/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/Problem18_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:05:22,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:05:22,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:05:22,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:05:22,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:05:22,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:05:22,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:05:22,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:05:22,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:05:22,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:05:22,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:05:22,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:05:22,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:05:22,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:05:22,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:05:22,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:05:22,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:05:22,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:05:22,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:05:22,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:05:22,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:05:22,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:05:22,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:05:22,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:05:22,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:05:22,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:05:22,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:05:22,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:05:22,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:05:22,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:05:22,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:05:22,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:05:22,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:05:22,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:05:22,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:05:22,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:05:22,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:05:22,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:05:22,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:05:22,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:05:22,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:05:22,739 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 19:05:22,792 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:05:22,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:05:22,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:05:22,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:05:22,797 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:05:22,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:05:22,799 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:05:22,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:05:22,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:05:22,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:05:22,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:05:22,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:05:22,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:05:22,801 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:05:22,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:05:22,802 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:05:22,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:05:22,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:05:22,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:05:22,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:05:22,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:05:22,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:05:22,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:05:22,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:05:22,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:05:22,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:05:22,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:05:22,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:05:22,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:05:22,808 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:05:23,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:05:23,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:05:23,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:05:23,424 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:05:23,425 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:05:23,427 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label08.c [2020-10-27 19:05:23,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3144bd1b1/d2254ed54db04106863e2f6074234fe7/FLAG53a84d2cb [2020-10-27 19:05:24,775 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:05:24,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label08.c [2020-10-27 19:05:24,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3144bd1b1/d2254ed54db04106863e2f6074234fe7/FLAG53a84d2cb [2020-10-27 19:05:25,174 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3144bd1b1/d2254ed54db04106863e2f6074234fe7 [2020-10-27 19:05:25,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:05:25,185 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:05:25,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:05:25,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:05:25,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:05:25,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:05:25" (1/1) ... [2020-10-27 19:05:25,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2168ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:05:25, skipping insertion in model container [2020-10-27 19:05:25,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:05:25" (1/1) ... [2020-10-27 19:05:25,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:05:25,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:05:26,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:05:26,738 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:05:27,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:05:27,720 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:05:27,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:05:27 WrapperNode [2020-10-27 19:05:27,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:05:27,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:05:27,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:05:27,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:05:27,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:05:27" (1/1) ... [2020-10-27 19:05:27,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:05:27" (1/1) ... [2020-10-27 19:05:27,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:05:27" (1/1) ... [2020-10-27 19:05:27,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:05:27" (1/1) ... [2020-10-27 19:05:27,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:05:27" (1/1) ... [2020-10-27 19:05:27,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:05:27" (1/1) ... [2020-10-27 19:05:28,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:05:27" (1/1) ... [2020-10-27 19:05:28,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:05:28,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:05:28,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:05:28,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:05:28,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:05:27" (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 19:05:28,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:05:28,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:05:28,205 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:05:28,205 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 19:05:28,205 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 19:05:28,206 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 19:05:28,207 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:05:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 19:05:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 19:05:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 19:05:28,209 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:05:28,209 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:05:28,210 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:05:28,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:05:28,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:05:28,211 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 19:05:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:05:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:05:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:05:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:05:28,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:05:28,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:05:28,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:05:32,421 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:05:32,421 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 19:05:32,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:05:32 BoogieIcfgContainer [2020-10-27 19:05:32,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:05:32,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:05:32,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:05:32,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:05:32,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:05:25" (1/3) ... [2020-10-27 19:05:32,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae81caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:05:32, skipping insertion in model container [2020-10-27 19:05:32,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:05:27" (2/3) ... [2020-10-27 19:05:32,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae81caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:05:32, skipping insertion in model container [2020-10-27 19:05:32,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:05:32" (3/3) ... [2020-10-27 19:05:32,443 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label08.c [2020-10-27 19:05:32,459 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:05:32,466 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:05:32,483 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:05:32,537 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:05:32,538 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:05:32,538 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:05:32,538 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:05:32,538 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:05:32,538 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:05:32,538 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:05:32,538 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:05:32,595 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 19:05:32,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 19:05:32,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:05:32,606 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] [2020-10-27 19:05:32,606 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:05:32,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:05:32,617 INFO L82 PathProgramCache]: Analyzing trace with hash -924456968, now seen corresponding path program 1 times [2020-10-27 19:05:32,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:05:32,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927886365] [2020-10-27 19:05:32,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:05:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:33,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:33,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:33,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 19:05:33,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:33,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-10-27 19:05:33,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:33,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:05:33,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:05:33,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 19:05:33,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:05:33,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:05:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:33,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:33,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:33,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:05:33,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:33,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 19:05:33,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:33,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:05:33,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:33,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:05:33,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:33,829 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 19:05:33,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927886365] [2020-10-27 19:05:33,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:05:33,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:05:33,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638335517] [2020-10-27 19:05:33,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:05:33,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:05:33,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:05:33,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:05:33,869 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-27 19:05:48,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:05:48,111 INFO L93 Difference]: Finished difference Result 2989 states and 5773 transitions. [2020-10-27 19:05:48,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 19:05:48,115 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-27 19:05:48,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:05:48,155 INFO L225 Difference]: With dead ends: 2989 [2020-10-27 19:05:48,156 INFO L226 Difference]: Without dead ends: 2143 [2020-10-27 19:05:48,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:05:48,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-27 19:05:48,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-27 19:05:48,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-27 19:05:48,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3564 transitions. [2020-10-27 19:05:48,437 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3564 transitions. Word has length 28 [2020-10-27 19:05:48,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:05:48,438 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3564 transitions. [2020-10-27 19:05:48,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:05:48,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3564 transitions. [2020-10-27 19:05:48,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 19:05:48,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:05:48,444 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 19:05:48,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:05:48,445 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:05:48,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:05:48,446 INFO L82 PathProgramCache]: Analyzing trace with hash -34524000, now seen corresponding path program 1 times [2020-10-27 19:05:48,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:05:48,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360189575] [2020-10-27 19:05:48,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:05:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:48,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:48,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:49,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:49,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 19:05:49,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:05:49,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 844 [2020-10-27 19:05:49,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:49,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:05:49,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 19:05:49,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 19:05:49,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:05:49,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:05:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:49,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:49,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:49,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:05:49,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:49,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 19:05:49,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:49,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:05:49,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:05:49,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:49,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:05:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:05:49,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:05:49,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:05:49,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 19:05:49,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:05:49,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 19:05:49,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:05:49,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:05:49,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:05:49,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 19:05:49,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:05:49,695 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:05:49,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360189575] [2020-10-27 19:05:49,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:05:49,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:05:49,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659761093] [2020-10-27 19:05:49,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:05:49,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:05:49,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:05:49,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:05:49,703 INFO L87 Difference]: Start difference. First operand 2136 states and 3564 transitions. Second operand 5 states. [2020-10-27 19:06:01,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:06:01,244 INFO L93 Difference]: Finished difference Result 6408 states and 10790 transitions. [2020-10-27 19:06:01,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:06:01,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-27 19:06:01,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:06:01,273 INFO L225 Difference]: With dead ends: 6408 [2020-10-27 19:06:01,274 INFO L226 Difference]: Without dead ends: 4278 [2020-10-27 19:06:01,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:06:01,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4278 states. [2020-10-27 19:06:01,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4278 to 4274. [2020-10-27 19:06:01,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4274 states. [2020-10-27 19:06:01,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4274 states to 4274 states and 6376 transitions. [2020-10-27 19:06:01,418 INFO L78 Accepts]: Start accepts. Automaton has 4274 states and 6376 transitions. Word has length 98 [2020-10-27 19:06:01,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:06:01,418 INFO L481 AbstractCegarLoop]: Abstraction has 4274 states and 6376 transitions. [2020-10-27 19:06:01,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:06:01,419 INFO L276 IsEmpty]: Start isEmpty. Operand 4274 states and 6376 transitions. [2020-10-27 19:06:01,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 19:06:01,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:06:01,422 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 19:06:01,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:06:01,423 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:06:01,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:06:01,423 INFO L82 PathProgramCache]: Analyzing trace with hash 768682520, now seen corresponding path program 1 times [2020-10-27 19:06:01,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:06:01,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120025459] [2020-10-27 19:06:01,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:06:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:01,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:01,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:02,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:02,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 19:06:02,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:06:02,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 994 [2020-10-27 19:06:02,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:06:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-27 19:06:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 19:06:02,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:02,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:06:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:02,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:02,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:02,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:06:02,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:02,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 19:06:02,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:02,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:06:02,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:02,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:06:02,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:02,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:06:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:02,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:02,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:02,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 19:06:02,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:02,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 19:06:02,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:02,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:06:02,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:02,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 19:06:02,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:02,863 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:06:02,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120025459] [2020-10-27 19:06:02,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:06:02,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:06:02,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895129581] [2020-10-27 19:06:02,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:06:02,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:06:02,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:06:02,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:06:02,869 INFO L87 Difference]: Start difference. First operand 4274 states and 6376 transitions. Second operand 5 states. [2020-10-27 19:06:15,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:06:15,163 INFO L93 Difference]: Finished difference Result 12809 states and 19381 transitions. [2020-10-27 19:06:15,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:06:15,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-27 19:06:15,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:06:15,220 INFO L225 Difference]: With dead ends: 12809 [2020-10-27 19:06:15,220 INFO L226 Difference]: Without dead ends: 8541 [2020-10-27 19:06:15,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:06:15,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8541 states. [2020-10-27 19:06:15,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8541 to 8537. [2020-10-27 19:06:15,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8537 states. [2020-10-27 19:06:15,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8537 states to 8537 states and 11507 transitions. [2020-10-27 19:06:15,588 INFO L78 Accepts]: Start accepts. Automaton has 8537 states and 11507 transitions. Word has length 102 [2020-10-27 19:06:15,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:06:15,589 INFO L481 AbstractCegarLoop]: Abstraction has 8537 states and 11507 transitions. [2020-10-27 19:06:15,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:06:15,590 INFO L276 IsEmpty]: Start isEmpty. Operand 8537 states and 11507 transitions. [2020-10-27 19:06:15,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 19:06:15,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:06:15,603 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 19:06:15,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:06:15,603 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:06:15,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:06:15,604 INFO L82 PathProgramCache]: Analyzing trace with hash 727900514, now seen corresponding path program 1 times [2020-10-27 19:06:15,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:06:15,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083984836] [2020-10-27 19:06:15,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:06:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:15,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:15,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:16,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:16,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:16,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 19:06:16,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:06:16,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 902 [2020-10-27 19:06:16,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:16,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:06:16,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-27 19:06:16,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 19:06:16,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:16,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:06:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:16,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:16,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:16,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:06:16,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:16,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 19:06:16,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:16,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:06:16,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:16,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:06:16,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:16,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:06:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:16,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:16,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:16,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 19:06:16,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:16,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-27 19:06:16,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:16,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:06:16,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:16,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 19:06:16,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:16,988 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:06:16,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083984836] [2020-10-27 19:06:16,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:06:16,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:06:16,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20047667] [2020-10-27 19:06:16,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:06:16,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:06:16,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:06:16,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:06:16,994 INFO L87 Difference]: Start difference. First operand 8537 states and 11507 transitions. Second operand 5 states. [2020-10-27 19:06:30,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:06:30,662 INFO L93 Difference]: Finished difference Result 24873 states and 34063 transitions. [2020-10-27 19:06:30,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:06:30,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-27 19:06:30,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:06:30,799 INFO L225 Difference]: With dead ends: 24873 [2020-10-27 19:06:30,800 INFO L226 Difference]: Without dead ends: 16342 [2020-10-27 19:06:30,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:06:30,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16342 states. [2020-10-27 19:06:31,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16342 to 16338. [2020-10-27 19:06:31,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16338 states. [2020-10-27 19:06:31,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16338 states to 16338 states and 21373 transitions. [2020-10-27 19:06:31,243 INFO L78 Accepts]: Start accepts. Automaton has 16338 states and 21373 transitions. Word has length 123 [2020-10-27 19:06:31,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:06:31,245 INFO L481 AbstractCegarLoop]: Abstraction has 16338 states and 21373 transitions. [2020-10-27 19:06:31,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:06:31,245 INFO L276 IsEmpty]: Start isEmpty. Operand 16338 states and 21373 transitions. [2020-10-27 19:06:31,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-27 19:06:31,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:06:31,250 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 19:06:31,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:06:31,250 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:06:31,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:06:31,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1318212680, now seen corresponding path program 1 times [2020-10-27 19:06:31,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:06:31,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903805545] [2020-10-27 19:06:31,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:06:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:31,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:31,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:32,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:32,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 19:06:32,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:06:32,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1059 [2020-10-27 19:06:32,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:32,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:06:32,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-27 19:06:32,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 19:06:32,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:32,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:06:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:32,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:32,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:32,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:06:32,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:32,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:06:32,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:32,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:06:32,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:32,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:06:32,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:32,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:06:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:32,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:32,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:32,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 19:06:32,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:32,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 19:06:32,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:32,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:06:32,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:32,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 19:06:32,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:06:32,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903805545] [2020-10-27 19:06:32,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:06:32,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:06:32,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711050033] [2020-10-27 19:06:32,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:06:32,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:06:32,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:06:32,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:06:32,718 INFO L87 Difference]: Start difference. First operand 16338 states and 21373 transitions. Second operand 5 states. [2020-10-27 19:06:45,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:06:45,982 INFO L93 Difference]: Finished difference Result 39757 states and 53719 transitions. [2020-10-27 19:06:45,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:06:45,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-27 19:06:45,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:06:46,094 INFO L225 Difference]: With dead ends: 39757 [2020-10-27 19:06:46,094 INFO L226 Difference]: Without dead ends: 23425 [2020-10-27 19:06:46,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:06:46,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23425 states. [2020-10-27 19:06:46,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23425 to 23417. [2020-10-27 19:06:46,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23417 states. [2020-10-27 19:06:46,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23417 states to 23417 states and 30407 transitions. [2020-10-27 19:06:46,797 INFO L78 Accepts]: Start accepts. Automaton has 23417 states and 30407 transitions. Word has length 150 [2020-10-27 19:06:46,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:06:46,798 INFO L481 AbstractCegarLoop]: Abstraction has 23417 states and 30407 transitions. [2020-10-27 19:06:46,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:06:46,798 INFO L276 IsEmpty]: Start isEmpty. Operand 23417 states and 30407 transitions. [2020-10-27 19:06:46,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-27 19:06:46,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:06:46,805 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:06:46,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:06:46,805 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:06:46,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:06:46,806 INFO L82 PathProgramCache]: Analyzing trace with hash -2066254012, now seen corresponding path program 1 times [2020-10-27 19:06:46,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:06:46,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073851396] [2020-10-27 19:06:46,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:06:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:46,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:47,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:48,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:48,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-27 19:06:48,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:06:48,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1209 [2020-10-27 19:06:48,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:48,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:06:48,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-27 19:06:48,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 19:06:48,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:48,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:06:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:48,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:48,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:48,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:06:48,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:48,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 19:06:48,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:48,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:06:48,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:48,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:06:48,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:48,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:06:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:06:48,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:06:48,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:06:48,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 19:06:48,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:06:48,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-27 19:06:48,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:06:48,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:06:48,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:06:48,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-27 19:06:48,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:06:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:06:48,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073851396] [2020-10-27 19:06:48,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:06:48,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:06:48,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219141564] [2020-10-27 19:06:48,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:06:48,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:06:48,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:06:48,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:06:48,566 INFO L87 Difference]: Start difference. First operand 23417 states and 30407 transitions. Second operand 5 states. [2020-10-27 19:07:01,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:07:01,005 INFO L93 Difference]: Finished difference Result 58875 states and 78536 transitions. [2020-10-27 19:07:01,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:07:01,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-10-27 19:07:01,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:07:01,205 INFO L225 Difference]: With dead ends: 58875 [2020-10-27 19:07:01,205 INFO L226 Difference]: Without dead ends: 35464 [2020-10-27 19:07:01,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:07:01,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35464 states. [2020-10-27 19:07:02,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35464 to 34754. [2020-10-27 19:07:02,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34754 states. [2020-10-27 19:07:02,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34754 states to 34754 states and 46191 transitions. [2020-10-27 19:07:02,173 INFO L78 Accepts]: Start accepts. Automaton has 34754 states and 46191 transitions. Word has length 176 [2020-10-27 19:07:02,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:07:02,174 INFO L481 AbstractCegarLoop]: Abstraction has 34754 states and 46191 transitions. [2020-10-27 19:07:02,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:07:02,174 INFO L276 IsEmpty]: Start isEmpty. Operand 34754 states and 46191 transitions. [2020-10-27 19:07:02,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-27 19:07:02,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:07:02,191 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:07:02,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:07:02,191 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:07:02,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:07:02,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1470899958, now seen corresponding path program 1 times [2020-10-27 19:07:02,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:07:02,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902746082] [2020-10-27 19:07:02,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:07:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:02,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:02,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:02,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:07,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:07,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-27 19:07:07,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:07:07,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 19:07:07,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:07,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:07:07,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 19:07:07,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 19:07:07,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:07,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:07:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:07,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:07,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:07,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:07:07,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:07,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:07:07,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:07,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:07,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:07,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:07,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:07,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:07:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:07,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:07,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:07,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 19:07:07,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:07,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 19:07:07,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:07,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:07:07,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:07,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 19:07:07,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:07,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 19:07:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:07,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:07,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:08,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:08,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 19:07:08,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:07:08,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 778 [2020-10-27 19:07:08,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:08,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:07:08,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:07:08,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-27 19:07:08,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:08,725 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2020-10-27 19:07:09,038 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-10-27 19:07:09,334 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-27 19:07:09,628 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-27 19:07:10,305 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:07:10,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902746082] [2020-10-27 19:07:10,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:07:10,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 19:07:10,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663305108] [2020-10-27 19:07:10,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 19:07:10,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:07:10,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 19:07:10,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 19:07:10,307 INFO L87 Difference]: Start difference. First operand 34754 states and 46191 transitions. Second operand 10 states. [2020-10-27 19:07:10,617 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 77 [2020-10-27 19:07:11,165 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 75 [2020-10-27 19:07:11,395 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 75 [2020-10-27 19:07:11,619 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 75 [2020-10-27 19:07:12,348 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2020-10-27 19:07:12,638 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 72 [2020-10-27 19:07:13,664 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2020-10-27 19:07:14,044 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-10-27 19:07:14,563 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-27 19:07:24,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:07:24,045 INFO L93 Difference]: Finished difference Result 70263 states and 94564 transitions. [2020-10-27 19:07:24,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 19:07:24,047 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 259 [2020-10-27 19:07:24,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:07:24,192 INFO L225 Difference]: With dead ends: 70263 [2020-10-27 19:07:24,193 INFO L226 Difference]: Without dead ends: 35394 [2020-10-27 19:07:24,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2020-10-27 19:07:24,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35394 states. [2020-10-27 19:07:25,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35394 to 34274. [2020-10-27 19:07:25,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34274 states. [2020-10-27 19:07:25,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34274 states to 34274 states and 41676 transitions. [2020-10-27 19:07:25,084 INFO L78 Accepts]: Start accepts. Automaton has 34274 states and 41676 transitions. Word has length 259 [2020-10-27 19:07:25,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:07:25,084 INFO L481 AbstractCegarLoop]: Abstraction has 34274 states and 41676 transitions. [2020-10-27 19:07:25,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 19:07:25,085 INFO L276 IsEmpty]: Start isEmpty. Operand 34274 states and 41676 transitions. [2020-10-27 19:07:25,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-27 19:07:25,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:07:25,100 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:07:25,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 19:07:25,101 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:07:25,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:07:25,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1474150274, now seen corresponding path program 1 times [2020-10-27 19:07:25,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:07:25,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663418382] [2020-10-27 19:07:25,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:07:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:25,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:25,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:27,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:27,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-27 19:07:27,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:07:27,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2122 [2020-10-27 19:07:27,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:27,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:07:27,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-27 19:07:27,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-27 19:07:27,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:27,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:07:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:27,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:27,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:27,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:07:27,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:27,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:07:27,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:27,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:27,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:27,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:27,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:27,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:07:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:27,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:27,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:27,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 19:07:27,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:27,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 19:07:27,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:27,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:07:27,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:27,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 19:07:27,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:27,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 19:07:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:27,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:27,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:27,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 19:07:27,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:27,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-27 19:07:27,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:27,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:07:27,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:07:27,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-27 19:07:27,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:28,176 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:07:28,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663418382] [2020-10-27 19:07:28,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:07:28,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:07:28,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802031842] [2020-10-27 19:07:28,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:07:28,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:07:28,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:07:28,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:07:28,186 INFO L87 Difference]: Start difference. First operand 34274 states and 41676 transitions. Second operand 7 states. [2020-10-27 19:07:38,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:07:38,142 INFO L93 Difference]: Finished difference Result 68864 states and 84762 transitions. [2020-10-27 19:07:38,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 19:07:38,143 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-10-27 19:07:38,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:07:38,321 INFO L225 Difference]: With dead ends: 68864 [2020-10-27 19:07:38,321 INFO L226 Difference]: Without dead ends: 34596 [2020-10-27 19:07:38,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-27 19:07:38,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34596 states. [2020-10-27 19:07:38,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34596 to 34539. [2020-10-27 19:07:38,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34539 states. [2020-10-27 19:07:39,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34539 states to 34539 states and 40287 transitions. [2020-10-27 19:07:39,018 INFO L78 Accepts]: Start accepts. Automaton has 34539 states and 40287 transitions. Word has length 263 [2020-10-27 19:07:39,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:07:39,019 INFO L481 AbstractCegarLoop]: Abstraction has 34539 states and 40287 transitions. [2020-10-27 19:07:39,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:07:39,020 INFO L276 IsEmpty]: Start isEmpty. Operand 34539 states and 40287 transitions. [2020-10-27 19:07:39,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-27 19:07:39,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:07:39,038 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:07:39,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 19:07:39,039 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:07:39,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:07:39,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1613973978, now seen corresponding path program 1 times [2020-10-27 19:07:39,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:07:39,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067186940] [2020-10-27 19:07:39,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:07:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:39,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:39,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:39,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:42,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:42,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-27 19:07:42,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:07:42,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3088 [2020-10-27 19:07:42,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:42,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:07:42,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 19:07:42,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-27 19:07:42,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:42,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:07:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:42,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:42,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:42,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:07:42,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:42,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:07:42,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:42,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:42,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:42,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:42,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:07:42,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:07:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:42,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:42,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:42,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 19:07:42,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:42,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 19:07:42,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:42,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:07:42,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:42,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 19:07:42,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:42,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 19:07:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:42,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:42,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:42,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 19:07:42,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:42,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-27 19:07:42,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:42,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:07:42,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:07:42,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-27 19:07:42,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:42,910 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:07:42,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067186940] [2020-10-27 19:07:42,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:07:42,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:07:42,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946952818] [2020-10-27 19:07:42,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:07:42,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:07:42,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:07:42,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:07:42,913 INFO L87 Difference]: Start difference. First operand 34539 states and 40287 transitions. Second operand 7 states. [2020-10-27 19:07:51,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:07:51,991 INFO L93 Difference]: Finished difference Result 79006 states and 93962 transitions. [2020-10-27 19:07:51,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 19:07:51,992 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 277 [2020-10-27 19:07:51,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:07:52,130 INFO L225 Difference]: With dead ends: 79006 [2020-10-27 19:07:52,131 INFO L226 Difference]: Without dead ends: 44473 [2020-10-27 19:07:52,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-27 19:07:52,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44473 states. [2020-10-27 19:07:53,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44473 to 43723. [2020-10-27 19:07:53,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43723 states. [2020-10-27 19:07:53,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43723 states to 43723 states and 51564 transitions. [2020-10-27 19:07:53,174 INFO L78 Accepts]: Start accepts. Automaton has 43723 states and 51564 transitions. Word has length 277 [2020-10-27 19:07:53,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:07:53,175 INFO L481 AbstractCegarLoop]: Abstraction has 43723 states and 51564 transitions. [2020-10-27 19:07:53,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:07:53,175 INFO L276 IsEmpty]: Start isEmpty. Operand 43723 states and 51564 transitions. [2020-10-27 19:07:53,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-27 19:07:53,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:07:53,490 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:07:53,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 19:07:53,490 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:07:53,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:07:53,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1526801814, now seen corresponding path program 1 times [2020-10-27 19:07:53,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:07:53,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566087923] [2020-10-27 19:07:53,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:07:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:53,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:53,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:55,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:56,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:56,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-27 19:07:56,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:07:56,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2507 [2020-10-27 19:07:56,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:07:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-27 19:07:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-27 19:07:56,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:56,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:07:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:56,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:56,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:56,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:07:56,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:56,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:07:56,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:56,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:07:56,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:56,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:07:56,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:56,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:07:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:56,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:56,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:56,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 19:07:56,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:56,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 19:07:56,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:56,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:07:56,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:07:56,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-27 19:07:56,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:56,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-27 19:07:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:07:56,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:07:56,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:07:56,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 19:07:56,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:07:56,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-27 19:07:56,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:07:56,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:07:56,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:07:56,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-27 19:07:56,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:07:57,361 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:07:57,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566087923] [2020-10-27 19:07:57,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:07:57,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 19:07:57,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938739355] [2020-10-27 19:07:57,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 19:07:57,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:07:57,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 19:07:57,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:07:57,364 INFO L87 Difference]: Start difference. First operand 43723 states and 51564 transitions. Second operand 8 states. [2020-10-27 19:08:10,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:08:10,285 INFO L93 Difference]: Finished difference Result 87577 states and 103392 transitions. [2020-10-27 19:08:10,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 19:08:10,286 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 339 [2020-10-27 19:08:10,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:08:10,370 INFO L225 Difference]: With dead ends: 87577 [2020-10-27 19:08:10,371 INFO L226 Difference]: Without dead ends: 42446 [2020-10-27 19:08:10,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-27 19:08:10,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42446 states. [2020-10-27 19:08:11,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42446 to 35402. [2020-10-27 19:08:11,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35402 states. [2020-10-27 19:08:11,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35402 states to 35402 states and 39201 transitions. [2020-10-27 19:08:11,210 INFO L78 Accepts]: Start accepts. Automaton has 35402 states and 39201 transitions. Word has length 339 [2020-10-27 19:08:11,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:08:11,210 INFO L481 AbstractCegarLoop]: Abstraction has 35402 states and 39201 transitions. [2020-10-27 19:08:11,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 19:08:11,211 INFO L276 IsEmpty]: Start isEmpty. Operand 35402 states and 39201 transitions. [2020-10-27 19:08:11,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-10-27 19:08:11,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:08:11,232 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-27 19:08:11,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 19:08:11,233 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:08:11,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:08:11,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1374491824, now seen corresponding path program 1 times [2020-10-27 19:08:11,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:08:11,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863345245] [2020-10-27 19:08:11,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:08:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:11,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:11,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:13,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:16,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:16,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:16,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-10-27 19:08:16,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:08:16,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5110 [2020-10-27 19:08:16,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:16,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:08:16,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-10-27 19:08:16,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-27 19:08:16,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:16,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:08:16,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:16,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:16,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:16,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:08:16,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:16,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:08:16,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:16,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:08:16,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:08:16,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:08:16,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:16,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:08:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:16,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:16,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:16,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 19:08:16,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:16,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 19:08:16,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:16,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:08:16,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:08:16,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:08:16,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:16,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 19:08:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:16,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:16,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:16,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 19:08:16,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:16,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 19:08:16,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:16,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:08:16,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:08:16,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 19:08:16,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:16,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-27 19:08:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:16,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:16,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:16,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 19:08:16,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:16,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-27 19:08:16,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:16,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:08:16,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:08:16,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-27 19:08:16,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 258 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-27 19:08:17,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863345245] [2020-10-27 19:08:17,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:08:17,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:08:17,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471966483] [2020-10-27 19:08:17,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:08:17,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:08:17,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:08:17,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:08:17,311 INFO L87 Difference]: Start difference. First operand 35402 states and 39201 transitions. Second operand 7 states. [2020-10-27 19:08:28,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:08:28,105 INFO L93 Difference]: Finished difference Result 87142 states and 96904 transitions. [2020-10-27 19:08:28,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 19:08:28,106 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 388 [2020-10-27 19:08:28,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:08:28,214 INFO L225 Difference]: With dead ends: 87142 [2020-10-27 19:08:28,215 INFO L226 Difference]: Without dead ends: 51746 [2020-10-27 19:08:28,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:08:28,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51746 states. [2020-10-27 19:08:29,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51746 to 48199. [2020-10-27 19:08:29,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48199 states. [2020-10-27 19:08:29,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48199 states to 48199 states and 53074 transitions. [2020-10-27 19:08:29,080 INFO L78 Accepts]: Start accepts. Automaton has 48199 states and 53074 transitions. Word has length 388 [2020-10-27 19:08:29,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:08:29,081 INFO L481 AbstractCegarLoop]: Abstraction has 48199 states and 53074 transitions. [2020-10-27 19:08:29,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:08:29,081 INFO L276 IsEmpty]: Start isEmpty. Operand 48199 states and 53074 transitions. [2020-10-27 19:08:29,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2020-10-27 19:08:29,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:08:29,141 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:08:29,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 19:08:29,142 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:08:29,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:08:29,143 INFO L82 PathProgramCache]: Analyzing trace with hash -570255638, now seen corresponding path program 1 times [2020-10-27 19:08:29,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:08:29,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360370428] [2020-10-27 19:08:29,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:08:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:29,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:29,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:29,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:34,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:34,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 702 [2020-10-27 19:08:34,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:08:34,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 19:08:34,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:34,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:08:34,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-27 19:08:34,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 425 [2020-10-27 19:08:34,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:34,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:08:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:34,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:34,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:34,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:08:34,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:34,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:08:34,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:34,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:08:34,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:08:34,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:08:34,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:34,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:08:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:34,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:34,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:34,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 19:08:34,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:34,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 19:08:34,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:08:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:08:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 19:08:34,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:34,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 19:08:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:34,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:34,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:36,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:36,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-10-27 19:08:36,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:08:36,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1755 [2020-10-27 19:08:36,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:36,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:08:36,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:08:36,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 426 [2020-10-27 19:08:36,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:36,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:08:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:36,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:36,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:36,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 19:08:36,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:36,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-27 19:08:36,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:36,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:08:36,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:08:36,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 19:08:36,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:36,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-27 19:08:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:36,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:36,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:08:36,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 19:08:36,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:08:36,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 19:08:36,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:08:36,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:08:36,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-27 19:08:36,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:08:36,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:08:37,610 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 133 proven. 160 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-27 19:08:37,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360370428] [2020-10-27 19:08:37,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:08:37,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:08:37,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892142878] [2020-10-27 19:08:37,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:08:37,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:08:37,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:08:37,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:08:37,613 INFO L87 Difference]: Start difference. First operand 48199 states and 53074 transitions. Second operand 7 states. [2020-10-27 19:08:52,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:08:52,782 INFO L93 Difference]: Finished difference Result 97486 states and 109445 transitions. [2020-10-27 19:08:52,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 19:08:52,784 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 684 [2020-10-27 19:08:52,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:08:52,951 INFO L225 Difference]: With dead ends: 97486 [2020-10-27 19:08:52,952 INFO L226 Difference]: Without dead ends: 49293 [2020-10-27 19:08:53,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 19:08:53,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49293 states. [2020-10-27 19:08:53,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49293 to 49001. [2020-10-27 19:08:53,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49001 states. [2020-10-27 19:08:53,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49001 states to 49001 states and 54019 transitions. [2020-10-27 19:08:53,967 INFO L78 Accepts]: Start accepts. Automaton has 49001 states and 54019 transitions. Word has length 684 [2020-10-27 19:08:53,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:08:53,967 INFO L481 AbstractCegarLoop]: Abstraction has 49001 states and 54019 transitions. [2020-10-27 19:08:53,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:08:53,968 INFO L276 IsEmpty]: Start isEmpty. Operand 49001 states and 54019 transitions. [2020-10-27 19:08:54,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2020-10-27 19:08:54,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:08:54,014 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:08:54,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 19:08:54,014 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:08:54,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:08:54,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1846458948, now seen corresponding path program 1 times [2020-10-27 19:08:54,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:08:54,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224372802] [2020-10-27 19:08:54,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:08:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:08:54,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:08:54,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking...