/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=DEEPEST --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/Problem14_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:11:06,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:11:06,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:11:06,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:11:06,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:11:06,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:11:06,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:11:06,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:11:06,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:11:06,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:11:06,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:11:06,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:11:06,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:11:06,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:11:06,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:11:06,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:11:06,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:11:06,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:11:06,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:11:06,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:11:06,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:11:06,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:11:06,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:11:06,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:11:06,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:11:06,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:11:06,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:11:06,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:11:06,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:11:06,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:11:06,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:11:06,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:11:06,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:11:06,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:11:06,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:11:06,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:11:06,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:11:06,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:11:06,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:11:06,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:11:06,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:11:06,836 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 18:11:06,895 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:11:06,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:11:06,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:11:06,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:11:06,901 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:11:06,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:11:06,902 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:11:06,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:11:06,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:11:06,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:11:06,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:11:06,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:11:06,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:11:06,905 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:11:06,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:11:06,905 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:11:06,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:11:06,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:11:06,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:11:06,907 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:11:06,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:11:06,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:11:06,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:11:06,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:11:06,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:11:06,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:11:06,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:11:06,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:11:06,909 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:11:06,909 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:11:07,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:11:07,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:11:07,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:11:07,368 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:11:07,369 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:11:07,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label10.c [2020-10-27 18:11:07,450 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31a4192c9/ad827b084173451eab8c6e9e33c8d7e4/FLAG6b277d7ab [2020-10-27 18:11:08,306 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:11:08,307 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label10.c [2020-10-27 18:11:08,325 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31a4192c9/ad827b084173451eab8c6e9e33c8d7e4/FLAG6b277d7ab [2020-10-27 18:11:08,466 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31a4192c9/ad827b084173451eab8c6e9e33c8d7e4 [2020-10-27 18:11:08,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:11:08,478 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:11:08,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:11:08,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:11:08,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:11:08,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:11:08" (1/1) ... [2020-10-27 18:11:08,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fc720d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:08, skipping insertion in model container [2020-10-27 18:11:08,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:11:08" (1/1) ... [2020-10-27 18:11:08,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:11:08,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:11:09,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:11:09,125 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:11:09,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:11:09,473 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:11:09,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:09 WrapperNode [2020-10-27 18:11:09,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:11:09,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:11:09,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:11:09,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:11:09,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:09" (1/1) ... [2020-10-27 18:11:09,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:09" (1/1) ... [2020-10-27 18:11:09,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:09" (1/1) ... [2020-10-27 18:11:09,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:09" (1/1) ... [2020-10-27 18:11:09,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:09" (1/1) ... [2020-10-27 18:11:09,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:09" (1/1) ... [2020-10-27 18:11:09,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:09" (1/1) ... [2020-10-27 18:11:09,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:11:09,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:11:09,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:11:09,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:11:09,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:11:09,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:11:09,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:11:09,765 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:11:09,765 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:11:09,765 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:11:09,765 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:11:09,765 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:11:09,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:11:09,766 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:11:09,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:11:09,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:11:09,766 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:11:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:11:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:11:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:11:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:11:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:11:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:11:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:11:11,477 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:11:11,478 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:11:11,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:11 BoogieIcfgContainer [2020-10-27 18:11:11,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:11:11,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:11:11,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:11:11,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:11:11,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:11:08" (1/3) ... [2020-10-27 18:11:11,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53294a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:11:11, skipping insertion in model container [2020-10-27 18:11:11,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:09" (2/3) ... [2020-10-27 18:11:11,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53294a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:11:11, skipping insertion in model container [2020-10-27 18:11:11,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:11" (3/3) ... [2020-10-27 18:11:11,496 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label10.c [2020-10-27 18:11:11,510 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:11:11,517 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:11:11,532 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:11:11,569 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:11:11,569 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:11:11,569 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:11:11,570 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:11:11,570 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:11:11,570 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:11:11,570 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:11:11,570 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:11:11,595 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-27 18:11:11,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 18:11:11,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:11:11,604 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] [2020-10-27 18:11:11,605 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:11:11,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:11:11,612 INFO L82 PathProgramCache]: Analyzing trace with hash 260681158, now seen corresponding path program 1 times [2020-10-27 18:11:11,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:11:11,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436457537] [2020-10-27 18:11:11,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:11:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:11,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:12,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:12,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 18:11:12,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:12,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-10-27 18:11:12,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:12,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:11:12,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:11:12,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 18:11:12,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 18:11:12,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:11:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:12,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:12,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:12,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:11:12,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:12,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 18:11:12,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:11:12,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:12,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:11:12,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:11:12,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:11:12,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436457537] [2020-10-27 18:11:12,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:11:12,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 18:11:12,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601737482] [2020-10-27 18:11:12,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:11:12,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:11:12,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:11:12,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:11:12,705 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 5 states. [2020-10-27 18:11:16,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:11:16,177 INFO L93 Difference]: Finished difference Result 891 states and 1619 transitions. [2020-10-27 18:11:16,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:11:16,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-27 18:11:16,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:11:16,201 INFO L225 Difference]: With dead ends: 891 [2020-10-27 18:11:16,201 INFO L226 Difference]: Without dead ends: 565 [2020-10-27 18:11:16,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:11:16,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-27 18:11:16,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 559. [2020-10-27 18:11:16,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-27 18:11:16,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 907 transitions. [2020-10-27 18:11:16,338 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 907 transitions. Word has length 35 [2020-10-27 18:11:16,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:11:16,339 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 907 transitions. [2020-10-27 18:11:16,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:11:16,339 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 907 transitions. [2020-10-27 18:11:16,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 18:11:16,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:11:16,346 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:11:16,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:11:16,346 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:11:16,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:11:16,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1515399673, now seen corresponding path program 1 times [2020-10-27 18:11:16,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:11:16,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367904977] [2020-10-27 18:11:16,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:11:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:16,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:16,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:17,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:17,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:11:17,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:11:17,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1135 [2020-10-27 18:11:17,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:17,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:11:17,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 18:11:17,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 18:11:17,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:11:17,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:11:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:17,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:17,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:17,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:11:17,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:17,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 18:11:17,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:17,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:17,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:17,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:17,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:17,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:11:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:17,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:17,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:17,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 18:11:17,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:17,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 18:11:17,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:17,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:11:17,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:17,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 18:11:17,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:17,911 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:11:17,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367904977] [2020-10-27 18:11:17,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:11:17,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:11:17,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27804674] [2020-10-27 18:11:17,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:11:17,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:11:17,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:11:17,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:11:17,922 INFO L87 Difference]: Start difference. First operand 559 states and 907 transitions. Second operand 6 states. [2020-10-27 18:11:21,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:11:21,606 INFO L93 Difference]: Finished difference Result 2226 states and 3714 transitions. [2020-10-27 18:11:21,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:11:21,606 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-27 18:11:21,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:11:21,621 INFO L225 Difference]: With dead ends: 2226 [2020-10-27 18:11:21,621 INFO L226 Difference]: Without dead ends: 1673 [2020-10-27 18:11:21,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:11:21,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2020-10-27 18:11:21,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 929. [2020-10-27 18:11:21,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-10-27 18:11:21,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1443 transitions. [2020-10-27 18:11:21,717 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1443 transitions. Word has length 104 [2020-10-27 18:11:21,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:11:21,718 INFO L481 AbstractCegarLoop]: Abstraction has 929 states and 1443 transitions. [2020-10-27 18:11:21,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:11:21,719 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1443 transitions. [2020-10-27 18:11:21,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 18:11:21,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:11:21,731 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:11:21,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:11:21,731 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:11:21,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:11:21,732 INFO L82 PathProgramCache]: Analyzing trace with hash -425192927, now seen corresponding path program 1 times [2020-10-27 18:11:21,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:11:21,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127039083] [2020-10-27 18:11:21,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:11:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:21,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:22,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:22,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-27 18:11:22,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:22,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 614 [2020-10-27 18:11:22,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:11:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:11:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-27 18:11:22,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:22,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:11:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:22,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:22,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:22,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:11:22,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:22,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:11:22,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:22,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:11:22,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:22,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:11:22,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:11:22,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:11:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:22,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:22,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:22,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 18:11:22,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:22,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-27 18:11:22,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:22,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:11:22,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:11:22,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-27 18:11:22,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:11:23,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127039083] [2020-10-27 18:11:23,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:11:23,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 18:11:23,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302177906] [2020-10-27 18:11:23,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:11:23,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:11:23,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:11:23,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:11:23,225 INFO L87 Difference]: Start difference. First operand 929 states and 1443 transitions. Second operand 7 states. [2020-10-27 18:11:25,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:11:25,846 INFO L93 Difference]: Finished difference Result 2442 states and 3884 transitions. [2020-10-27 18:11:25,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:11:25,850 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2020-10-27 18:11:25,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:11:25,871 INFO L225 Difference]: With dead ends: 2442 [2020-10-27 18:11:25,871 INFO L226 Difference]: Without dead ends: 1519 [2020-10-27 18:11:25,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:11:25,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2020-10-27 18:11:25,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1313. [2020-10-27 18:11:25,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1313 states. [2020-10-27 18:11:25,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1855 transitions. [2020-10-27 18:11:25,985 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1855 transitions. Word has length 188 [2020-10-27 18:11:25,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:11:25,987 INFO L481 AbstractCegarLoop]: Abstraction has 1313 states and 1855 transitions. [2020-10-27 18:11:25,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:11:25,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1855 transitions. [2020-10-27 18:11:26,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-27 18:11:26,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:11:26,005 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:11:26,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:11:26,006 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:11:26,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:11:26,007 INFO L82 PathProgramCache]: Analyzing trace with hash 889784276, now seen corresponding path program 1 times [2020-10-27 18:11:26,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:11:26,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866953683] [2020-10-27 18:11:26,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:11:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:26,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:26,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:26,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:31,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:31,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-27 18:11:31,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:11:31,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 18:11:31,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:31,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 18:11:31,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-27 18:11:31,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-27 18:11:31,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:11:31,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:11:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:31,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:31,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:31,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:11:31,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:31,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:11:31,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:31,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:31,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:31,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:31,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:31,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:11:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:31,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:31,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:31,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:11:31,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:31,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 18:11:31,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:31,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:11:31,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:31,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 18:11:31,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:31,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-27 18:11:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:31,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:31,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:32,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:32,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 18:11:32,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:11:32,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 833 [2020-10-27 18:11:32,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:32,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 18:11:32,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:11:32,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-27 18:11:32,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:33,070 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2020-10-27 18:11:33,302 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-10-27 18:11:33,545 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-10-27 18:11:33,768 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-10-27 18:11:34,003 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-10-27 18:11:34,820 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 18:11:34,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866953683] [2020-10-27 18:11:34,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:11:34,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 18:11:34,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660215262] [2020-10-27 18:11:34,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 18:11:34,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:11:34,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 18:11:34,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:11:34,823 INFO L87 Difference]: Start difference. First operand 1313 states and 1855 transitions. Second operand 13 states. [2020-10-27 18:11:35,697 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-10-27 18:11:36,295 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2020-10-27 18:11:36,617 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2020-10-27 18:11:36,972 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-27 18:11:37,443 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 93 [2020-10-27 18:11:37,794 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2020-10-27 18:11:38,345 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2020-10-27 18:11:38,727 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 93 [2020-10-27 18:11:39,136 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 108 [2020-10-27 18:11:40,512 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 86 [2020-10-27 18:11:41,184 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 89 [2020-10-27 18:11:41,618 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 88 [2020-10-27 18:11:42,177 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 88 [2020-10-27 18:11:42,594 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 89 [2020-10-27 18:11:43,022 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 93 [2020-10-27 18:11:43,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:11:43,439 INFO L93 Difference]: Finished difference Result 2826 states and 4061 transitions. [2020-10-27 18:11:43,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 18:11:43,440 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 300 [2020-10-27 18:11:43,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:11:43,449 INFO L225 Difference]: With dead ends: 2826 [2020-10-27 18:11:43,449 INFO L226 Difference]: Without dead ends: 1486 [2020-10-27 18:11:43,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=254, Invalid=616, Unknown=0, NotChecked=0, Total=870 [2020-10-27 18:11:43,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2020-10-27 18:11:43,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1474. [2020-10-27 18:11:43,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2020-10-27 18:11:43,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2033 transitions. [2020-10-27 18:11:43,508 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2033 transitions. Word has length 300 [2020-10-27 18:11:43,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:11:43,508 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2033 transitions. [2020-10-27 18:11:43,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 18:11:43,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2033 transitions. [2020-10-27 18:11:43,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-27 18:11:43,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:11:43,516 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:11:43,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:11:43,517 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:11:43,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:11:43,517 INFO L82 PathProgramCache]: Analyzing trace with hash 651075184, now seen corresponding path program 1 times [2020-10-27 18:11:43,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:11:43,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441125202] [2020-10-27 18:11:43,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:11:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:43,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:43,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:46,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:46,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-27 18:11:46,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:11:46,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2558 [2020-10-27 18:11:46,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:46,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:11:46,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 18:11:46,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-27 18:11:46,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:46,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:11:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:46,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:46,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:46,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:11:46,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:46,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:11:46,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:46,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:46,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:46,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:46,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:46,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:11:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:46,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:46,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:46,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 18:11:46,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:46,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 18:11:46,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:46,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:11:46,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:46,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 18:11:46,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:46,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-27 18:11:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:46,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:46,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:46,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 18:11:46,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:46,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-27 18:11:46,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:46,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:11:46,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:11:46,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-27 18:11:46,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 18:11:47,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441125202] [2020-10-27 18:11:47,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:11:47,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:11:47,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427344709] [2020-10-27 18:11:47,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:11:47,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:11:47,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:11:47,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:11:47,015 INFO L87 Difference]: Start difference. First operand 1474 states and 2033 transitions. Second operand 7 states. [2020-10-27 18:11:51,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:11:51,208 INFO L93 Difference]: Finished difference Result 3946 states and 5645 transitions. [2020-10-27 18:11:51,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:11:51,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 318 [2020-10-27 18:11:51,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:11:51,228 INFO L225 Difference]: With dead ends: 3946 [2020-10-27 18:11:51,228 INFO L226 Difference]: Without dead ends: 2478 [2020-10-27 18:11:51,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:11:51,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2020-10-27 18:11:51,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 2232. [2020-10-27 18:11:51,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2232 states. [2020-10-27 18:11:51,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 2851 transitions. [2020-10-27 18:11:51,338 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 2851 transitions. Word has length 318 [2020-10-27 18:11:51,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:11:51,339 INFO L481 AbstractCegarLoop]: Abstraction has 2232 states and 2851 transitions. [2020-10-27 18:11:51,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:11:51,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 2851 transitions. [2020-10-27 18:11:51,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-27 18:11:51,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:11:51,351 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:11:51,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:11:51,351 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:11:51,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:11:51,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1520015694, now seen corresponding path program 1 times [2020-10-27 18:11:51,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:11:51,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101993687] [2020-10-27 18:11:51,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:11:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:51,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:51,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:52,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:56,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:56,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 381 [2020-10-27 18:11:56,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:11:56,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4962 [2020-10-27 18:11:56,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:56,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:11:56,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-27 18:11:56,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-27 18:11:56,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:56,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:11:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:56,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:56,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:56,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:11:56,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:56,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:11:56,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:56,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:56,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:56,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:56,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:56,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:11:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:56,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:56,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:56,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:11:56,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:56,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-27 18:11:56,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:56,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:11:56,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:56,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-27 18:11:56,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:56,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-27 18:11:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:56,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:57,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:57,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 18:11:57,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:57,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-27 18:11:57,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:57,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:11:57,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:11:57,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-27 18:11:57,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 18:11:57,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101993687] [2020-10-27 18:11:57,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:11:57,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:11:57,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307675829] [2020-10-27 18:11:57,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:11:57,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:11:57,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:11:57,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:11:57,443 INFO L87 Difference]: Start difference. First operand 2232 states and 2851 transitions. Second operand 7 states. [2020-10-27 18:12:00,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:12:00,251 INFO L93 Difference]: Finished difference Result 5234 states and 6847 transitions. [2020-10-27 18:12:00,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:12:00,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 367 [2020-10-27 18:12:00,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:12:00,277 INFO L225 Difference]: With dead ends: 5234 [2020-10-27 18:12:00,277 INFO L226 Difference]: Without dead ends: 3012 [2020-10-27 18:12:00,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:12:00,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2020-10-27 18:12:00,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 2996. [2020-10-27 18:12:00,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2996 states. [2020-10-27 18:12:00,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2996 states to 2996 states and 3853 transitions. [2020-10-27 18:12:00,404 INFO L78 Accepts]: Start accepts. Automaton has 2996 states and 3853 transitions. Word has length 367 [2020-10-27 18:12:00,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:12:00,405 INFO L481 AbstractCegarLoop]: Abstraction has 2996 states and 3853 transitions. [2020-10-27 18:12:00,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:12:00,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2996 states and 3853 transitions. [2020-10-27 18:12:00,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2020-10-27 18:12:00,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:12:00,423 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:12:00,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:12:00,424 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:12:00,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:12:00,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1036120905, now seen corresponding path program 1 times [2020-10-27 18:12:00,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:12:00,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468318711] [2020-10-27 18:12:00,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:12:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:00,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:00,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:02,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:04,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:05,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:05,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 462 [2020-10-27 18:12:05,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:12:05,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 18:12:05,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:05,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:12:05,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 270 [2020-10-27 18:12:05,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-27 18:12:05,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:05,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:12:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:05,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:05,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:05,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:12:05,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:05,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:12:05,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:05,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:05,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:05,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:05,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:05,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:12:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:05,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:05,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:05,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:12:05,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:05,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 18:12:05,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:05,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:05,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-27 18:12:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:05,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:05,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:05,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 18:12:05,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:05,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 18:12:05,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:05,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:12:05,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:05,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:12:05,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:05,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-27 18:12:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:05,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:06,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:06,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 18:12:06,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:06,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-27 18:12:06,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:06,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:12:06,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:12:06,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-27 18:12:06,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:12:06,478 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 312 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-27 18:12:06,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468318711] [2020-10-27 18:12:06,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:12:06,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:12:06,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531045690] [2020-10-27 18:12:06,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:12:06,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:12:06,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:12:06,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:12:06,481 INFO L87 Difference]: Start difference. First operand 2996 states and 3853 transitions. Second operand 7 states. [2020-10-27 18:12:09,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:12:09,683 INFO L93 Difference]: Finished difference Result 6444 states and 8895 transitions. [2020-10-27 18:12:09,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:12:09,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 446 [2020-10-27 18:12:09,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:12:09,711 INFO L225 Difference]: With dead ends: 6444 [2020-10-27 18:12:09,712 INFO L226 Difference]: Without dead ends: 3832 [2020-10-27 18:12:09,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:12:09,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3832 states. [2020-10-27 18:12:09,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3832 to 3736. [2020-10-27 18:12:09,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3736 states. [2020-10-27 18:12:09,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3736 states to 3736 states and 4778 transitions. [2020-10-27 18:12:09,873 INFO L78 Accepts]: Start accepts. Automaton has 3736 states and 4778 transitions. Word has length 446 [2020-10-27 18:12:09,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:12:09,874 INFO L481 AbstractCegarLoop]: Abstraction has 3736 states and 4778 transitions. [2020-10-27 18:12:09,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:12:09,874 INFO L276 IsEmpty]: Start isEmpty. Operand 3736 states and 4778 transitions. [2020-10-27 18:12:09,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2020-10-27 18:12:09,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:12:09,894 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:12:09,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:12:09,895 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:12:09,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:12:09,895 INFO L82 PathProgramCache]: Analyzing trace with hash -59248679, now seen corresponding path program 1 times [2020-10-27 18:12:09,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:12:09,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857476263] [2020-10-27 18:12:09,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:12:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:10,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:10,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:11,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:12,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:14,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:14,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 501 [2020-10-27 18:12:14,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:12:14,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 18:12:14,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 18:12:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 309 [2020-10-27 18:12:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-27 18:12:14,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:15,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:12:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:15,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:15,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:15,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:12:15,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:15,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:12:15,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:15,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:15,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:15,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:15,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:15,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:12:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:15,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:15,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:15,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:12:15,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:15,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 18:12:15,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:15,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:15,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:15,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:15,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:15,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-27 18:12:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:15,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:15,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:15,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 18:12:15,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:15,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 18:12:15,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:12:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 18:12:15,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:15,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-10-27 18:12:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:15,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:15,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:15,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:15,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 18:12:15,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:12:15,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-27 18:12:15,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:15,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 18:12:15,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:12:15,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-27 18:12:15,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:16,440 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-10-27 18:12:16,638 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-27 18:12:16,859 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-27 18:12:17,074 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-27 18:12:17,292 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-10-27 18:12:18,529 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 351 proven. 2 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-27 18:12:18,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857476263] [2020-10-27 18:12:18,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:12:18,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 18:12:18,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511149086] [2020-10-27 18:12:18,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 18:12:18,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:12:18,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 18:12:18,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:12:18,532 INFO L87 Difference]: Start difference. First operand 3736 states and 4778 transitions. Second operand 13 states. [2020-10-27 18:12:19,464 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2020-10-27 18:12:19,946 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 95 [2020-10-27 18:12:20,340 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 95 [2020-10-27 18:12:20,483 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 18:12:20,895 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 95 [2020-10-27 18:12:21,422 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 96 [2020-10-27 18:12:21,828 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 109 [2020-10-27 18:12:22,924 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2020-10-27 18:12:23,202 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-27 18:12:24,084 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2020-10-27 18:12:24,600 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2020-10-27 18:12:25,041 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 89 [2020-10-27 18:12:25,477 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2020-10-27 18:12:26,037 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 88 [2020-10-27 18:12:26,459 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 92 [2020-10-27 18:12:26,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:12:26,901 INFO L93 Difference]: Finished difference Result 7282 states and 9443 transitions. [2020-10-27 18:12:26,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 18:12:26,902 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 485 [2020-10-27 18:12:26,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:12:26,924 INFO L225 Difference]: With dead ends: 7282 [2020-10-27 18:12:26,924 INFO L226 Difference]: Without dead ends: 3888 [2020-10-27 18:12:26,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=255, Invalid=615, Unknown=0, NotChecked=0, Total=870 [2020-10-27 18:12:26,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2020-10-27 18:12:27,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3882. [2020-10-27 18:12:27,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3882 states. [2020-10-27 18:12:27,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 4942 transitions. [2020-10-27 18:12:27,064 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 4942 transitions. Word has length 485 [2020-10-27 18:12:27,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:12:27,065 INFO L481 AbstractCegarLoop]: Abstraction has 3882 states and 4942 transitions. [2020-10-27 18:12:27,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 18:12:27,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 4942 transitions. [2020-10-27 18:12:27,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-10-27 18:12:27,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:12:27,081 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:12:27,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:12:27,081 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:12:27,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:12:27,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1701379929, now seen corresponding path program 1 times [2020-10-27 18:12:27,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:12:27,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076492887] [2020-10-27 18:12:27,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:12:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:27,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:27,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:29,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:29,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 565 [2020-10-27 18:12:29,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:12:29,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2749 [2020-10-27 18:12:29,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:29,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:12:29,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:12:29,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-27 18:12:29,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:30,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:12:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:30,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:30,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:30,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:12:30,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:30,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:12:30,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:30,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:12:30,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:30,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:12:30,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:30,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:12:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:30,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:30,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:30,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:12:30,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:30,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-27 18:12:30,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:30,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:12:30,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:12:30,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-27 18:12:30,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:30,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-27 18:12:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:30,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:30,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:30,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 18:12:30,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:30,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 18:12:30,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:30,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:30,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-27 18:12:30,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:30,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:30,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-10-27 18:12:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:30,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:30,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:30,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 18:12:30,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:30,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-27 18:12:30,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:30,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:30,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 18:12:30,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:30,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:31,055 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 81 proven. 322 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2020-10-27 18:12:31,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076492887] [2020-10-27 18:12:31,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:12:31,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:12:31,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109708249] [2020-10-27 18:12:31,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:12:31,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:12:31,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:12:31,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:12:31,058 INFO L87 Difference]: Start difference. First operand 3882 states and 4942 transitions. Second operand 7 states. [2020-10-27 18:12:33,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:12:33,549 INFO L93 Difference]: Finished difference Result 8324 states and 10666 transitions. [2020-10-27 18:12:33,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:12:33,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 549 [2020-10-27 18:12:33,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:12:33,571 INFO L225 Difference]: With dead ends: 8324 [2020-10-27 18:12:33,572 INFO L226 Difference]: Without dead ends: 4452 [2020-10-27 18:12:33,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:12:33,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4452 states. [2020-10-27 18:12:33,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4452 to 4444. [2020-10-27 18:12:33,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4444 states. [2020-10-27 18:12:33,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4444 states to 4444 states and 5578 transitions. [2020-10-27 18:12:33,719 INFO L78 Accepts]: Start accepts. Automaton has 4444 states and 5578 transitions. Word has length 549 [2020-10-27 18:12:33,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:12:33,719 INFO L481 AbstractCegarLoop]: Abstraction has 4444 states and 5578 transitions. [2020-10-27 18:12:33,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:12:33,720 INFO L276 IsEmpty]: Start isEmpty. Operand 4444 states and 5578 transitions. [2020-10-27 18:12:33,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2020-10-27 18:12:33,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:12:33,736 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:12:33,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:12:33,737 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:12:33,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:12:33,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1445284568, now seen corresponding path program 1 times [2020-10-27 18:12:33,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:12:33,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140827977] [2020-10-27 18:12:33,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:12:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:33,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:34,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:34,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:37,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:37,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 650 [2020-10-27 18:12:37,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:12:37,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3923 [2020-10-27 18:12:37,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:37,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:12:37,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-27 18:12:37,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 18:12:37,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:37,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:12:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:37,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:37,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:37,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:12:37,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:37,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:12:37,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:37,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:37,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:37,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:37,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:37,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:12:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:37,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:37,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:37,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:12:37,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:37,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 18:12:37,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:37,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:12:37,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:37,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 18:12:37,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:37,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 18:12:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:38,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:38,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:38,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:38,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:12:38,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:12:38,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-27 18:12:38,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:38,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:12:38,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:12:38,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-27 18:12:38,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:38,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-10-27 18:12:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:38,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:38,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:38,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 18:12:38,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:38,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 18:12:38,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:38,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:38,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-27 18:12:38,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:38,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:12:38,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-27 18:12:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:38,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:38,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:38,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 18:12:38,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:38,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 18:12:38,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:38,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:38,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 18:12:38,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:38,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:38,986 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 196 proven. 328 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2020-10-27 18:12:38,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140827977] [2020-10-27 18:12:38,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:12:38,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:12:38,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945281316] [2020-10-27 18:12:38,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:12:38,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:12:38,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:12:38,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:12:38,989 INFO L87 Difference]: Start difference. First operand 4444 states and 5578 transitions. Second operand 7 states. [2020-10-27 18:12:40,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:12:40,992 INFO L93 Difference]: Finished difference Result 8330 states and 10555 transitions. [2020-10-27 18:12:41,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:12:41,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 632 [2020-10-27 18:12:41,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:12:41,032 INFO L225 Difference]: With dead ends: 8330 [2020-10-27 18:12:41,032 INFO L226 Difference]: Without dead ends: 4444 [2020-10-27 18:12:41,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:12:41,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2020-10-27 18:12:41,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 4440. [2020-10-27 18:12:41,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4440 states. [2020-10-27 18:12:41,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4440 states to 4440 states and 5532 transitions. [2020-10-27 18:12:41,162 INFO L78 Accepts]: Start accepts. Automaton has 4440 states and 5532 transitions. Word has length 632 [2020-10-27 18:12:41,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:12:41,162 INFO L481 AbstractCegarLoop]: Abstraction has 4440 states and 5532 transitions. [2020-10-27 18:12:41,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:12:41,163 INFO L276 IsEmpty]: Start isEmpty. Operand 4440 states and 5532 transitions. [2020-10-27 18:12:41,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2020-10-27 18:12:41,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:12:41,179 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:12:41,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 18:12:41,179 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:12:41,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:12:41,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1283786268, now seen corresponding path program 1 times [2020-10-27 18:12:41,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:12:41,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804223788] [2020-10-27 18:12:41,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:12:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:41,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:41,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:41,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:46,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:46,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 676 [2020-10-27 18:12:46,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:12:46,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 18:12:46,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:46,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:12:46,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-27 18:12:46,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-27 18:12:46,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:46,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:12:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:46,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:46,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:46,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:12:46,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:46,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:12:46,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:46,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:46,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:46,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:46,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:46,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:12:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:46,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:46,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:46,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:12:46,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:46,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 18:12:46,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:12:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 18:12:46,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:46,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 18:12:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:46,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:46,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:46,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:12:46,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:46,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-27 18:12:46,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:46,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:12:46,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:12:46,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-27 18:12:46,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:46,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-27 18:12:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:46,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:47,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:47,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 18:12:47,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:47,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 18:12:47,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:47,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:47,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-27 18:12:47,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:47,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:47,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2020-10-27 18:12:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:47,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:47,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:47,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 18:12:47,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:47,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 18:12:47,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:47,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:47,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 18:12:47,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:47,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:47,611 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 222 proven. 328 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2020-10-27 18:12:47,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804223788] [2020-10-27 18:12:47,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:12:47,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:12:47,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101087999] [2020-10-27 18:12:47,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:12:47,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:12:47,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:12:47,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:12:47,614 INFO L87 Difference]: Start difference. First operand 4440 states and 5532 transitions. Second operand 7 states. [2020-10-27 18:12:50,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:12:50,490 INFO L93 Difference]: Finished difference Result 9238 states and 11856 transitions. [2020-10-27 18:12:50,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:12:50,491 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 658 [2020-10-27 18:12:50,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:12:50,510 INFO L225 Difference]: With dead ends: 9238 [2020-10-27 18:12:50,510 INFO L226 Difference]: Without dead ends: 5368 [2020-10-27 18:12:50,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:12:50,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5368 states. [2020-10-27 18:12:50,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5368 to 5366. [2020-10-27 18:12:50,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5366 states. [2020-10-27 18:12:50,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5366 states to 5366 states and 6760 transitions. [2020-10-27 18:12:50,655 INFO L78 Accepts]: Start accepts. Automaton has 5366 states and 6760 transitions. Word has length 658 [2020-10-27 18:12:50,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:12:50,656 INFO L481 AbstractCegarLoop]: Abstraction has 5366 states and 6760 transitions. [2020-10-27 18:12:50,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:12:50,656 INFO L276 IsEmpty]: Start isEmpty. Operand 5366 states and 6760 transitions. [2020-10-27 18:12:50,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 680 [2020-10-27 18:12:50,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:12:50,675 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:12:50,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 18:12:50,675 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:12:50,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:12:50,676 INFO L82 PathProgramCache]: Analyzing trace with hash -649449494, now seen corresponding path program 1 times [2020-10-27 18:12:50,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:12:50,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119798760] [2020-10-27 18:12:50,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:12:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:50,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:50,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:53,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:53,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 697 [2020-10-27 18:12:53,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:12:53,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2978 [2020-10-27 18:12:53,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:53,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:12:53,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 18:12:53,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-27 18:12:53,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:53,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:12:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:53,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:53,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:53,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:12:53,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:53,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:12:53,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:53,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:53,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:53,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:53,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:53,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:12:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:53,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:53,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:53,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 18:12:53,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:53,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 18:12:53,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:53,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:12:53,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:53,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 18:12:53,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:53,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-27 18:12:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:53,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:54,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:54,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:12:54,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:54,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 18:12:54,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:54,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:12:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:12:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-27 18:12:54,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:54,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-10-27 18:12:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:54,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:54,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:54,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 18:12:54,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:54,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 18:12:54,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:54,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:54,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-27 18:12:54,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:54,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:54,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2020-10-27 18:12:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:54,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:54,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:54,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 18:12:54,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:54,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 18:12:54,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:54,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:54,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 18:12:54,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:54,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:54,927 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 243 proven. 328 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2020-10-27 18:12:54,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119798760] [2020-10-27 18:12:54,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:12:54,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:12:54,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911897607] [2020-10-27 18:12:54,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:12:54,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:12:54,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:12:54,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:12:54,930 INFO L87 Difference]: Start difference. First operand 5366 states and 6760 transitions. Second operand 7 states. [2020-10-27 18:12:58,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:12:58,094 INFO L93 Difference]: Finished difference Result 10312 states and 13698 transitions. [2020-10-27 18:12:58,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:12:58,095 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 679 [2020-10-27 18:12:58,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:12:58,123 INFO L225 Difference]: With dead ends: 10312 [2020-10-27 18:12:58,123 INFO L226 Difference]: Without dead ends: 5516 [2020-10-27 18:12:58,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:12:58,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5516 states. [2020-10-27 18:12:58,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5516 to 5368. [2020-10-27 18:12:58,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5368 states. [2020-10-27 18:12:58,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5368 states to 5368 states and 6520 transitions. [2020-10-27 18:12:58,314 INFO L78 Accepts]: Start accepts. Automaton has 5368 states and 6520 transitions. Word has length 679 [2020-10-27 18:12:58,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:12:58,315 INFO L481 AbstractCegarLoop]: Abstraction has 5368 states and 6520 transitions. [2020-10-27 18:12:58,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:12:58,316 INFO L276 IsEmpty]: Start isEmpty. Operand 5368 states and 6520 transitions. [2020-10-27 18:12:58,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2020-10-27 18:12:58,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:12:58,336 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:12:58,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 18:12:58,336 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:12:58,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:12:58,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1597639860, now seen corresponding path program 1 times [2020-10-27 18:12:58,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:12:58,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086476675] [2020-10-27 18:12:58,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:12:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:58,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:58,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:58,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:03,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:03,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 700 [2020-10-27 18:13:03,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:13:03,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-27 18:13:03,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:13:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-27 18:13:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-27 18:13:03,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:03,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:13:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:03,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:03,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:03,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:13:03,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:03,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:13:03,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:03,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:03,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:03,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:03,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:03,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:13:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:03,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:03,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:03,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 18:13:03,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:03,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 18:13:03,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:03,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:13:03,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:03,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 18:13:03,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:03,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-27 18:13:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:03,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:03,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:03,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:13:03,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:03,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-27 18:13:03,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:13:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:13:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-27 18:13:03,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:04,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-27 18:13:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:04,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:04,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:04,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 18:13:04,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:04,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 18:13:04,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:04,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:04,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-27 18:13:04,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:04,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:04,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-10-27 18:13:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:04,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:04,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:04,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 18:13:04,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:04,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 18:13:04,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:04,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:04,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 18:13:04,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:04,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:04,719 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 246 proven. 328 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2020-10-27 18:13:04,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086476675] [2020-10-27 18:13:04,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:13:04,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:13:04,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077472944] [2020-10-27 18:13:04,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:13:04,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:13:04,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:13:04,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:13:04,721 INFO L87 Difference]: Start difference. First operand 5368 states and 6520 transitions. Second operand 7 states. [2020-10-27 18:13:07,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:13:07,561 INFO L93 Difference]: Finished difference Result 11414 states and 14534 transitions. [2020-10-27 18:13:07,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:13:07,562 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 682 [2020-10-27 18:13:07,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:13:07,588 INFO L225 Difference]: With dead ends: 11414 [2020-10-27 18:13:07,589 INFO L226 Difference]: Without dead ends: 6616 [2020-10-27 18:13:07,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:13:07,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6616 states. [2020-10-27 18:13:07,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6616 to 6480. [2020-10-27 18:13:07,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6480 states. [2020-10-27 18:13:07,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6480 states to 6480 states and 7773 transitions. [2020-10-27 18:13:07,793 INFO L78 Accepts]: Start accepts. Automaton has 6480 states and 7773 transitions. Word has length 682 [2020-10-27 18:13:07,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:13:07,794 INFO L481 AbstractCegarLoop]: Abstraction has 6480 states and 7773 transitions. [2020-10-27 18:13:07,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:13:07,794 INFO L276 IsEmpty]: Start isEmpty. Operand 6480 states and 7773 transitions. [2020-10-27 18:13:07,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2020-10-27 18:13:07,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:13:07,820 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:13:07,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 18:13:07,821 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:13:07,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:13:07,822 INFO L82 PathProgramCache]: Analyzing trace with hash -680557177, now seen corresponding path program 1 times [2020-10-27 18:13:07,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:13:07,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898172416] [2020-10-27 18:13:07,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:13:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:08,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:08,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:08,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:10,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:12,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:12,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 786 [2020-10-27 18:13:12,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:13:12,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 18:13:12,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:12,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:13:12,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 229 [2020-10-27 18:13:12,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-27 18:13:12,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:13,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:13:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:13,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:13,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:13,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:13:13,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:13,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:13:13,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:13,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:13,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:13,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:13,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:13,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:13:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:13,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:13,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:13,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:13:13,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:13,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:13:13,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:13,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:13,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:13,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:13,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:13,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-27 18:13:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:13,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:13,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:13,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 18:13:13,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:13,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 18:13:13,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:13:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 18:13:13,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:13,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-27 18:13:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:13,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:13,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:13,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:13:13,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:13,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-27 18:13:13,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:13,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:13:13,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:13:13,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-27 18:13:13,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:13,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-27 18:13:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:13,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:13,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:13,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 18:13:13,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:13,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 18:13:13,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:13,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:13,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-27 18:13:13,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:13,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:13,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2020-10-27 18:13:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:13,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:13,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:13,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 18:13:13,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:13,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 18:13:13,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:13,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:13,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 18:13:13,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:13,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:14,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1376 backedges. 367 proven. 328 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2020-10-27 18:13:14,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898172416] [2020-10-27 18:13:14,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:13:14,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:13:14,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948682752] [2020-10-27 18:13:14,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:13:14,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:13:14,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:13:14,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:13:14,561 INFO L87 Difference]: Start difference. First operand 6480 states and 7773 transitions. Second operand 7 states. [2020-10-27 18:13:17,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:13:17,640 INFO L93 Difference]: Finished difference Result 14462 states and 18291 transitions. [2020-10-27 18:13:17,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:13:17,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 766 [2020-10-27 18:13:17,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:13:17,667 INFO L225 Difference]: With dead ends: 14462 [2020-10-27 18:13:17,668 INFO L226 Difference]: Without dead ends: 6102 [2020-10-27 18:13:17,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:13:17,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6102 states. [2020-10-27 18:13:17,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6102 to 5914. [2020-10-27 18:13:17,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5914 states. [2020-10-27 18:13:17,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5914 states to 5914 states and 6968 transitions. [2020-10-27 18:13:17,870 INFO L78 Accepts]: Start accepts. Automaton has 5914 states and 6968 transitions. Word has length 766 [2020-10-27 18:13:17,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:13:17,871 INFO L481 AbstractCegarLoop]: Abstraction has 5914 states and 6968 transitions. [2020-10-27 18:13:17,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:13:17,871 INFO L276 IsEmpty]: Start isEmpty. Operand 5914 states and 6968 transitions. [2020-10-27 18:13:17,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2020-10-27 18:13:17,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:13:17,898 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:13:17,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 18:13:17,898 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:13:17,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:13:17,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1804727581, now seen corresponding path program 1 times [2020-10-27 18:13:17,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:13:17,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734956783] [2020-10-27 18:13:17,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:13:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:18,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:18,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:18,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:23,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:23,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 832 [2020-10-27 18:13:23,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:13:23,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 18:13:23,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:23,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:13:23,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 275 [2020-10-27 18:13:23,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-27 18:13:23,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:23,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:13:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:23,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:23,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:23,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:13:23,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:23,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:13:23,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:23,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:23,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:23,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:23,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:23,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:13:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:23,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:23,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:23,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:13:23,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:23,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:13:23,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:23,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:23,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:23,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:23,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:23,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-27 18:13:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:23,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:23,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:23,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 18:13:23,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:23,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 18:13:23,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:23,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:13:23,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:23,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-27 18:13:23,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:23,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-10-27 18:13:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:23,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:23,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:23,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:13:23,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:23,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-27 18:13:23,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:23,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:13:23,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:13:23,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-27 18:13:23,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:23,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-10-27 18:13:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:23,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:23,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:23,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 18:13:23,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:23,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 18:13:23,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-27 18:13:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:23,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:23,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 632 [2020-10-27 18:13:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:23,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:23,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:23,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 18:13:23,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:23,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 18:13:23,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:23,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:23,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 18:13:23,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:23,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 413 proven. 328 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-27 18:13:24,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734956783] [2020-10-27 18:13:24,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:13:24,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:13:24,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825480780] [2020-10-27 18:13:24,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:13:24,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:13:24,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:13:24,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:13:24,390 INFO L87 Difference]: Start difference. First operand 5914 states and 6968 transitions. Second operand 7 states. [2020-10-27 18:13:28,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:13:28,154 INFO L93 Difference]: Finished difference Result 14516 states and 17768 transitions. [2020-10-27 18:13:28,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:13:28,155 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 812 [2020-10-27 18:13:28,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:13:28,193 INFO L225 Difference]: With dead ends: 14516 [2020-10-27 18:13:28,193 INFO L226 Difference]: Without dead ends: 9158 [2020-10-27 18:13:28,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:13:28,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9158 states. [2020-10-27 18:13:28,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9158 to 7666. [2020-10-27 18:13:28,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7666 states. [2020-10-27 18:13:28,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7666 states to 7666 states and 9240 transitions. [2020-10-27 18:13:28,485 INFO L78 Accepts]: Start accepts. Automaton has 7666 states and 9240 transitions. Word has length 812 [2020-10-27 18:13:28,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:13:28,486 INFO L481 AbstractCegarLoop]: Abstraction has 7666 states and 9240 transitions. [2020-10-27 18:13:28,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:13:28,486 INFO L276 IsEmpty]: Start isEmpty. Operand 7666 states and 9240 transitions. [2020-10-27 18:13:28,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2020-10-27 18:13:28,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:13:28,527 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-27 18:13:28,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 18:13:28,528 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:13:28,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:13:28,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1007161171, now seen corresponding path program 1 times [2020-10-27 18:13:28,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:13:28,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109675541] [2020-10-27 18:13:28,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:13:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:28,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:28,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:29,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:31,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:33,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:33,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 841 [2020-10-27 18:13:33,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:13:33,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 18:13:33,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:33,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:13:33,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-27 18:13:33,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-27 18:13:33,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:33,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:13:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:33,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:33,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:33,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:13:33,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:33,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:13:33,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:33,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:33,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:33,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:33,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:33,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:13:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:33,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:33,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:33,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 18:13:33,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:33,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 18:13:33,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:33,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:33,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:33,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:33,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:33,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-27 18:13:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:33,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:33,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:33,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 18:13:33,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:33,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 18:13:33,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:33,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:13:33,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:33,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-27 18:13:33,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:34,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-10-27 18:13:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:34,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:34,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:34,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:13:34,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:34,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-27 18:13:34,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:13:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:13:34,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-27 18:13:34,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 99 [2020-10-27 18:13:34,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-27 18:13:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:34,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:34,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:34,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 18:13:34,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:34,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 18:13:34,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:34,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:34,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-27 18:13:34,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:34,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:34,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 641 [2020-10-27 18:13:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:34,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:34,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:34,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 18:13:34,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:34,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 18:13:34,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:34,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:34,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 18:13:34,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:34,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:35,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1566 backedges. 422 proven. 328 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2020-10-27 18:13:35,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109675541] [2020-10-27 18:13:35,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:13:35,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:13:35,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174406071] [2020-10-27 18:13:35,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:13:35,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:13:35,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:13:35,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:13:35,131 INFO L87 Difference]: Start difference. First operand 7666 states and 9240 transitions. Second operand 8 states. [2020-10-27 18:13:39,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:13:39,823 INFO L93 Difference]: Finished difference Result 13986 states and 16739 transitions. [2020-10-27 18:13:39,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 18:13:39,824 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 821 [2020-10-27 18:13:39,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:13:39,833 INFO L225 Difference]: With dead ends: 13986 [2020-10-27 18:13:39,833 INFO L226 Difference]: Without dead ends: 2731 [2020-10-27 18:13:39,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 18:13:39,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2731 states. [2020-10-27 18:13:39,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2731 to 2183. [2020-10-27 18:13:39,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2183 states. [2020-10-27 18:13:39,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 2231 transitions. [2020-10-27 18:13:39,894 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 2231 transitions. Word has length 821 [2020-10-27 18:13:39,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:13:39,894 INFO L481 AbstractCegarLoop]: Abstraction has 2183 states and 2231 transitions. [2020-10-27 18:13:39,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:13:39,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 2231 transitions. [2020-10-27 18:13:39,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2020-10-27 18:13:39,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:13:39,904 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:13:39,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 18:13:39,905 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:13:39,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:13:39,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1193826753, now seen corresponding path program 1 times [2020-10-27 18:13:39,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:13:39,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839975104] [2020-10-27 18:13:39,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:13:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:40,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:40,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:40,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:41,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:45,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:45,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 855 [2020-10-27 18:13:45,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:13:45,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 18:13:45,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:45,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 18:13:45,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 298 [2020-10-27 18:13:45,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-27 18:13:45,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:45,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:13:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:45,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:45,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:45,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:13:45,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:45,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:13:45,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:45,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:45,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:45,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:45,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:45,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:13:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:45,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:45,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:45,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:13:45,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:45,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 18:13:45,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:45,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:45,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:45,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:45,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:45,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 18:13:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:45,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:45,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:45,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:13:45,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:45,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-27 18:13:45,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:45,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:13:45,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:45,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-27 18:13:45,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:45,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-27 18:13:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:45,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:45,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:46,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:46,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:13:46,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:13:46,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 638 [2020-10-27 18:13:46,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 18:13:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:13:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-27 18:13:46,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:46,925 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 50 [2020-10-27 18:13:47,163 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-10-27 18:13:47,421 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2020-10-27 18:13:47,695 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2020-10-27 18:13:47,985 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2020-10-27 18:13:48,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2020-10-27 18:13:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:48,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:48,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:48,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 18:13:48,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:48,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 18:13:48,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:48,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:48,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-27 18:13:48,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:48,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:48,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 655 [2020-10-27 18:13:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:48,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:48,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:48,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 18:13:48,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:48,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 18:13:48,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 18:13:48,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:48,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:50,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1563 backedges. 436 proven. 328 refuted. 0 times theorem prover too weak. 799 trivial. 0 not checked. [2020-10-27 18:13:50,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839975104] [2020-10-27 18:13:50,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:13:50,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 18:13:50,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978997668] [2020-10-27 18:13:50,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 18:13:50,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:13:50,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 18:13:50,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:13:50,981 INFO L87 Difference]: Start difference. First operand 2183 states and 2231 transitions. Second operand 13 states. [2020-10-27 18:13:51,842 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 90 [2020-10-27 18:13:52,211 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 94 [2020-10-27 18:13:52,671 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 98 [2020-10-27 18:13:53,069 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 102 [2020-10-27 18:13:53,745 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 106 [2020-10-27 18:13:54,321 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 119 [2020-10-27 18:13:54,855 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 77 [2020-10-27 18:13:55,241 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-27 18:13:56,013 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 83 [2020-10-27 18:13:56,415 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 89 [2020-10-27 18:13:56,909 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 91 [2020-10-27 18:13:57,305 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 96 [2020-10-27 18:13:57,939 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 99 [2020-10-27 18:13:58,554 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 102 [2020-10-27 18:13:58,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:13:58,847 INFO L93 Difference]: Finished difference Result 4176 states and 4281 transitions. [2020-10-27 18:13:58,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 18:13:58,848 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 835 [2020-10-27 18:13:58,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:13:58,855 INFO L225 Difference]: With dead ends: 4176 [2020-10-27 18:13:58,855 INFO L226 Difference]: Without dead ends: 2257 [2020-10-27 18:13:58,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=252, Invalid=618, Unknown=0, NotChecked=0, Total=870 [2020-10-27 18:13:58,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2020-10-27 18:13:58,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257. [2020-10-27 18:13:58,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2257 states. [2020-10-27 18:13:58,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 2306 transitions. [2020-10-27 18:13:58,907 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 2306 transitions. Word has length 835 [2020-10-27 18:13:58,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:13:58,908 INFO L481 AbstractCegarLoop]: Abstraction has 2257 states and 2306 transitions. [2020-10-27 18:13:58,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 18:13:58,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 2306 transitions. [2020-10-27 18:13:58,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 912 [2020-10-27 18:13:58,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:13:58,920 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:13:58,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 18:13:58,920 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:13:58,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:13:58,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1071082586, now seen corresponding path program 1 times [2020-10-27 18:13:58,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:13:58,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632043835] [2020-10-27 18:13:58,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:13:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:59,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:59,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:59,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:59,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:04,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:04,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 933 [2020-10-27 18:14:04,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:14:04,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 18:14:04,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:04,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:14:04,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 376 [2020-10-27 18:14:04,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 366 [2020-10-27 18:14:04,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:04,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:14:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:04,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:04,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:04,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:14:04,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:04,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:14:04,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:04,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:14:04,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:14:04,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:14:04,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:04,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:14:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:04,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:04,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:04,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:14:04,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:04,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 18:14:04,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:04,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:14:04,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:14:04,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:14:04,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:04,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 18:14:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:04,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:04,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:04,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:14:04,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:04,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 18:14:04,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:04,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:14:04,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:14:04,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:14:04,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:04,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-27 18:14:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:04,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:04,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:04,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:14:04,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:04,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 18:14:04,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:04,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:14:04,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:14:04,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 18:14:04,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:04,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-10-27 18:14:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:04,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:04,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:04,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:14:04,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:04,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-27 18:14:04,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:04,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:14:04,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:14:04,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-27 18:14:04,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:04,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2020-10-27 18:14:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:04,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:05,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:05,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 18:14:05,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:05,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-27 18:14:05,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:05,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:14:05,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:14:05,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-27 18:14:05,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:05,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 731 [2020-10-27 18:14:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:05,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:05,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:05,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 18:14:05,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:05,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 18:14:05,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:05,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:14:05,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 18:14:05,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:14:05,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:05,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 902 proven. 304 refuted. 0 times theorem prover too weak. 764 trivial. 0 not checked. [2020-10-27 18:14:05,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632043835] [2020-10-27 18:14:05,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:14:05,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 18:14:05,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986665668] [2020-10-27 18:14:05,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 18:14:05,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:14:05,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 18:14:05,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 18:14:05,740 INFO L87 Difference]: Start difference. First operand 2257 states and 2306 transitions. Second operand 9 states. [2020-10-27 18:14:08,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:14:08,164 INFO L93 Difference]: Finished difference Result 3276 states and 3339 transitions. [2020-10-27 18:14:08,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 18:14:08,165 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 911 [2020-10-27 18:14:08,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:14:08,172 INFO L225 Difference]: With dead ends: 3276 [2020-10-27 18:14:08,172 INFO L226 Difference]: Without dead ends: 2579 [2020-10-27 18:14:08,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-27 18:14:08,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2020-10-27 18:14:08,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 2441. [2020-10-27 18:14:08,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2441 states. [2020-10-27 18:14:08,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2441 states to 2441 states and 2493 transitions. [2020-10-27 18:14:08,220 INFO L78 Accepts]: Start accepts. Automaton has 2441 states and 2493 transitions. Word has length 911 [2020-10-27 18:14:08,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:14:08,221 INFO L481 AbstractCegarLoop]: Abstraction has 2441 states and 2493 transitions. [2020-10-27 18:14:08,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 18:14:08,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2441 states and 2493 transitions. [2020-10-27 18:14:08,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1052 [2020-10-27 18:14:08,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:14:08,233 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:14:08,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 18:14:08,234 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:14:08,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:14:08,234 INFO L82 PathProgramCache]: Analyzing trace with hash -2126930847, now seen corresponding path program 1 times [2020-10-27 18:14:08,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:14:08,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003062814] [2020-10-27 18:14:08,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:14:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:08,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:08,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:08,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:08,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:10,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:13,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:13,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1075 [2020-10-27 18:14:13,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:14:13,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 18:14:13,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:13,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:14:13,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 557 [2020-10-27 18:14:13,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-27 18:14:13,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:13,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:14:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:13,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:13,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:13,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:14:13,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:13,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:14:13,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:14:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:14:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:14:13,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:13,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:14:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:13,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:13,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:13,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:14:13,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:13,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:14:13,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:13,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:14:13,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:14:13,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:14:13,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:13,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 18:14:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:13,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:13,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:13,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:14:13,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:13,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:14:13,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:13,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:14:13,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:14:13,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:14:13,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:13,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-27 18:14:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:13,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:13,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:13,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:14:13,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:13,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:14:13,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:13,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:14:13,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:14:13,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:14:13,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:13,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-10-27 18:14:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:13,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:13,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:13,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:14:13,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:13,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-27 18:14:13,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:13,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:14:13,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:14:13,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-27 18:14:13,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:13,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2020-10-27 18:14:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:13,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:14,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:14,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 18:14:14,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:14,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 18:14:14,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:14,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:14:14,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:14:14,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-27 18:14:14,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:14,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 689 [2020-10-27 18:14:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:14,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:14,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:14,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 18:14:14,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:14,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 18:14:14,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:14,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:14:14,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-27 18:14:14,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:14:14,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:14,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 871 [2020-10-27 18:14:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:14,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:14,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:14,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 18:14:14,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:14,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 18:14:14,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:14,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:14:14,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 18:14:14,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:14:14,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:14,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2742 backedges. 689 proven. 276 refuted. 0 times theorem prover too weak. 1777 trivial. 0 not checked. [2020-10-27 18:14:14,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003062814] [2020-10-27 18:14:14,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:14:14,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:14:14,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799970206] [2020-10-27 18:14:14,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:14:14,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:14:14,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:14:14,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:14:14,828 INFO L87 Difference]: Start difference. First operand 2441 states and 2493 transitions. Second operand 7 states. [2020-10-27 18:14:16,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:14:16,827 INFO L93 Difference]: Finished difference Result 3632 states and 3738 transitions. [2020-10-27 18:14:16,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:14:16,828 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1051 [2020-10-27 18:14:16,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:14:16,833 INFO L225 Difference]: With dead ends: 3632 [2020-10-27 18:14:16,834 INFO L226 Difference]: Without dead ends: 2489 [2020-10-27 18:14:16,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:14:16,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2020-10-27 18:14:16,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 2441. [2020-10-27 18:14:16,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2441 states. [2020-10-27 18:14:16,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2441 states to 2441 states and 2487 transitions. [2020-10-27 18:14:16,885 INFO L78 Accepts]: Start accepts. Automaton has 2441 states and 2487 transitions. Word has length 1051 [2020-10-27 18:14:16,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:14:16,887 INFO L481 AbstractCegarLoop]: Abstraction has 2441 states and 2487 transitions. [2020-10-27 18:14:16,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:14:16,887 INFO L276 IsEmpty]: Start isEmpty. Operand 2441 states and 2487 transitions. [2020-10-27 18:14:16,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1170 [2020-10-27 18:14:16,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:14:16,903 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:14:16,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 18:14:16,903 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:14:16,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:14:16,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1406977016, now seen corresponding path program 1 times [2020-10-27 18:14:16,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:14:16,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243296594] [2020-10-27 18:14:16,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:14:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:17,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:17,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:17,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:22,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:22,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1195 [2020-10-27 18:14:22,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:14:22,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 18:14:22,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:22,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 18:14:22,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-27 18:14:22,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-27 18:14:22,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:22,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:14:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:22,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:22,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:22,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:14:22,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:22,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:14:22,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:22,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:14:22,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:14:22,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:14:22,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:22,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:14:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:22,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:22,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:22,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:14:22,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:22,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 18:14:22,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:14:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:14:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 18:14:22,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:22,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 18:14:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:22,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:22,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:22,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:22,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:14:22,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:14:22,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-10-27 18:14:22,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:22,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 18:14:22,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:14:22,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-27 18:14:22,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:23,541 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2020-10-27 18:14:23,818 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2020-10-27 18:14:24,106 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2020-10-27 18:14:24,399 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2020-10-27 18:14:24,714 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2020-10-27 18:14:25,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-27 18:14:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:25,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:25,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:25,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:14:25,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:25,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:14:25,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:14:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-27 18:14:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:14:25,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:25,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-10-27 18:14:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:25,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:25,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:25,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:14:25,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:25,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 18:14:25,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:25,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:14:25,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-27 18:14:25,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:14:25,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:25,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2020-10-27 18:14:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:25,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:25,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:25,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 18:14:25,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:25,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:14:25,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:25,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:14:25,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-27 18:14:25,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:14:25,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:25,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 667 [2020-10-27 18:14:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:25,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:25,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:25,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 18:14:25,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:25,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-27 18:14:25,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:25,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:14:25,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-27 18:14:25,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:14:25,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:25,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 807 [2020-10-27 18:14:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:25,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:25,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:25,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 18:14:25,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:25,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 18:14:25,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:25,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:14:25,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-27 18:14:25,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:14:25,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:25,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 989 [2020-10-27 18:14:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:14:25,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:14:25,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:14:25,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 18:14:25,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:14:25,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 18:14:25,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:14:25,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:14:25,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 18:14:25,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:14:25,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:14:28,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3544 backedges. 346 proven. 825 refuted. 0 times theorem prover too weak. 2373 trivial. 0 not checked. [2020-10-27 18:14:28,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243296594] [2020-10-27 18:14:28,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:14:28,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 18:14:28,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189798003] [2020-10-27 18:14:28,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 18:14:28,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:14:28,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 18:14:28,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-27 18:14:28,545 INFO L87 Difference]: Start difference. First operand 2441 states and 2487 transitions. Second operand 14 states. [2020-10-27 18:14:30,381 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-10-27 18:14:30,820 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 107 [2020-10-27 18:14:31,413 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 89 [2020-10-27 18:14:31,895 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-27 18:14:32,362 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 111 [2020-10-27 18:14:33,268 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 113 [2020-10-27 18:14:33,788 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 116 [2020-10-27 18:14:34,798 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 130 [2020-10-27 18:14:36,063 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 88 [2020-10-27 18:14:36,512 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 93 [2020-10-27 18:14:37,142 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 95