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:17:15,200 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:17:15,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:17:15,203 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:17:15,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:17:15,204 INFO L82 PathProgramCache]: Analyzing trace with hash 777051258, now seen corresponding path program 1 times [2020-10-28 12:17:15,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:17:15,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811708300] [2020-10-28 12:17:15,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:17:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:15,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:15,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:16,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:16,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:16,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-28 12:17:16,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:17:16,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1642 [2020-10-28 12:17:16,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:16,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:16,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:17:16,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:17:16,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:17:16,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:17:17,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:17:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:17,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:17,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:17,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:17:17,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:17,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:17:17,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:17,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:17,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:17:17,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:17,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:17:17,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:17:17,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:17:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:17,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:17,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:17,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:17:17,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:17,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 12:17:17,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:17,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:17,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:17:17,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:17,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:17:17,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:17:17,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811708300] [2020-10-28 12:17:17,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:17:17,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:17:17,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709917478] [2020-10-28 12:17:17,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:17:17,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:17:17,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:17:17,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:17:17,374 INFO L87 Difference]: Start difference. First operand 1554 states and 2522 transitions. Second operand 5 states. [2020-10-28 12:17:27,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:17:27,391 INFO L93 Difference]: Finished difference Result 4673 states and 7650 transitions. [2020-10-28 12:17:27,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:17:27,396 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-28 12:17:27,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:17:27,415 INFO L225 Difference]: With dead ends: 4673 [2020-10-28 12:17:27,415 INFO L226 Difference]: Without dead ends: 3125 [2020-10-28 12:17:27,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:17:27,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-28 12:17:27,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3112. [2020-10-28 12:17:27,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3112 states. [2020-10-28 12:17:27,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3112 states to 3112 states and 4442 transitions. [2020-10-28 12:17:27,525 INFO L78 Accepts]: Start accepts. Automaton has 3112 states and 4442 transitions. Word has length 147 [2020-10-28 12:17:27,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:17:27,526 INFO L481 AbstractCegarLoop]: Abstraction has 3112 states and 4442 transitions. [2020-10-28 12:17:27,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:17:27,526 INFO L276 IsEmpty]: Start isEmpty. Operand 3112 states and 4442 transitions. [2020-10-28 12:17:27,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-28 12:17:27,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:17:27,529 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:17:27,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:17:27,530 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:17:27,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:17:27,531 INFO L82 PathProgramCache]: Analyzing trace with hash -2035512334, now seen corresponding path program 1 times [2020-10-28 12:17:27,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:17:27,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31565613] [2020-10-28 12:17:27,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:17:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:27,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:27,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:28,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:29,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:29,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 12:17:29,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:17:29,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1443 [2020-10-28 12:17:29,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:29,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:29,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:17:29,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:17:29,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 12:17:29,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:17:29,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:17:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:29,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:29,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:29,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:17:29,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:29,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:17:29,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:29,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:29,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:17:29,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:29,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:17:29,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:29,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:17:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:29,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:29,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:29,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 12:17:29,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:29,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-28 12:17:29,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:29,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:29,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:17:29,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:17:29,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:17:29,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:29,474 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:17:29,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31565613] [2020-10-28 12:17:29,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:17:29,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:17:29,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869902338] [2020-10-28 12:17:29,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:17:29,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:17:29,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:17:29,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:17:29,481 INFO L87 Difference]: Start difference. First operand 3112 states and 4442 transitions. Second operand 7 states. [2020-10-28 12:17:43,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:17:43,150 INFO L93 Difference]: Finished difference Result 9578 states and 14363 transitions. [2020-10-28 12:17:43,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:17:43,151 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-10-28 12:17:43,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:17:43,202 INFO L225 Difference]: With dead ends: 9578 [2020-10-28 12:17:43,202 INFO L226 Difference]: Without dead ends: 6472 [2020-10-28 12:17:43,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:17:43,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6472 states. [2020-10-28 12:17:43,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6472 to 6336. [2020-10-28 12:17:43,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6336 states. [2020-10-28 12:17:43,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6336 states to 6336 states and 8215 transitions. [2020-10-28 12:17:43,488 INFO L78 Accepts]: Start accepts. Automaton has 6336 states and 8215 transitions. Word has length 151 [2020-10-28 12:17:43,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:17:43,490 INFO L481 AbstractCegarLoop]: Abstraction has 6336 states and 8215 transitions. [2020-10-28 12:17:43,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:17:43,490 INFO L276 IsEmpty]: Start isEmpty. Operand 6336 states and 8215 transitions. [2020-10-28 12:17:43,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 12:17:43,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:17:43,495 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:17:43,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:17:43,496 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:17:43,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:17:43,500 INFO L82 PathProgramCache]: Analyzing trace with hash 95699750, now seen corresponding path program 1 times [2020-10-28 12:17:43,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:17:43,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146512266] [2020-10-28 12:17:43,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:17:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:43,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:43,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:44,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:44,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 12:17:44,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:17:44,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-10-28 12:17:44,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:44,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:44,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:17:44,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:17:44,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:17:44,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:44,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:17:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:44,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:44,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:44,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:17:44,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:44,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 12:17:44,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:44,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:17:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:17:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:17:44,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:44,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:17:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:44,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:44,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:17:44,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 12:17:44,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:17:44,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 12:17:44,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:17:44,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:17:44,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:17:44,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:17:44,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:17:44,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:17:45,014 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:17:45,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146512266] [2020-10-28 12:17:45,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:17:45,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:17:45,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513853533] [2020-10-28 12:17:45,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:17:45,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:17:45,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:17:45,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:17:45,017 INFO L87 Difference]: Start difference. First operand 6336 states and 8215 transitions. Second operand 7 states. [2020-10-28 12:17:59,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:17:59,041 INFO L93 Difference]: Finished difference Result 19212 states and 25347 transitions. [2020-10-28 12:17:59,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:17:59,043 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-10-28 12:17:59,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:17:59,109 INFO L225 Difference]: With dead ends: 19212 [2020-10-28 12:17:59,109 INFO L226 Difference]: Without dead ends: 12882 [2020-10-28 12:17:59,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:17:59,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12882 states. [2020-10-28 12:17:59,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12882 to 11227. [2020-10-28 12:17:59,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11227 states. [2020-10-28 12:17:59,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11227 states to 11227 states and 14179 transitions. [2020-10-28 12:17:59,475 INFO L78 Accepts]: Start accepts. Automaton has 11227 states and 14179 transitions. Word has length 157 [2020-10-28 12:17:59,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:17:59,475 INFO L481 AbstractCegarLoop]: Abstraction has 11227 states and 14179 transitions. [2020-10-28 12:17:59,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:17:59,475 INFO L276 IsEmpty]: Start isEmpty. Operand 11227 states and 14179 transitions. [2020-10-28 12:17:59,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-28 12:17:59,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:17:59,480 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:17:59,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:17:59,480 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:17:59,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:17:59,486 INFO L82 PathProgramCache]: Analyzing trace with hash -2049576172, now seen corresponding path program 1 times [2020-10-28 12:17:59,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:17:59,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447868686] [2020-10-28 12:17:59,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:17:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:17:59,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:17:59,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:01,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:01,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-28 12:18:01,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:18:01,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2274 [2020-10-28 12:18:01,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:01,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:01,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:18:01,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:18:01,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:18:01,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:18:01,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:18:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:01,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:01,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:01,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:18:01,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:01,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:18:01,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:01,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:01,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:18:01,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:01,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:18:01,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:02,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:18:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:02,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:02,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:02,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:18:02,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:02,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-28 12:18:02,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:02,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:02,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:18:02,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:18:02,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:18:02,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:18:03,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447868686] [2020-10-28 12:18:03,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:18:03,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:18:03,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664434745] [2020-10-28 12:18:03,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:18:03,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:18:03,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:18:03,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:18:03,007 INFO L87 Difference]: Start difference. First operand 11227 states and 14179 transitions. Second operand 7 states. [2020-10-28 12:18:16,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:18:16,604 INFO L93 Difference]: Finished difference Result 23559 states and 29759 transitions. [2020-10-28 12:18:16,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:18:16,607 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2020-10-28 12:18:16,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:18:16,655 INFO L225 Difference]: With dead ends: 23559 [2020-10-28 12:18:16,655 INFO L226 Difference]: Without dead ends: 12338 [2020-10-28 12:18:16,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:18:16,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12338 states. [2020-10-28 12:18:16,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12338 to 12152. [2020-10-28 12:18:16,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12152 states. [2020-10-28 12:18:16,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12152 states to 12152 states and 15189 transitions. [2020-10-28 12:18:16,998 INFO L78 Accepts]: Start accepts. Automaton has 12152 states and 15189 transitions. Word has length 220 [2020-10-28 12:18:16,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:18:16,999 INFO L481 AbstractCegarLoop]: Abstraction has 12152 states and 15189 transitions. [2020-10-28 12:18:16,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:18:16,999 INFO L276 IsEmpty]: Start isEmpty. Operand 12152 states and 15189 transitions. [2020-10-28 12:18:17,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-28 12:18:17,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:18:17,005 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:18:17,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:18:17,006 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:18:17,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:18:17,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1051190320, now seen corresponding path program 1 times [2020-10-28 12:18:17,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:18:17,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562563363] [2020-10-28 12:18:17,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:18:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:17,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:17,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:17,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:18,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:18,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 12:18:18,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:18:18,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1424 [2020-10-28 12:18:18,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:18,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:18,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:18:18,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:18:18,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:18:18,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:18,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:18:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:18,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:18,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:18,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:18:18,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:18,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:18:18,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:18,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:18,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:18:18,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:18,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:18:18,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:18,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:18:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:18,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:18,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:18,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:18:18,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:18,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 12:18:18,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:18,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:18:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:18:18,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:18,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:18:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:18,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:19,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:19,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:18:19,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:19,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-28 12:18:19,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:19,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:19,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:18:19,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:18:19,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:18:19,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:18:19,420 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:18:19,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562563363] [2020-10-28 12:18:19,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:18:19,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:18:19,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685683400] [2020-10-28 12:18:19,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:18:19,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:18:19,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:18:19,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:18:19,423 INFO L87 Difference]: Start difference. First operand 12152 states and 15189 transitions. Second operand 8 states. [2020-10-28 12:18:42,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:18:42,674 INFO L93 Difference]: Finished difference Result 36371 states and 48884 transitions. [2020-10-28 12:18:42,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:18:42,677 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 260 [2020-10-28 12:18:42,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:18:42,758 INFO L225 Difference]: With dead ends: 36371 [2020-10-28 12:18:42,759 INFO L226 Difference]: Without dead ends: 22627 [2020-10-28 12:18:42,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:18:42,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22627 states. [2020-10-28 12:18:43,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22627 to 22509. [2020-10-28 12:18:43,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22509 states. [2020-10-28 12:18:43,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22509 states to 22509 states and 28109 transitions. [2020-10-28 12:18:43,389 INFO L78 Accepts]: Start accepts. Automaton has 22509 states and 28109 transitions. Word has length 260 [2020-10-28 12:18:43,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:18:43,389 INFO L481 AbstractCegarLoop]: Abstraction has 22509 states and 28109 transitions. [2020-10-28 12:18:43,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:18:43,390 INFO L276 IsEmpty]: Start isEmpty. Operand 22509 states and 28109 transitions. [2020-10-28 12:18:43,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-28 12:18:43,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:18:43,397 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:18:43,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:18:43,398 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:18:43,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:18:43,401 INFO L82 PathProgramCache]: Analyzing trace with hash 262951212, now seen corresponding path program 1 times [2020-10-28 12:18:43,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:18:43,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827108618] [2020-10-28 12:18:43,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:18:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:43,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:43,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:45,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:45,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-28 12:18:45,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:18:45,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1816 [2020-10-28 12:18:45,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:45,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:45,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:18:45,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:18:45,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 12:18:45,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:45,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:18:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:45,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:45,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:45,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:18:45,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:45,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:18:45,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:45,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:45,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:18:45,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:45,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:18:45,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:18:45,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:18:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:45,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:45,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:45,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:18:45,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:45,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-28 12:18:45,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:45,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:45,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:18:45,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:18:45,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:18:45,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:18:45,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:18:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:18:45,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:18:46,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:18:46,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:18:46,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:18:46,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-28 12:18:46,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:18:46,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:18:46,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:18:46,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:18:46,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:18:46,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:18:46,278 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:18:46,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827108618] [2020-10-28 12:18:46,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:18:46,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:18:46,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749823774] [2020-10-28 12:18:46,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:18:46,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:18:46,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:18:46,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:18:46,283 INFO L87 Difference]: Start difference. First operand 22509 states and 28109 transitions. Second operand 7 states. [2020-10-28 12:19:08,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:19:08,230 INFO L93 Difference]: Finished difference Result 63554 states and 84217 transitions. [2020-10-28 12:19:08,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:19:08,235 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 306 [2020-10-28 12:19:08,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:19:08,406 INFO L225 Difference]: With dead ends: 63554 [2020-10-28 12:19:08,406 INFO L226 Difference]: Without dead ends: 41818 [2020-10-28 12:19:08,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:19:08,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41818 states. [2020-10-28 12:19:09,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41818 to 40892. [2020-10-28 12:19:09,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40892 states. [2020-10-28 12:19:09,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40892 states to 40892 states and 52333 transitions. [2020-10-28 12:19:09,650 INFO L78 Accepts]: Start accepts. Automaton has 40892 states and 52333 transitions. Word has length 306 [2020-10-28 12:19:09,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:19:09,650 INFO L481 AbstractCegarLoop]: Abstraction has 40892 states and 52333 transitions. [2020-10-28 12:19:09,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:19:09,651 INFO L276 IsEmpty]: Start isEmpty. Operand 40892 states and 52333 transitions. [2020-10-28 12:19:09,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-28 12:19:09,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:19:09,658 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:19:09,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:19:09,658 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:19:09,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:19:09,659 INFO L82 PathProgramCache]: Analyzing trace with hash -936871756, now seen corresponding path program 1 times [2020-10-28 12:19:09,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:19:09,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669185990] [2020-10-28 12:19:09,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:19:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:09,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:09,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:10,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:12,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:12,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-28 12:19:12,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:19:12,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2711 [2020-10-28 12:19:12,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:12,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:12,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:19:12,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:19:12,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-28 12:19:12,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:12,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:19:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:12,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:12,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:12,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:19:12,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:12,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:19:12,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:12,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:12,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:19:12,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:12,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:19:12,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:12,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:19:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:12,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:13,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:13,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:19:13,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:13,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-28 12:19:13,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:13,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:13,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:19:13,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:13,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:19:13,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:13,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:19:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:13,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:13,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:13,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:13,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:19:13,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:19:13,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-28 12:19:13,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:13,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:13,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:19:13,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:13,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:19:13,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:13,585 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-28 12:19:13,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669185990] [2020-10-28 12:19:13,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:19:13,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:19:13,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473837161] [2020-10-28 12:19:13,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:19:13,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:19:13,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:19:13,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:19:13,588 INFO L87 Difference]: Start difference. First operand 40892 states and 52333 transitions. Second operand 5 states. [2020-10-28 12:19:35,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:19:35,544 INFO L93 Difference]: Finished difference Result 98963 states and 130230 transitions. [2020-10-28 12:19:35,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:19:35,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-10-28 12:19:35,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:19:35,777 INFO L225 Difference]: With dead ends: 98963 [2020-10-28 12:19:35,778 INFO L226 Difference]: Without dead ends: 58051 [2020-10-28 12:19:35,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:19:35,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58051 states. [2020-10-28 12:19:37,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58051 to 57240. [2020-10-28 12:19:37,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57240 states. [2020-10-28 12:19:37,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57240 states to 57240 states and 74389 transitions. [2020-10-28 12:19:37,509 INFO L78 Accepts]: Start accepts. Automaton has 57240 states and 74389 transitions. Word has length 310 [2020-10-28 12:19:37,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:19:37,512 INFO L481 AbstractCegarLoop]: Abstraction has 57240 states and 74389 transitions. [2020-10-28 12:19:37,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:19:37,512 INFO L276 IsEmpty]: Start isEmpty. Operand 57240 states and 74389 transitions. [2020-10-28 12:19:37,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-28 12:19:37,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:19:37,520 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:19:37,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:19:37,520 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:19:37,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:19:37,521 INFO L82 PathProgramCache]: Analyzing trace with hash 908351090, now seen corresponding path program 1 times [2020-10-28 12:19:37,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:19:37,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031269043] [2020-10-28 12:19:37,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:19:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:37,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:38,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:38,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:40,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:40,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-28 12:19:40,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:19:40,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2583 [2020-10-28 12:19:40,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:40,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:40,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:19:40,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:19:40,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-28 12:19:40,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:40,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:19:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:40,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:40,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:40,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:19:40,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:40,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:19:40,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:40,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:40,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:19:40,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:40,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:19:40,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:19:40,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:19:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:40,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:40,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:40,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:19:40,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:19:40,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 12:19:40,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:40,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:40,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:19:40,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:19:40,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:19:40,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:40,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:19:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:19:41,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:41,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:19:41,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:19:41,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:19:41,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:19:41,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-28 12:19:41,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:19:41,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:19:41,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:19:41,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:19:41,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:19:41,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:19:41,492 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 149 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:19:41,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031269043] [2020-10-28 12:19:41,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:19:41,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:19:41,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698330140] [2020-10-28 12:19:41,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:19:41,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:19:41,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:19:41,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:19:41,496 INFO L87 Difference]: Start difference. First operand 57240 states and 74389 transitions. Second operand 6 states. [2020-10-28 12:20:05,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:20:05,465 INFO L93 Difference]: Finished difference Result 139681 states and 188141 transitions. [2020-10-28 12:20:05,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:20:05,468 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 311 [2020-10-28 12:20:05,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:20:05,824 INFO L225 Difference]: With dead ends: 139681 [2020-10-28 12:20:05,824 INFO L226 Difference]: Without dead ends: 83214 [2020-10-28 12:20:05,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:20:06,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83214 states. [2020-10-28 12:20:08,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83214 to 80069. [2020-10-28 12:20:08,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80069 states. [2020-10-28 12:20:09,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80069 states to 80069 states and 103159 transitions. [2020-10-28 12:20:09,172 INFO L78 Accepts]: Start accepts. Automaton has 80069 states and 103159 transitions. Word has length 311 [2020-10-28 12:20:09,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:20:09,173 INFO L481 AbstractCegarLoop]: Abstraction has 80069 states and 103159 transitions. [2020-10-28 12:20:09,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:20:09,173 INFO L276 IsEmpty]: Start isEmpty. Operand 80069 states and 103159 transitions. [2020-10-28 12:20:09,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-28 12:20:09,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:20:09,182 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:20:09,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:20:09,183 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:20:09,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:20:09,183 INFO L82 PathProgramCache]: Analyzing trace with hash -2119951244, now seen corresponding path program 1 times [2020-10-28 12:20:09,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:20:09,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414334378] [2020-10-28 12:20:09,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:20:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:09,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:10,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:10,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-28 12:20:10,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:10,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 884 [2020-10-28 12:20:10,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:10,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:10,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:20:10,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-28 12:20:10,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:20:10,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:10,424 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:20:10,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:20:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:10,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:10,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:10,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:20:10,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:10,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 12:20:10,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:10,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:10,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:20:10,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:10,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:20:10,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:20:10,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:20:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:10,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:10,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:10,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:20:10,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:10,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 12:20:10,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:10,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:10,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:20:10,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:10,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:20:10,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:10,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:20:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:10,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:10,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:10,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:20:10,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:10,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 12:20:10,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:10,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:10,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:20:10,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:10,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:20:10,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:20:11,088 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-28 12:20:11,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414334378] [2020-10-28 12:20:11,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:20:11,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:20:11,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777539802] [2020-10-28 12:20:11,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:20:11,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:20:11,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:20:11,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:20:11,091 INFO L87 Difference]: Start difference. First operand 80069 states and 103159 transitions. Second operand 6 states. [2020-10-28 12:20:11,259 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 12:20:13,359 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66