/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:12:39,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:12:39,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:12:39,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:12:39,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:12:39,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:12:39,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:12:39,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:12:39,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:12:39,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:12:39,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:12:39,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:12:39,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:12:39,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:12:39,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:12:39,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:12:39,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:12:39,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:12:39,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:12:39,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:12:39,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:12:39,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:12:39,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:12:39,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:12:39,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:12:39,498 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:12:39,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:12:39,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:12:39,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:12:39,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:12:39,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:12:39,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:12:39,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:12:39,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:12:39,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:12:39,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:12:39,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:12:39,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:12:39,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:12:39,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:12:39,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:12:39,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 05:12:39,568 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:12:39,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:12:39,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:12:39,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:12:39,573 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:12:39,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:12:39,573 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:12:39,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:12:39,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:12:39,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:12:39,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:12:39,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:12:39,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:12:39,576 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:12:39,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:12:39,576 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:12:39,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:12:39,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:12:39,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:12:39,577 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:12:39,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:12:39,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:12:39,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:12:39,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:12:39,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:12:39,578 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:12:39,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:12:39,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:12:39,579 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:12:39,579 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:12:40,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:12:40,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:12:40,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:12:40,059 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:12:40,060 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:12:40,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label40.c [2020-10-29 05:12:40,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c34285379/884b1a1e3b9641ceab891180ea9acce8/FLAG4ae9d6bf3 [2020-10-29 05:12:41,228 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:12:41,229 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label40.c [2020-10-29 05:12:41,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c34285379/884b1a1e3b9641ceab891180ea9acce8/FLAG4ae9d6bf3 [2020-10-29 05:12:41,567 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c34285379/884b1a1e3b9641ceab891180ea9acce8 [2020-10-29 05:12:41,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:12:41,580 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:12:41,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:12:41,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:12:41,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:12:41,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:12:41" (1/1) ... [2020-10-29 05:12:41,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13f78def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:41, skipping insertion in model container [2020-10-29 05:12:41,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:12:41" (1/1) ... [2020-10-29 05:12:41,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:12:41,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:12:43,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:12:43,259 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:12:43,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:12:44,019 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:12:44,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:44 WrapperNode [2020-10-29 05:12:44,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:12:44,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:12:44,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:12:44,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:12:44,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:44" (1/1) ... [2020-10-29 05:12:44,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:44" (1/1) ... [2020-10-29 05:12:44,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:44" (1/1) ... [2020-10-29 05:12:44,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:44" (1/1) ... [2020-10-29 05:12:44,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:44" (1/1) ... [2020-10-29 05:12:44,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:44" (1/1) ... [2020-10-29 05:12:44,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:44" (1/1) ... [2020-10-29 05:12:44,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:12:44,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:12:44,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:12:44,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:12:44,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:12:44,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:12:44,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:12:44,502 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:12:44,502 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:12:44,502 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:12:44,502 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:12:44,502 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:12:44,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:12:44,503 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:12:44,503 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:12:44,503 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:12:44,503 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:12:44,504 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:12:44,504 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:12:44,504 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:12:44,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:12:44,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:12:44,504 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:12:44,505 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:12:44,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:12:44,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:12:44,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:12:44,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:12:44,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:12:44,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:12:51,670 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:12:51,671 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:12:51,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:12:51 BoogieIcfgContainer [2020-10-29 05:12:51,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:12:51,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:12:51,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:12:51,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:12:51,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:12:41" (1/3) ... [2020-10-29 05:12:51,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c2652ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:12:51, skipping insertion in model container [2020-10-29 05:12:51,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:44" (2/3) ... [2020-10-29 05:12:51,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c2652ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:12:51, skipping insertion in model container [2020-10-29 05:12:51,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:12:51" (3/3) ... [2020-10-29 05:12:51,689 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label40.c [2020-10-29 05:12:51,701 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:12:51,708 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:12:51,724 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:12:51,764 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:12:51,764 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:12:51,765 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:12:51,765 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:12:51,765 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:12:51,765 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:12:51,765 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:12:51,765 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:12:51,804 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-29 05:12:51,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2020-10-29 05:12:51,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:12:51,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:12:51,870 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:12:51,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:12:51,878 INFO L82 PathProgramCache]: Analyzing trace with hash 875460724, now seen corresponding path program 1 times [2020-10-29 05:12:51,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:12:51,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7722842] [2020-10-29 05:12:51,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:12:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:53,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:57,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:57,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 792 [2020-10-29 05:12:57,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:57,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5139 [2020-10-29 05:12:57,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:57,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:57,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:12:57,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:12:57,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 783 [2020-10-29 05:12:57,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:12:58,945 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:12:58,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:12:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:58,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:59,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:59,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:12:59,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:59,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 05:12:59,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:59,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:59,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:12:59,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:12:59,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:12:59,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:12:59,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:12:59,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7722842] [2020-10-29 05:12:59,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:12:59,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:12:59,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144339718] [2020-10-29 05:12:59,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:12:59,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:12:59,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:12:59,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:12:59,894 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-29 05:13:00,160 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:13:15,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:13:15,049 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-29 05:13:15,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:13:15,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 776 [2020-10-29 05:13:15,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:13:15,109 INFO L225 Difference]: With dead ends: 2677 [2020-10-29 05:13:15,109 INFO L226 Difference]: Without dead ends: 1703 [2020-10-29 05:13:15,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:13:15,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-29 05:13:15,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-29 05:13:15,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-29 05:13:15,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 3030 transitions. [2020-10-29 05:13:15,346 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 3030 transitions. Word has length 776 [2020-10-29 05:13:15,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:13:15,350 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 3030 transitions. [2020-10-29 05:13:15,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:13:15,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 3030 transitions. [2020-10-29 05:13:15,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2020-10-29 05:13:15,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:13:15,386 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:13:15,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:13:15,388 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:13:15,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:13:15,389 INFO L82 PathProgramCache]: Analyzing trace with hash 259158614, now seen corresponding path program 1 times [2020-10-29 05:13:15,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:13:15,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466319660] [2020-10-29 05:13:15,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:13:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:15,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:16,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:20,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:20,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 802 [2020-10-29 05:13:20,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:13:20,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-29 05:13:20,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:20,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:13:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:13:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 780 [2020-10-29 05:13:20,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:13:21,271 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:13:21,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:13:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:21,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:21,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:21,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:13:21,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:21,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:13:21,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:21,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:21,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:13:21,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:21,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:13:21,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:21,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:13:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:21,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:21,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:21,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:13:21,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:21,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:13:21,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:21,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:21,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:13:21,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:21,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:13:21,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:13:22,104 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:13:22,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466319660] [2020-10-29 05:13:22,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:13:22,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:13:22,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033322837] [2020-10-29 05:13:22,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:13:22,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:13:22,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:13:22,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:13:22,111 INFO L87 Difference]: Start difference. First operand 1690 states and 3030 transitions. Second operand 6 states. [2020-10-29 05:13:22,394 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:13:23,313 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 05:13:47,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:13:47,163 INFO L93 Difference]: Finished difference Result 6767 states and 12294 transitions. [2020-10-29 05:13:47,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:13:47,164 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 784 [2020-10-29 05:13:47,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:13:47,199 INFO L225 Difference]: With dead ends: 6767 [2020-10-29 05:13:47,199 INFO L226 Difference]: Without dead ends: 5083 [2020-10-29 05:13:47,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:13:47,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5083 states. [2020-10-29 05:13:47,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5083 to 5070. [2020-10-29 05:13:47,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5070 states. [2020-10-29 05:13:47,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5070 states to 5070 states and 8015 transitions. [2020-10-29 05:13:47,390 INFO L78 Accepts]: Start accepts. Automaton has 5070 states and 8015 transitions. Word has length 784 [2020-10-29 05:13:47,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:13:47,393 INFO L481 AbstractCegarLoop]: Abstraction has 5070 states and 8015 transitions. [2020-10-29 05:13:47,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:13:47,393 INFO L276 IsEmpty]: Start isEmpty. Operand 5070 states and 8015 transitions. [2020-10-29 05:13:47,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2020-10-29 05:13:47,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:13:47,419 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:13:47,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:13:47,420 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:13:47,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:13:47,421 INFO L82 PathProgramCache]: Analyzing trace with hash -464740115, now seen corresponding path program 1 times [2020-10-29 05:13:47,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:13:47,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743271263] [2020-10-29 05:13:47,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:13:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:47,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:48,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:51,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:52,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:52,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 809 [2020-10-29 05:13:52,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:13:52,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5104 [2020-10-29 05:13:52,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:52,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:52,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:13:52,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:13:52,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 780 [2020-10-29 05:13:52,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:13:53,272 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:13:53,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:13:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:53,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:53,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:53,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:13:53,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:53,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:13:53,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:53,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:53,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:13:53,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:53,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:13:53,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:13:53,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:13:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:53,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:53,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:53,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:13:53,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:53,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 05:13:53,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:53,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:53,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:13:53,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:53,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:13:53,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:53,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:13:53,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743271263] [2020-10-29 05:13:53,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:13:53,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:13:53,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52104362] [2020-10-29 05:13:53,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:13:53,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:13:53,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:13:53,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:13:53,904 INFO L87 Difference]: Start difference. First operand 5070 states and 8015 transitions. Second operand 5 states. [2020-10-29 05:13:54,144 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:14:09,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:14:09,763 INFO L93 Difference]: Finished difference Result 15213 states and 24429 transitions. [2020-10-29 05:14:09,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:14:09,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 791 [2020-10-29 05:14:09,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:14:09,825 INFO L225 Difference]: With dead ends: 15213 [2020-10-29 05:14:09,825 INFO L226 Difference]: Without dead ends: 10149 [2020-10-29 05:14:09,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:14:09,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10149 states. [2020-10-29 05:14:10,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10149 to 10145. [2020-10-29 05:14:10,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10145 states. [2020-10-29 05:14:10,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10145 states to 10145 states and 14628 transitions. [2020-10-29 05:14:10,167 INFO L78 Accepts]: Start accepts. Automaton has 10145 states and 14628 transitions. Word has length 791 [2020-10-29 05:14:10,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:14:10,168 INFO L481 AbstractCegarLoop]: Abstraction has 10145 states and 14628 transitions. [2020-10-29 05:14:10,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:14:10,168 INFO L276 IsEmpty]: Start isEmpty. Operand 10145 states and 14628 transitions. [2020-10-29 05:14:10,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2020-10-29 05:14:10,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:14:10,205 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:14:10,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:14:10,205 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:14:10,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:14:10,206 INFO L82 PathProgramCache]: Analyzing trace with hash -758882638, now seen corresponding path program 1 times [2020-10-29 05:14:10,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:14:10,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318520425] [2020-10-29 05:14:10,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:14:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:10,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:10,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:10,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:13,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:13,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:15,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:15,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 858 [2020-10-29 05:14:15,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:14:15,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 05:14:15,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:15,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:15,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:14:15,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 05:14:15,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 05:14:15,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:14:15,700 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:14:15,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:14:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:15,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:15,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:15,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:14:15,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:14:15,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:14:15,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:15,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:15,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:14:15,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:14:15,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:14:15,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:15,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:14:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:15,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:15,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:15,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:14:15,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:14:15,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:14:15,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:15,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:15,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:14:15,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:14:15,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 05:14:15,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:14:15,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 05:14:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:15,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:15,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:15,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:15,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:14:15,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:14:15,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 05:14:15,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:15,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:14:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:14:15,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 05:14:15,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:15,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 05:14:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:15,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:15,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:15,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 05:14:15,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:14:15,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 05:14:15,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:15,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:14:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:14:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 05:14:15,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:16,521 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 77 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-29 05:14:16,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318520425] [2020-10-29 05:14:16,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:14:16,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:14:16,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969570355] [2020-10-29 05:14:16,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:14:16,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:14:16,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:14:16,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:14:16,524 INFO L87 Difference]: Start difference. First operand 10145 states and 14628 transitions. Second operand 7 states. [2020-10-29 05:14:16,801 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:14:21,885 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 05:14:37,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:14:37,431 INFO L93 Difference]: Finished difference Result 30518 states and 44970 transitions. [2020-10-29 05:14:37,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 05:14:37,432 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 836 [2020-10-29 05:14:37,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:14:37,532 INFO L225 Difference]: With dead ends: 30518 [2020-10-29 05:14:37,532 INFO L226 Difference]: Without dead ends: 20379 [2020-10-29 05:14:37,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:14:37,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20379 states. [2020-10-29 05:14:38,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20379 to 16989. [2020-10-29 05:14:38,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16989 states. [2020-10-29 05:14:38,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16989 states to 16989 states and 23476 transitions. [2020-10-29 05:14:38,043 INFO L78 Accepts]: Start accepts. Automaton has 16989 states and 23476 transitions. Word has length 836 [2020-10-29 05:14:38,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:14:38,043 INFO L481 AbstractCegarLoop]: Abstraction has 16989 states and 23476 transitions. [2020-10-29 05:14:38,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:14:38,043 INFO L276 IsEmpty]: Start isEmpty. Operand 16989 states and 23476 transitions. [2020-10-29 05:14:38,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 906 [2020-10-29 05:14:38,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:14:38,096 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:14:38,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:14:38,097 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:14:38,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:14:38,098 INFO L82 PathProgramCache]: Analyzing trace with hash -406937331, now seen corresponding path program 1 times [2020-10-29 05:14:38,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:14:38,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006666920] [2020-10-29 05:14:38,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:14:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:38,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:38,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:38,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:43,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:43,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 927 [2020-10-29 05:14:43,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:14:43,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-10-29 05:14:43,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:43,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:43,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:14:43,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 05:14:43,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 05:14:43,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 05:14:43,665 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:14:43,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:14:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:43,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:43,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:43,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:14:43,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:14:43,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:14:43,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:43,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:43,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:14:43,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:14:43,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:14:43,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:43,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:14:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:43,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:43,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:43,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:14:43,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:14:43,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 05:14:43,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:43,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:43,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:14:43,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:14:43,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 05:14:43,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:43,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 05:14:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:43,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:43,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:43,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 05:14:43,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:14:43,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 05:14:43,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:43,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:43,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:14:43,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:14:43,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 05:14:43,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:43,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 05:14:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:14:43,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:14:43,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:14:43,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 05:14:43,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:14:43,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 05:14:43,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:14:43,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:14:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:14:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-29 05:14:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:14:43,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:14:44,424 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 138 proven. 49 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-29 05:14:44,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006666920] [2020-10-29 05:14:44,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:14:44,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:14:44,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322655843] [2020-10-29 05:14:44,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:14:44,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:14:44,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:14:44,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:14:44,428 INFO L87 Difference]: Start difference. First operand 16989 states and 23476 transitions. Second operand 7 states. [2020-10-29 05:14:44,856 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:14:47,834 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:15:14,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:15:14,244 INFO L93 Difference]: Finished difference Result 47787 states and 68404 transitions. [2020-10-29 05:15:14,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:15:14,246 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 905 [2020-10-29 05:15:14,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:15:14,410 INFO L225 Difference]: With dead ends: 47787 [2020-10-29 05:15:14,410 INFO L226 Difference]: Without dead ends: 30804 [2020-10-29 05:15:14,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:15:14,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30804 states. [2020-10-29 05:15:15,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30804 to 29956. [2020-10-29 05:15:15,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29956 states. [2020-10-29 05:15:15,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29956 states to 29956 states and 40105 transitions. [2020-10-29 05:15:15,321 INFO L78 Accepts]: Start accepts. Automaton has 29956 states and 40105 transitions. Word has length 905 [2020-10-29 05:15:15,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:15:15,322 INFO L481 AbstractCegarLoop]: Abstraction has 29956 states and 40105 transitions. [2020-10-29 05:15:15,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:15:15,322 INFO L276 IsEmpty]: Start isEmpty. Operand 29956 states and 40105 transitions. [2020-10-29 05:15:15,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 908 [2020-10-29 05:15:15,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:15:15,412 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:15:15,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:15:15,413 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:15:15,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:15:15,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1983233705, now seen corresponding path program 1 times [2020-10-29 05:15:15,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:15:15,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883169911] [2020-10-29 05:15:15,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:15:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:15,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:15,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:16,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:20,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:20,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 929 [2020-10-29 05:15:20,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:15:20,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-29 05:15:20,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:20,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:20,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:15:20,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 05:15:20,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 05:15:20,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:15:21,042 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:15:21,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:15:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:21,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:21,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:21,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:15:21,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:15:21,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:15:21,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:21,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:21,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:15:21,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:15:21,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:15:21,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:15:21,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:15:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:21,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:21,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:21,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 05:15:21,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:15:21,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:15:21,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:21,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:21,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:15:21,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:15:21,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:15:21,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:15:21,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 05:15:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:21,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:21,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:21,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 05:15:21,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:15:21,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 05:15:21,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:21,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:21,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:15:21,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:15:21,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 05:15:21,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:15:21,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 05:15:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:21,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:21,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:21,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 05:15:21,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:15:21,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 05:15:21,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:21,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:15:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:15:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 05:15:21,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:15:21,696 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 05:15:21,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883169911] [2020-10-29 05:15:21,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:15:21,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:15:21,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469696027] [2020-10-29 05:15:21,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:15:21,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:15:21,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:15:21,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:15:21,699 INFO L87 Difference]: Start difference. First operand 29956 states and 40105 transitions. Second operand 7 states. [2020-10-29 05:15:21,973 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 05:15:39,492 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 05:15:43,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:15:43,736 INFO L93 Difference]: Finished difference Result 86004 states and 121877 transitions. [2020-10-29 05:15:43,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 05:15:43,737 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 907 [2020-10-29 05:15:43,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:15:44,007 INFO L225 Difference]: With dead ends: 86004 [2020-10-29 05:15:44,007 INFO L226 Difference]: Without dead ends: 56054 [2020-10-29 05:15:44,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:15:44,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56054 states. [2020-10-29 05:15:45,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56054 to 54920. [2020-10-29 05:15:45,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54920 states. [2020-10-29 05:15:45,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54920 states to 54920 states and 74553 transitions. [2020-10-29 05:15:45,917 INFO L78 Accepts]: Start accepts. Automaton has 54920 states and 74553 transitions. Word has length 907 [2020-10-29 05:15:45,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:15:45,917 INFO L481 AbstractCegarLoop]: Abstraction has 54920 states and 74553 transitions. [2020-10-29 05:15:45,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:15:45,918 INFO L276 IsEmpty]: Start isEmpty. Operand 54920 states and 74553 transitions. [2020-10-29 05:15:46,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1000 [2020-10-29 05:15:46,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:15:46,074 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:15:46,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:15:46,075 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:15:46,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:15:46,076 INFO L82 PathProgramCache]: Analyzing trace with hash -496684243, now seen corresponding path program 1 times [2020-10-29 05:15:46,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:15:46,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83787642] [2020-10-29 05:15:46,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:15:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:46,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:46,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:46,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:47,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:47,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:51,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:51,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1025 [2020-10-29 05:15:51,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:15:51,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 05:15:51,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:51,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:51,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:15:51,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 05:15:51,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 05:15:51,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:15:51,621 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:15:51,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:15:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:51,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:51,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:51,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:15:51,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:15:51,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:15:51,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:51,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:51,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:15:51,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:15:51,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:15:51,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:15:51,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:15:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:51,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:51,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:51,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 05:15:51,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:15:51,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:15:51,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:51,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:51,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:15:51,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:15:51,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:15:51,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:15:51,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 05:15:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:51,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:51,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:51,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 05:15:51,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:15:51,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 05:15:51,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:51,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:51,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:15:51,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:15:51,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 05:15:51,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:15:51,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 05:15:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:51,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:51,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:51,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 05:15:51,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:15:51,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-29 05:15:51,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:51,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:51,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:15:51,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:15:51,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 05:15:51,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:15:52,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-29 05:15:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:52,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:52,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:52,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:15:52,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:15:52,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:15:52,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:52,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:52,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:15:52,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 05:15:52,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:15:52,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:15:52,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-29 05:15:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:52,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:52,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:52,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 05:15:52,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:15:52,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 05:15:52,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:52,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:52,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:15:52,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 05:15:52,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:15:52,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:15:52,617 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 292 proven. 39 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-29 05:15:52,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83787642] [2020-10-29 05:15:52,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:15:52,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:15:52,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446575989] [2020-10-29 05:15:52,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:15:52,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:15:52,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:15:52,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:15:52,625 INFO L87 Difference]: Start difference. First operand 54920 states and 74553 transitions. Second operand 7 states. [2020-10-29 05:15:53,098 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:16:03,107 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:16:15,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:16:15,499 INFO L93 Difference]: Finished difference Result 114979 states and 156167 transitions. [2020-10-29 05:16:15,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:16:15,500 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 999 [2020-10-29 05:16:15,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:16:15,708 INFO L225 Difference]: With dead ends: 114979 [2020-10-29 05:16:15,708 INFO L226 Difference]: Without dead ends: 56731 [2020-10-29 05:16:15,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:16:15,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56731 states. [2020-10-29 05:16:17,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56731 to 54934. [2020-10-29 05:16:17,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54934 states. [2020-10-29 05:16:17,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54934 states to 54934 states and 68286 transitions. [2020-10-29 05:16:17,572 INFO L78 Accepts]: Start accepts. Automaton has 54934 states and 68286 transitions. Word has length 999 [2020-10-29 05:16:17,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:16:17,573 INFO L481 AbstractCegarLoop]: Abstraction has 54934 states and 68286 transitions. [2020-10-29 05:16:17,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:16:17,573 INFO L276 IsEmpty]: Start isEmpty. Operand 54934 states and 68286 transitions. [2020-10-29 05:16:17,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1032 [2020-10-29 05:16:17,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:16:17,827 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:16:17,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 05:16:17,828 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:16:17,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:16:17,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1981692785, now seen corresponding path program 1 times [2020-10-29 05:16:17,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:16:17,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177149548] [2020-10-29 05:16:17,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:16:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:18,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:18,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:18,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking...