/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/array-examples/standard_copyInitSum2_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:22:29,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:22:29,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:22:29,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:22:29,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:22:29,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:22:29,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:22:29,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:22:29,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:22:29,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:22:29,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:22:29,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:22:29,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:22:29,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:22:29,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:22:29,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:22:29,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:22:29,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:22:29,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:22:29,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:22:29,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:22:29,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:22:29,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:22:29,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:22:29,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:22:29,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:22:29,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:22:29,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:22:29,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:22:29,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:22:29,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:22:29,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:22:29,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:22:29,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:22:29,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:22:29,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:22:29,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:22:29,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:22:29,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:22:29,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:22:29,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:22:29,743 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 14:22:29,798 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:22:29,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:22:29,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:22:29,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:22:29,803 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:22:29,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:22:29,804 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:22:29,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:22:29,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:22:29,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:22:29,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:22:29,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:22:29,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:22:29,806 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:22:29,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:22:29,807 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:22:29,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:22:29,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:22:29,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:22:29,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:22:29,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:22:29,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:22:29,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:22:29,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:22:29,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:22:29,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:22:29,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:22:29,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:22:29,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:22:29,809 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:22:30,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:22:30,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:22:30,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:22:30,263 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:22:30,264 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:22:30,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copyInitSum2_ground-1.i [2020-10-27 14:22:30,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7bebd9bb9/9ef8e16d8f0c41efb5e158755f78d6ce/FLAG1b631bfc0 [2020-10-27 14:22:31,002 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:22:31,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_copyInitSum2_ground-1.i [2020-10-27 14:22:31,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7bebd9bb9/9ef8e16d8f0c41efb5e158755f78d6ce/FLAG1b631bfc0 [2020-10-27 14:22:31,359 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7bebd9bb9/9ef8e16d8f0c41efb5e158755f78d6ce [2020-10-27 14:22:31,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:22:31,370 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:22:31,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:22:31,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:22:31,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:22:31,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:22:31" (1/1) ... [2020-10-27 14:22:31,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@785f92ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:31, skipping insertion in model container [2020-10-27 14:22:31,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:22:31" (1/1) ... [2020-10-27 14:22:31,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:22:31,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:22:31,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:22:31,595 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:22:31,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:22:31,638 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:22:31,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:31 WrapperNode [2020-10-27 14:22:31,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:22:31,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:22:31,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:22:31,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:22:31,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:31" (1/1) ... [2020-10-27 14:22:31,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:31" (1/1) ... [2020-10-27 14:22:31,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:31" (1/1) ... [2020-10-27 14:22:31,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:31" (1/1) ... [2020-10-27 14:22:31,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:31" (1/1) ... [2020-10-27 14:22:31,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:31" (1/1) ... [2020-10-27 14:22:31,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:31" (1/1) ... [2020-10-27 14:22:31,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:22:31,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:22:31,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:22:31,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:22:31,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:31" (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 14:22:31,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:22:31,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:22:31,783 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:22:31,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:22:31,784 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:22:31,784 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:22:31,784 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:22:31,785 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:22:31,785 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:22:31,785 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:22:31,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:22:31,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:22:31,787 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:22:31,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:22:31,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:22:31,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:22:31,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:22:31,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:22:31,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:22:32,207 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:22:32,207 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-27 14:22:32,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:22:32 BoogieIcfgContainer [2020-10-27 14:22:32,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:22:32,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:22:32,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:22:32,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:22:32,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:22:31" (1/3) ... [2020-10-27 14:22:32,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539b9b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:22:32, skipping insertion in model container [2020-10-27 14:22:32,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:22:31" (2/3) ... [2020-10-27 14:22:32,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539b9b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:22:32, skipping insertion in model container [2020-10-27 14:22:32,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:22:32" (3/3) ... [2020-10-27 14:22:32,220 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_copyInitSum2_ground-1.i [2020-10-27 14:22:32,233 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:22:32,238 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:22:32,283 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:22:32,332 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:22:32,332 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:22:32,332 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:22:32,332 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:22:32,333 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:22:32,333 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:22:32,333 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:22:32,333 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:22:32,357 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-27 14:22:32,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 14:22:32,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:32,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:32,370 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:32,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:32,381 INFO L82 PathProgramCache]: Analyzing trace with hash -925662558, now seen corresponding path program 1 times [2020-10-27 14:22:32,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:32,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047477286] [2020-10-27 14:22:32,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:32,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:32,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:32,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:33,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:33,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 14:22:33,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:22:33,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-27 14:22:33,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:33,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:33,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:22:33,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:33,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:22:33,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:33,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:33,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:33,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:33,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:33,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:22:33,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:33,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:33,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:33,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:33,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:33,171 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 14:22:33,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047477286] [2020-10-27 14:22:33,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:22:33,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:22:33,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766648837] [2020-10-27 14:22:33,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:22:33,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:33,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:22:33,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:22:33,200 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-10-27 14:22:33,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:33,334 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2020-10-27 14:22:33,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:22:33,337 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-27 14:22:33,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:33,346 INFO L225 Difference]: With dead ends: 58 [2020-10-27 14:22:33,346 INFO L226 Difference]: Without dead ends: 26 [2020-10-27 14:22:33,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:22:33,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-27 14:22:33,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-27 14:22:33,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-27 14:22:33,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-10-27 14:22:33,397 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 19 [2020-10-27 14:22:33,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:33,398 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-10-27 14:22:33,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:22:33,398 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-10-27 14:22:33,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 14:22:33,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:33,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:33,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:22:33,400 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:33,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:33,401 INFO L82 PathProgramCache]: Analyzing trace with hash -774064106, now seen corresponding path program 1 times [2020-10-27 14:22:33,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:33,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702798382] [2020-10-27 14:22:33,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:33,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:33,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:33,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:33,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:33,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 14:22:33,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:22:33,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-27 14:22:33,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:33,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:22:33,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:22:33,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:22:33,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:33,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:33,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:33,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:33,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:33,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:33,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:22:33,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:33,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:33,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:33,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:33,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:22:33,891 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 14:22:33,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702798382] [2020-10-27 14:22:33,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:22:33,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:22:33,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544242068] [2020-10-27 14:22:33,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:22:33,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:33,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:22:33,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:22:33,896 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 4 states. [2020-10-27 14:22:34,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:34,113 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-27 14:22:34,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:22:34,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-27 14:22:34,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:34,116 INFO L225 Difference]: With dead ends: 50 [2020-10-27 14:22:34,116 INFO L226 Difference]: Without dead ends: 31 [2020-10-27 14:22:34,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:22:34,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-27 14:22:34,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-10-27 14:22:34,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 14:22:34,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-27 14:22:34,127 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 19 [2020-10-27 14:22:34,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:34,128 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-27 14:22:34,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:22:34,128 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-27 14:22:34,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 14:22:34,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:34,129 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] [2020-10-27 14:22:34,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:22:34,130 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:34,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:34,131 INFO L82 PathProgramCache]: Analyzing trace with hash 504393060, now seen corresponding path program 1 times [2020-10-27 14:22:34,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:34,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509142215] [2020-10-27 14:22:34,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:34,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:34,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:34,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:34,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:35,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:35,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:22:35,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:22:35,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1651 [2020-10-27 14:22:35,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:35,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:22:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 14:22:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:22:35,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:35,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:35,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:35,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:35,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:35,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:35,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:22:35,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:35,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:35,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:35,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:35,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:35,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 14:22:35,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509142215] [2020-10-27 14:22:35,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:22:35,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 14:22:35,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78360953] [2020-10-27 14:22:35,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:22:35,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:35,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:22:35,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:22:35,885 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 5 states. [2020-10-27 14:22:36,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:36,042 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2020-10-27 14:22:36,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:22:36,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-27 14:22:36,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:36,044 INFO L225 Difference]: With dead ends: 57 [2020-10-27 14:22:36,044 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 14:22:36,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:22:36,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 14:22:36,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-27 14:22:36,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 14:22:36,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-10-27 14:22:36,053 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 24 [2020-10-27 14:22:36,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:36,054 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-10-27 14:22:36,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:22:36,054 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-10-27 14:22:36,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 14:22:36,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:36,056 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:36,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:22:36,056 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:36,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:36,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1961250610, now seen corresponding path program 2 times [2020-10-27 14:22:36,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:36,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38947344] [2020-10-27 14:22:36,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:36,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:36,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:36,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:36,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:39,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:39,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 14:22:39,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:22:39,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3920 [2020-10-27 14:22:39,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:22:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:22:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:22:39,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:40,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:40,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:40,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:40,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:40,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:40,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:22:40,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:40,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:40,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:40,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:40,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:40,124 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 14:22:40,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38947344] [2020-10-27 14:22:40,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:22:40,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:22:40,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403369609] [2020-10-27 14:22:40,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:22:40,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:40,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:22:40,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:22:40,131 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 6 states. [2020-10-27 14:22:40,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:40,318 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2020-10-27 14:22:40,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:22:40,319 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-27 14:22:40,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:40,320 INFO L225 Difference]: With dead ends: 66 [2020-10-27 14:22:40,320 INFO L226 Difference]: Without dead ends: 41 [2020-10-27 14:22:40,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:22:40,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-27 14:22:40,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-10-27 14:22:40,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 14:22:40,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-27 14:22:40,330 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 29 [2020-10-27 14:22:40,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:40,330 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-27 14:22:40,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:22:40,331 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-27 14:22:40,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 14:22:40,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:40,332 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:40,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:22:40,333 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:40,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:40,333 INFO L82 PathProgramCache]: Analyzing trace with hash 407436188, now seen corresponding path program 3 times [2020-10-27 14:22:40,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:40,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2147476080] [2020-10-27 14:22:40,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:40,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:40,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:40,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:41,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:45,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:45,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:22:45,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:22:45,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:22:45,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:45,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:22:45,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 14:22:45,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:22:45,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:45,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:45,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:45,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:45,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:45,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:45,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:22:45,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:45,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:45,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:45,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:45,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:45,513 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:22:45,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2147476080] [2020-10-27 14:22:45,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:22:45,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:22:45,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399517684] [2020-10-27 14:22:45,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:22:45,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:45,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:22:45,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:22:45,519 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 7 states. [2020-10-27 14:22:45,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:45,761 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2020-10-27 14:22:45,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:22:45,762 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-10-27 14:22:45,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:45,763 INFO L225 Difference]: With dead ends: 75 [2020-10-27 14:22:45,763 INFO L226 Difference]: Without dead ends: 46 [2020-10-27 14:22:45,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:22:45,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-27 14:22:45,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-10-27 14:22:45,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-27 14:22:45,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-10-27 14:22:45,772 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 34 [2020-10-27 14:22:45,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:45,773 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-10-27 14:22:45,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:22:45,773 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-10-27 14:22:45,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 14:22:45,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:45,774 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:45,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:22:45,775 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:45,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:45,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1192992378, now seen corresponding path program 4 times [2020-10-27 14:22:45,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:45,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850916889] [2020-10-27 14:22:45,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:45,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:45,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:45,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:46,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:50,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:50,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 14:22:50,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:22:50,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:22:50,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:50,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:22:50,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 14:22:50,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:22:50,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:50,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:50,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:50,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:50,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:50,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:50,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:22:50,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:50,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:50,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:50,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:50,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:50,943 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-27 14:22:50,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850916889] [2020-10-27 14:22:50,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:22:50,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:22:50,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921624845] [2020-10-27 14:22:50,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:22:50,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:50,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:22:50,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:22:50,951 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 8 states. [2020-10-27 14:22:51,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:51,223 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2020-10-27 14:22:51,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:22:51,225 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-10-27 14:22:51,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:51,226 INFO L225 Difference]: With dead ends: 84 [2020-10-27 14:22:51,227 INFO L226 Difference]: Without dead ends: 51 [2020-10-27 14:22:51,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:22:51,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-27 14:22:51,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-10-27 14:22:51,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 14:22:51,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-10-27 14:22:51,242 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 39 [2020-10-27 14:22:51,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:51,244 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-10-27 14:22:51,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:22:51,244 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-10-27 14:22:51,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 14:22:51,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:51,246 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:51,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:22:51,246 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:51,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:51,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1238065620, now seen corresponding path program 5 times [2020-10-27 14:22:51,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:51,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813975661] [2020-10-27 14:22:51,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:51,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:51,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:51,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:53,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:56,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:56,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:22:56,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:22:56,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 14:22:56,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:22:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-27 14:22:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:22:56,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:56,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:22:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:56,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:56,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:22:56,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:22:56,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:22:56,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:22:56,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:22:56,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:22:56,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:22:56,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:22:56,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:22:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-27 14:22:56,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813975661] [2020-10-27 14:22:56,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:22:56,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:22:56,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538279956] [2020-10-27 14:22:56,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:22:56,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:22:56,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:22:56,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:22:56,460 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 9 states. [2020-10-27 14:22:56,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:22:56,720 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2020-10-27 14:22:56,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:22:56,721 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-10-27 14:22:56,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:22:56,722 INFO L225 Difference]: With dead ends: 93 [2020-10-27 14:22:56,722 INFO L226 Difference]: Without dead ends: 56 [2020-10-27 14:22:56,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:22:56,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-27 14:22:56,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-10-27 14:22:56,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 14:22:56,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-10-27 14:22:56,731 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 44 [2020-10-27 14:22:56,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:22:56,732 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-10-27 14:22:56,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:22:56,732 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-10-27 14:22:56,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 14:22:56,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:22:56,733 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:22:56,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:22:56,733 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:22:56,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:22:56,734 INFO L82 PathProgramCache]: Analyzing trace with hash -2060924354, now seen corresponding path program 6 times [2020-10-27 14:22:56,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:22:56,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617970795] [2020-10-27 14:22:56,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:22:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:22:56,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:56,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:56,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:22:58,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:01,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:01,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 14:23:01,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:23:01,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:23:01,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:01,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:23:01,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 14:23:01,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:23:01,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:01,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:01,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:01,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:01,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:01,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:01,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:23:01,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:01,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:01,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:01,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:01,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:01,944 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-27 14:23:01,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617970795] [2020-10-27 14:23:01,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:01,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:23:01,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215250371] [2020-10-27 14:23:01,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:23:01,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:01,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:23:01,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:23:01,951 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 10 states. [2020-10-27 14:23:02,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:02,398 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2020-10-27 14:23:02,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:23:02,398 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-10-27 14:23:02,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:02,399 INFO L225 Difference]: With dead ends: 102 [2020-10-27 14:23:02,399 INFO L226 Difference]: Without dead ends: 61 [2020-10-27 14:23:02,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:23:02,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-27 14:23:02,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-10-27 14:23:02,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-27 14:23:02,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-10-27 14:23:02,408 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 49 [2020-10-27 14:23:02,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:02,408 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-10-27 14:23:02,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:23:02,409 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-10-27 14:23:02,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 14:23:02,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:02,410 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:02,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:23:02,410 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:02,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:02,411 INFO L82 PathProgramCache]: Analyzing trace with hash -623140852, now seen corresponding path program 7 times [2020-10-27 14:23:02,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:02,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119189467] [2020-10-27 14:23:02,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:02,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:02,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:02,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:07,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:07,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:23:07,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:07,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:23:07,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:07,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:23:07,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 14:23:07,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:23:07,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:07,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:07,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:07,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:07,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:07,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:07,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:23:07,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:07,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:07,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:07,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:07,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:07,600 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-27 14:23:07,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119189467] [2020-10-27 14:23:07,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:07,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:23:07,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195494385] [2020-10-27 14:23:07,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:23:07,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:07,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:23:07,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:23:07,604 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 11 states. [2020-10-27 14:23:07,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:07,807 INFO L93 Difference]: Finished difference Result 111 states and 119 transitions. [2020-10-27 14:23:07,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:23:07,808 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2020-10-27 14:23:07,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:07,809 INFO L225 Difference]: With dead ends: 111 [2020-10-27 14:23:07,809 INFO L226 Difference]: Without dead ends: 66 [2020-10-27 14:23:07,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:23:07,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-27 14:23:07,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-27 14:23:07,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-27 14:23:07,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2020-10-27 14:23:07,818 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 54 [2020-10-27 14:23:07,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:07,818 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2020-10-27 14:23:07,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:23:07,819 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2020-10-27 14:23:07,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 14:23:07,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:07,820 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:07,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:23:07,820 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:07,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:07,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1758653174, now seen corresponding path program 8 times [2020-10-27 14:23:07,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:07,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018570311] [2020-10-27 14:23:07,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:07,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:07,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:07,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:12,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:12,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 14:23:12,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:12,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 14:23:12,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:12,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:23:12,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 14:23:12,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:23:12,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:13,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:13,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:13,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:13,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:13,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:13,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:23:13,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:13,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:13,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:13,032 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-27 14:23:13,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018570311] [2020-10-27 14:23:13,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:13,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:23:13,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262396000] [2020-10-27 14:23:13,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:23:13,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:13,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:23:13,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:23:13,035 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 12 states. [2020-10-27 14:23:13,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:13,259 INFO L93 Difference]: Finished difference Result 120 states and 128 transitions. [2020-10-27 14:23:13,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:23:13,259 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 59 [2020-10-27 14:23:13,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:13,260 INFO L225 Difference]: With dead ends: 120 [2020-10-27 14:23:13,260 INFO L226 Difference]: Without dead ends: 71 [2020-10-27 14:23:13,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:23:13,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-27 14:23:13,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2020-10-27 14:23:13,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-27 14:23:13,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2020-10-27 14:23:13,269 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 59 [2020-10-27 14:23:13,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:13,270 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2020-10-27 14:23:13,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:23:13,270 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2020-10-27 14:23:13,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 14:23:13,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:13,271 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:13,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:23:13,272 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:13,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:13,272 INFO L82 PathProgramCache]: Analyzing trace with hash 884848196, now seen corresponding path program 9 times [2020-10-27 14:23:13,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:13,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732268524] [2020-10-27 14:23:13,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:13,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:13,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:13,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:18,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:18,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 14:23:18,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:18,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 14:23:18,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:18,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:23:18,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 14:23:18,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:23:18,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:18,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:18,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:18,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:18,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:18,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:18,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:23:18,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:18,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:18,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:18,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:18,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:18,502 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-27 14:23:18,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732268524] [2020-10-27 14:23:18,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:18,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:23:18,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53585403] [2020-10-27 14:23:18,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:23:18,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:18,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:23:18,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:23:18,505 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 13 states. [2020-10-27 14:23:18,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:18,725 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2020-10-27 14:23:18,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:23:18,725 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 64 [2020-10-27 14:23:18,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:18,727 INFO L225 Difference]: With dead ends: 129 [2020-10-27 14:23:18,727 INFO L226 Difference]: Without dead ends: 76 [2020-10-27 14:23:18,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:23:18,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-27 14:23:18,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-10-27 14:23:18,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-27 14:23:18,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2020-10-27 14:23:18,740 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 64 [2020-10-27 14:23:18,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:18,741 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2020-10-27 14:23:18,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:23:18,741 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-10-27 14:23:18,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 14:23:18,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:18,742 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:18,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:23:18,742 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:18,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:18,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1808712622, now seen corresponding path program 10 times [2020-10-27 14:23:18,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:18,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141024085] [2020-10-27 14:23:18,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:18,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:18,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:18,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:23,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:23,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 14:23:23,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:23,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:23:23,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:23,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:23:23,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 14:23:23,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:23:23,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:23,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:23,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:23,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:23,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:23,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:23,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:23:23,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:23,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:23,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:23,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:23,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:23,950 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-10-27 14:23:23,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141024085] [2020-10-27 14:23:23,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:23,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:23:23,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544240861] [2020-10-27 14:23:23,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:23:23,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:23,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:23:23,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:23:23,953 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 14 states. [2020-10-27 14:23:24,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:24,147 INFO L93 Difference]: Finished difference Result 138 states and 146 transitions. [2020-10-27 14:23:24,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:23:24,148 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 69 [2020-10-27 14:23:24,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:24,149 INFO L225 Difference]: With dead ends: 138 [2020-10-27 14:23:24,149 INFO L226 Difference]: Without dead ends: 81 [2020-10-27 14:23:24,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:23:24,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-27 14:23:24,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2020-10-27 14:23:24,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-27 14:23:24,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2020-10-27 14:23:24,164 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 69 [2020-10-27 14:23:24,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:24,167 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2020-10-27 14:23:24,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:23:24,167 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2020-10-27 14:23:24,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 14:23:24,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:24,172 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:24,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:23:24,172 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:24,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:24,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1045060484, now seen corresponding path program 11 times [2020-10-27 14:23:24,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:24,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910965638] [2020-10-27 14:23:24,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:24,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:24,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:24,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:29,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:29,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 14:23:29,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:29,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 14:23:29,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:29,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:23:29,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 14:23:29,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:23:29,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:29,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:29,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:29,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:29,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:29,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:29,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:23:29,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:29,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:29,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:29,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:29,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-27 14:23:29,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910965638] [2020-10-27 14:23:29,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:29,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:23:29,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660028646] [2020-10-27 14:23:29,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:23:29,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:29,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:23:29,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:23:29,448 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand 15 states. [2020-10-27 14:23:29,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:29,790 INFO L93 Difference]: Finished difference Result 147 states and 155 transitions. [2020-10-27 14:23:29,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:23:29,790 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 74 [2020-10-27 14:23:29,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:29,792 INFO L225 Difference]: With dead ends: 147 [2020-10-27 14:23:29,792 INFO L226 Difference]: Without dead ends: 86 [2020-10-27 14:23:29,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:23:29,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-27 14:23:29,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2020-10-27 14:23:29,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 14:23:29,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 87 transitions. [2020-10-27 14:23:29,817 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 87 transitions. Word has length 74 [2020-10-27 14:23:29,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:29,817 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 87 transitions. [2020-10-27 14:23:29,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:23:29,818 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 87 transitions. [2020-10-27 14:23:29,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 14:23:29,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:29,820 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:29,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:23:29,823 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:29,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:29,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1695044710, now seen corresponding path program 12 times [2020-10-27 14:23:29,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:29,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989715057] [2020-10-27 14:23:29,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:29,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:29,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:30,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:34,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:34,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 14:23:34,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:34,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 14:23:34,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:34,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:23:34,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 14:23:34,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:23:34,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:35,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:35,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:35,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:35,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:35,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:35,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:23:35,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:35,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:35,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:35,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:35,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:35,121 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-27 14:23:35,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989715057] [2020-10-27 14:23:35,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:35,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:23:35,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801658868] [2020-10-27 14:23:35,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:23:35,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:35,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:23:35,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:23:35,124 INFO L87 Difference]: Start difference. First operand 84 states and 87 transitions. Second operand 16 states. [2020-10-27 14:23:35,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:35,420 INFO L93 Difference]: Finished difference Result 156 states and 164 transitions. [2020-10-27 14:23:35,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:23:35,421 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-10-27 14:23:35,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:35,422 INFO L225 Difference]: With dead ends: 156 [2020-10-27 14:23:35,422 INFO L226 Difference]: Without dead ends: 91 [2020-10-27 14:23:35,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:23:35,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-27 14:23:35,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2020-10-27 14:23:35,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-27 14:23:35,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2020-10-27 14:23:35,436 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 79 [2020-10-27 14:23:35,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:35,436 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2020-10-27 14:23:35,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:23:35,437 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2020-10-27 14:23:35,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 14:23:35,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:35,439 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:35,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:23:35,439 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:35,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:35,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1392022860, now seen corresponding path program 13 times [2020-10-27 14:23:35,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:35,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16727147] [2020-10-27 14:23:35,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:35,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:35,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:35,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:40,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:40,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 14:23:40,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:40,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-27 14:23:40,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:40,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:23:40,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 14:23:40,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:23:40,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:40,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:40,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:40,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:40,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:40,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:40,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:23:40,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:40,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:40,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:40,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:40,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:40,752 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-10-27 14:23:40,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16727147] [2020-10-27 14:23:40,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:40,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:23:40,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111069217] [2020-10-27 14:23:40,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:23:40,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:40,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:23:40,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:23:40,755 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand 17 states. [2020-10-27 14:23:41,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:41,056 INFO L93 Difference]: Finished difference Result 165 states and 173 transitions. [2020-10-27 14:23:41,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:23:41,057 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 84 [2020-10-27 14:23:41,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:41,058 INFO L225 Difference]: With dead ends: 165 [2020-10-27 14:23:41,058 INFO L226 Difference]: Without dead ends: 96 [2020-10-27 14:23:41,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:23:41,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-27 14:23:41,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-10-27 14:23:41,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-27 14:23:41,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 97 transitions. [2020-10-27 14:23:41,088 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 97 transitions. Word has length 84 [2020-10-27 14:23:41,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:41,088 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 97 transitions. [2020-10-27 14:23:41,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:23:41,088 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 97 transitions. [2020-10-27 14:23:41,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 14:23:41,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:41,089 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:41,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:23:41,090 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:41,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:41,090 INFO L82 PathProgramCache]: Analyzing trace with hash 980131102, now seen corresponding path program 14 times [2020-10-27 14:23:41,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:41,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610752501] [2020-10-27 14:23:41,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:41,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:41,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:41,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:46,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:46,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 14:23:46,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:46,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:23:46,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:46,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:23:46,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 14:23:46,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:23:46,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:46,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:46,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:46,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:46,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:46,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:46,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:23:46,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:46,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:46,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:46,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:46,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:46,404 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-10-27 14:23:46,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610752501] [2020-10-27 14:23:46,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:46,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:23:46,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985830145] [2020-10-27 14:23:46,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:23:46,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:46,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:23:46,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:23:46,406 INFO L87 Difference]: Start difference. First operand 94 states and 97 transitions. Second operand 18 states. [2020-10-27 14:23:46,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:46,704 INFO L93 Difference]: Finished difference Result 174 states and 182 transitions. [2020-10-27 14:23:46,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:23:46,705 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 89 [2020-10-27 14:23:46,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:46,706 INFO L225 Difference]: With dead ends: 174 [2020-10-27 14:23:46,706 INFO L226 Difference]: Without dead ends: 101 [2020-10-27 14:23:46,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:23:46,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-27 14:23:46,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2020-10-27 14:23:46,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-27 14:23:46,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 102 transitions. [2020-10-27 14:23:46,713 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 102 transitions. Word has length 89 [2020-10-27 14:23:46,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:46,714 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 102 transitions. [2020-10-27 14:23:46,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:23:46,714 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 102 transitions. [2020-10-27 14:23:46,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 14:23:46,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:46,715 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:46,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:23:46,715 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:46,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:46,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1560868628, now seen corresponding path program 15 times [2020-10-27 14:23:46,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:46,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547587057] [2020-10-27 14:23:46,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:46,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:46,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:47,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:51,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:51,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 14:23:51,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:51,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 14:23:51,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:51,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:23:51,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 14:23:51,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:23:51,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:52,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:52,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:52,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:52,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:52,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:52,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:23:52,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:52,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:52,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:52,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:52,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:52,061 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-10-27 14:23:52,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547587057] [2020-10-27 14:23:52,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:52,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:23:52,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578598031] [2020-10-27 14:23:52,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:23:52,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:52,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:23:52,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:23:52,073 INFO L87 Difference]: Start difference. First operand 99 states and 102 transitions. Second operand 19 states. [2020-10-27 14:23:52,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:52,391 INFO L93 Difference]: Finished difference Result 183 states and 191 transitions. [2020-10-27 14:23:52,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:23:52,391 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 94 [2020-10-27 14:23:52,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:52,392 INFO L225 Difference]: With dead ends: 183 [2020-10-27 14:23:52,392 INFO L226 Difference]: Without dead ends: 106 [2020-10-27 14:23:52,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:23:52,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-27 14:23:52,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-10-27 14:23:52,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-27 14:23:52,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 107 transitions. [2020-10-27 14:23:52,399 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 107 transitions. Word has length 94 [2020-10-27 14:23:52,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:52,400 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 107 transitions. [2020-10-27 14:23:52,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:23:52,400 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 107 transitions. [2020-10-27 14:23:52,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 14:23:52,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:52,401 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:52,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:23:52,401 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:52,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:52,402 INFO L82 PathProgramCache]: Analyzing trace with hash 551853526, now seen corresponding path program 16 times [2020-10-27 14:23:52,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:52,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675181245] [2020-10-27 14:23:52,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:52,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:52,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:54,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:57,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:57,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 14:23:57,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:23:57,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 14:23:57,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:57,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:23:57,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-27 14:23:57,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:23:57,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:57,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:23:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:57,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:57,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:23:57,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:23:57,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:23:57,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:23:57,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:23:57,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:23:57,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:23:57,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:23:57,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:23:57,812 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-10-27 14:23:57,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675181245] [2020-10-27 14:23:57,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:23:57,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:23:57,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129477342] [2020-10-27 14:23:57,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:23:57,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:23:57,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:23:57,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:23:57,815 INFO L87 Difference]: Start difference. First operand 104 states and 107 transitions. Second operand 20 states. [2020-10-27 14:23:58,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:23:58,149 INFO L93 Difference]: Finished difference Result 192 states and 200 transitions. [2020-10-27 14:23:58,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:23:58,150 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 99 [2020-10-27 14:23:58,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:23:58,151 INFO L225 Difference]: With dead ends: 192 [2020-10-27 14:23:58,151 INFO L226 Difference]: Without dead ends: 111 [2020-10-27 14:23:58,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:23:58,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-27 14:23:58,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2020-10-27 14:23:58,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-27 14:23:58,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 112 transitions. [2020-10-27 14:23:58,160 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 112 transitions. Word has length 99 [2020-10-27 14:23:58,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:23:58,160 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 112 transitions. [2020-10-27 14:23:58,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:23:58,160 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 112 transitions. [2020-10-27 14:23:58,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 14:23:58,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:23:58,162 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:23:58,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:23:58,162 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:23:58,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:23:58,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1865908444, now seen corresponding path program 17 times [2020-10-27 14:23:58,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:23:58,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439244941] [2020-10-27 14:23:58,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:23:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:23:58,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:58,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:23:59,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:03,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:03,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 14:24:03,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:03,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5354 [2020-10-27 14:24:03,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:03,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:24:03,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-27 14:24:03,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:24:03,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:03,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:03,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:03,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:03,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:03,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:03,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:03,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:03,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:03,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:03,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:03,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:03,899 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-10-27 14:24:03,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439244941] [2020-10-27 14:24:03,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:03,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:24:03,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896553887] [2020-10-27 14:24:03,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:24:03,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:03,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:24:03,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:24:03,901 INFO L87 Difference]: Start difference. First operand 109 states and 112 transitions. Second operand 21 states. [2020-10-27 14:24:04,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:04,288 INFO L93 Difference]: Finished difference Result 201 states and 209 transitions. [2020-10-27 14:24:04,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:24:04,289 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 104 [2020-10-27 14:24:04,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:04,290 INFO L225 Difference]: With dead ends: 201 [2020-10-27 14:24:04,290 INFO L226 Difference]: Without dead ends: 116 [2020-10-27 14:24:04,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:24:04,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-27 14:24:04,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2020-10-27 14:24:04,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-27 14:24:04,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 117 transitions. [2020-10-27 14:24:04,304 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 117 transitions. Word has length 104 [2020-10-27 14:24:04,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:04,304 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 117 transitions. [2020-10-27 14:24:04,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:24:04,304 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 117 transitions. [2020-10-27 14:24:04,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 14:24:04,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:04,306 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:04,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:24:04,306 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:04,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:04,307 INFO L82 PathProgramCache]: Analyzing trace with hash -597731698, now seen corresponding path program 18 times [2020-10-27 14:24:04,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:04,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065070669] [2020-10-27 14:24:04,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:04,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:04,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:05,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:09,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:09,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 14:24:09,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:09,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-27 14:24:09,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:09,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:24:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 14:24:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:24:09,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:09,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:09,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:09,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:09,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:09,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:09,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:24:09,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:09,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:09,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:09,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:09,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:09,815 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-10-27 14:24:09,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065070669] [2020-10-27 14:24:09,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:09,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:24:09,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746626999] [2020-10-27 14:24:09,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:24:09,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:09,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:24:09,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:24:09,818 INFO L87 Difference]: Start difference. First operand 114 states and 117 transitions. Second operand 22 states. [2020-10-27 14:24:10,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:10,181 INFO L93 Difference]: Finished difference Result 210 states and 218 transitions. [2020-10-27 14:24:10,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:24:10,181 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 109 [2020-10-27 14:24:10,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:10,182 INFO L225 Difference]: With dead ends: 210 [2020-10-27 14:24:10,182 INFO L226 Difference]: Without dead ends: 121 [2020-10-27 14:24:10,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:24:10,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-27 14:24:10,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2020-10-27 14:24:10,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-27 14:24:10,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 122 transitions. [2020-10-27 14:24:10,189 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 122 transitions. Word has length 109 [2020-10-27 14:24:10,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:10,190 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 122 transitions. [2020-10-27 14:24:10,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:24:10,190 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 122 transitions. [2020-10-27 14:24:10,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 14:24:10,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:10,191 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:10,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:24:10,192 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:10,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:10,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1690291548, now seen corresponding path program 19 times [2020-10-27 14:24:10,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:10,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248342814] [2020-10-27 14:24:10,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:10,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:10,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:12,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:15,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:15,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 14:24:15,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:15,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5355 [2020-10-27 14:24:15,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:15,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:24:15,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 14:24:15,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:24:15,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:15,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:15,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:15,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:15,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:15,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:15,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:24:15,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:15,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:15,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:15,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:15,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:15,996 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-10-27 14:24:15,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248342814] [2020-10-27 14:24:15,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:15,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:24:15,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956186838] [2020-10-27 14:24:15,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:24:15,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:16,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:24:16,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:24:16,001 INFO L87 Difference]: Start difference. First operand 119 states and 122 transitions. Second operand 23 states. [2020-10-27 14:24:16,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:16,426 INFO L93 Difference]: Finished difference Result 219 states and 227 transitions. [2020-10-27 14:24:16,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:24:16,426 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 114 [2020-10-27 14:24:16,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:16,428 INFO L225 Difference]: With dead ends: 219 [2020-10-27 14:24:16,428 INFO L226 Difference]: Without dead ends: 126 [2020-10-27 14:24:16,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:24:16,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-27 14:24:16,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2020-10-27 14:24:16,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-27 14:24:16,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 127 transitions. [2020-10-27 14:24:16,437 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 127 transitions. Word has length 114 [2020-10-27 14:24:16,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:16,437 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 127 transitions. [2020-10-27 14:24:16,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:24:16,437 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 127 transitions. [2020-10-27 14:24:16,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 14:24:16,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:16,439 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:16,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:24:16,439 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:16,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:16,440 INFO L82 PathProgramCache]: Analyzing trace with hash -3684538, now seen corresponding path program 20 times [2020-10-27 14:24:16,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:16,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486350956] [2020-10-27 14:24:16,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:16,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:16,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:18,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:21,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:21,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 14:24:21,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:24:21,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-27 14:24:21,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:21,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:24:21,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-27 14:24:21,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:24:21,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:21,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:21,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:21,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:21,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:21,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:21,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:21,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:21,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:21,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:21,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:21,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:21,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-10-27 14:24:21,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486350956] [2020-10-27 14:24:21,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:21,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:24:21,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806683691] [2020-10-27 14:24:21,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:24:21,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:21,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:24:21,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:24:21,993 INFO L87 Difference]: Start difference. First operand 124 states and 127 transitions. Second operand 24 states. [2020-10-27 14:24:22,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:22,401 INFO L93 Difference]: Finished difference Result 228 states and 236 transitions. [2020-10-27 14:24:22,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:24:22,401 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 119 [2020-10-27 14:24:22,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:22,402 INFO L225 Difference]: With dead ends: 228 [2020-10-27 14:24:22,402 INFO L226 Difference]: Without dead ends: 131 [2020-10-27 14:24:22,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:24:22,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-27 14:24:22,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2020-10-27 14:24:22,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-27 14:24:22,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2020-10-27 14:24:22,411 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 119 [2020-10-27 14:24:22,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:22,411 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2020-10-27 14:24:22,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:24:22,412 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2020-10-27 14:24:22,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 14:24:22,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:22,413 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:22,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:24:22,413 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:22,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:22,414 INFO L82 PathProgramCache]: Analyzing trace with hash -836701292, now seen corresponding path program 21 times [2020-10-27 14:24:22,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:22,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075272658] [2020-10-27 14:24:22,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:22,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:22,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:27,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:27,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 14:24:27,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:24:27,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 14:24:27,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:27,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:24:27,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 14:24:27,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:24:27,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:27,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:27,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:27,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:27,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:27,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:27,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:27,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:27,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:27,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:27,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:27,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:27,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-10-27 14:24:27,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075272658] [2020-10-27 14:24:27,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:27,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 14:24:27,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975153233] [2020-10-27 14:24:27,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 14:24:27,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:27,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 14:24:27,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:24:27,928 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand 25 states. [2020-10-27 14:24:28,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:28,310 INFO L93 Difference]: Finished difference Result 237 states and 245 transitions. [2020-10-27 14:24:28,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 14:24:28,312 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 124 [2020-10-27 14:24:28,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:28,313 INFO L225 Difference]: With dead ends: 237 [2020-10-27 14:24:28,313 INFO L226 Difference]: Without dead ends: 136 [2020-10-27 14:24:28,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:24:28,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-27 14:24:28,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2020-10-27 14:24:28,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-27 14:24:28,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 137 transitions. [2020-10-27 14:24:28,322 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 137 transitions. Word has length 124 [2020-10-27 14:24:28,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:28,322 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 137 transitions. [2020-10-27 14:24:28,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 14:24:28,322 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 137 transitions. [2020-10-27 14:24:28,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 14:24:28,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:28,323 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:28,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:24:28,324 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:28,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:28,324 INFO L82 PathProgramCache]: Analyzing trace with hash 755625982, now seen corresponding path program 22 times [2020-10-27 14:24:28,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:28,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524125231] [2020-10-27 14:24:28,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:28,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:28,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:33,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:33,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 14:24:33,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:24:33,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5108 [2020-10-27 14:24:33,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:33,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:24:33,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 14:24:33,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 14:24:33,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:33,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:33,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:33,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:33,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:33,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:33,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:33,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:33,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:33,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:33,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:33,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:33,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-10-27 14:24:33,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524125231] [2020-10-27 14:24:33,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:33,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:24:33,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619311253] [2020-10-27 14:24:33,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:24:33,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:33,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:24:33,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:24:33,973 INFO L87 Difference]: Start difference. First operand 134 states and 137 transitions. Second operand 26 states. [2020-10-27 14:24:34,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:34,342 INFO L93 Difference]: Finished difference Result 246 states and 254 transitions. [2020-10-27 14:24:34,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:24:34,343 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 129 [2020-10-27 14:24:34,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:34,344 INFO L225 Difference]: With dead ends: 246 [2020-10-27 14:24:34,344 INFO L226 Difference]: Without dead ends: 141 [2020-10-27 14:24:34,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:24:34,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-27 14:24:34,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2020-10-27 14:24:34,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-27 14:24:34,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 142 transitions. [2020-10-27 14:24:34,352 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 142 transitions. Word has length 129 [2020-10-27 14:24:34,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:34,353 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 142 transitions. [2020-10-27 14:24:34,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:24:34,353 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 142 transitions. [2020-10-27 14:24:34,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-27 14:24:34,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:34,354 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:34,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:24:34,355 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:34,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:34,355 INFO L82 PathProgramCache]: Analyzing trace with hash -47189556, now seen corresponding path program 23 times [2020-10-27 14:24:34,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:34,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921507384] [2020-10-27 14:24:34,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:34,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:34,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:39,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:39,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 14:24:39,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:24:39,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5133 [2020-10-27 14:24:39,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:39,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:24:39,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 14:24:39,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 14:24:39,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:40,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:40,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:40,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:40,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:40,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:40,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:40,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:40,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1334 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-10-27 14:24:40,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921507384] [2020-10-27 14:24:40,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:40,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:24:40,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546744133] [2020-10-27 14:24:40,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:24:40,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:40,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:24:40,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:24:40,057 INFO L87 Difference]: Start difference. First operand 139 states and 142 transitions. Second operand 27 states. [2020-10-27 14:24:40,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:40,555 INFO L93 Difference]: Finished difference Result 255 states and 263 transitions. [2020-10-27 14:24:40,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 14:24:40,556 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 134 [2020-10-27 14:24:40,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:40,558 INFO L225 Difference]: With dead ends: 255 [2020-10-27 14:24:40,558 INFO L226 Difference]: Without dead ends: 146 [2020-10-27 14:24:40,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:24:40,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-27 14:24:40,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2020-10-27 14:24:40,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-27 14:24:40,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 147 transitions. [2020-10-27 14:24:40,566 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 147 transitions. Word has length 134 [2020-10-27 14:24:40,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:40,566 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 147 transitions. [2020-10-27 14:24:40,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:24:40,567 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 147 transitions. [2020-10-27 14:24:40,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 14:24:40,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:40,569 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:40,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:24:40,570 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:40,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:40,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1427230902, now seen corresponding path program 24 times [2020-10-27 14:24:40,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:40,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188324133] [2020-10-27 14:24:40,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:40,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:40,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:45,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:45,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 14:24:45,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:24:45,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-27 14:24:45,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:45,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:24:45,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 14:24:45,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:24:45,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:46,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:46,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:46,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:46,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:46,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:46,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:46,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:46,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:46,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:46,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:46,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:46,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-10-27 14:24:46,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188324133] [2020-10-27 14:24:46,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:46,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:24:46,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008101185] [2020-10-27 14:24:46,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:24:46,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:46,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:24:46,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:24:46,254 INFO L87 Difference]: Start difference. First operand 144 states and 147 transitions. Second operand 28 states. [2020-10-27 14:24:46,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:46,766 INFO L93 Difference]: Finished difference Result 264 states and 272 transitions. [2020-10-27 14:24:46,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:24:46,767 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 139 [2020-10-27 14:24:46,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:46,768 INFO L225 Difference]: With dead ends: 264 [2020-10-27 14:24:46,768 INFO L226 Difference]: Without dead ends: 151 [2020-10-27 14:24:46,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:24:46,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-27 14:24:46,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-10-27 14:24:46,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-27 14:24:46,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 152 transitions. [2020-10-27 14:24:46,788 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 152 transitions. Word has length 139 [2020-10-27 14:24:46,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:46,788 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 152 transitions. [2020-10-27 14:24:46,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:24:46,788 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 152 transitions. [2020-10-27 14:24:46,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 14:24:46,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:46,790 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:46,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:24:46,791 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:46,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:46,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1664141316, now seen corresponding path program 25 times [2020-10-27 14:24:46,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:46,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128735515] [2020-10-27 14:24:46,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:46,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:47,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:52,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:52,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 14:24:52,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:24:52,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5223 [2020-10-27 14:24:52,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:52,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:24:52,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 14:24:52,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 14:24:52,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:52,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:52,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:52,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:52,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:52,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:52,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:24:52,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:52,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:52,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:52,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:52,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:52,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-10-27 14:24:52,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128735515] [2020-10-27 14:24:52,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:52,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 14:24:52,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319888469] [2020-10-27 14:24:52,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 14:24:52,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:52,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 14:24:52,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:24:52,685 INFO L87 Difference]: Start difference. First operand 149 states and 152 transitions. Second operand 29 states. [2020-10-27 14:24:53,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:53,082 INFO L93 Difference]: Finished difference Result 273 states and 281 transitions. [2020-10-27 14:24:53,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 14:24:53,082 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 144 [2020-10-27 14:24:53,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:53,084 INFO L225 Difference]: With dead ends: 273 [2020-10-27 14:24:53,084 INFO L226 Difference]: Without dead ends: 156 [2020-10-27 14:24:53,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:24:53,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-27 14:24:53,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 154. [2020-10-27 14:24:53,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-27 14:24:53,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 157 transitions. [2020-10-27 14:24:53,092 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 157 transitions. Word has length 144 [2020-10-27 14:24:53,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:53,093 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 157 transitions. [2020-10-27 14:24:53,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 14:24:53,093 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 157 transitions. [2020-10-27 14:24:53,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 14:24:53,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:53,094 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:53,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:24:53,094 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:53,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:53,095 INFO L82 PathProgramCache]: Analyzing trace with hash -137664146, now seen corresponding path program 26 times [2020-10-27 14:24:53,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:53,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256667095] [2020-10-27 14:24:53,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:53,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:53,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:58,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:58,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 14:24:58,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:24:58,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 14:24:58,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:58,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:24:58,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 14:24:58,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 14:24:58,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:58,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:24:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:58,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:58,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:24:58,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:24:58,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:24:58,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:24:58,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:24:58,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:24:58,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:24:58,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:24:58,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:24:58,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1703 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2020-10-27 14:24:58,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256667095] [2020-10-27 14:24:58,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:24:58,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:24:58,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473957059] [2020-10-27 14:24:58,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:24:58,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:24:58,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:24:58,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:24:58,821 INFO L87 Difference]: Start difference. First operand 154 states and 157 transitions. Second operand 30 states. [2020-10-27 14:24:59,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:24:59,348 INFO L93 Difference]: Finished difference Result 282 states and 290 transitions. [2020-10-27 14:24:59,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:24:59,348 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 149 [2020-10-27 14:24:59,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:24:59,349 INFO L225 Difference]: With dead ends: 282 [2020-10-27 14:24:59,350 INFO L226 Difference]: Without dead ends: 161 [2020-10-27 14:24:59,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:24:59,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-27 14:24:59,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 159. [2020-10-27 14:24:59,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-27 14:24:59,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 162 transitions. [2020-10-27 14:24:59,357 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 162 transitions. Word has length 149 [2020-10-27 14:24:59,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:24:59,357 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 162 transitions. [2020-10-27 14:24:59,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:24:59,357 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 162 transitions. [2020-10-27 14:24:59,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 14:24:59,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:24:59,360 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:24:59,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:24:59,360 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:24:59,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:24:59,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1919383100, now seen corresponding path program 27 times [2020-10-27 14:24:59,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:24:59,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962968273] [2020-10-27 14:24:59,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:24:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:24:59,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:24:59,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:04,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:04,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 14:25:04,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:04,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5116 [2020-10-27 14:25:04,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:04,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:25:04,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 14:25:04,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:25:04,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:05,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:05,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:05,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:05,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:05,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:05,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:25:05,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:05,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:05,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:05,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:05,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:05,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1836 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2020-10-27 14:25:05,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962968273] [2020-10-27 14:25:05,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:05,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 14:25:05,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792503969] [2020-10-27 14:25:05,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 14:25:05,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:05,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 14:25:05,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:25:05,296 INFO L87 Difference]: Start difference. First operand 159 states and 162 transitions. Second operand 31 states. [2020-10-27 14:25:05,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:05,786 INFO L93 Difference]: Finished difference Result 291 states and 299 transitions. [2020-10-27 14:25:05,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 14:25:05,787 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 154 [2020-10-27 14:25:05,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:05,788 INFO L225 Difference]: With dead ends: 291 [2020-10-27 14:25:05,788 INFO L226 Difference]: Without dead ends: 166 [2020-10-27 14:25:05,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:25:05,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-27 14:25:05,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2020-10-27 14:25:05,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-27 14:25:05,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 167 transitions. [2020-10-27 14:25:05,796 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 167 transitions. Word has length 154 [2020-10-27 14:25:05,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:05,796 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 167 transitions. [2020-10-27 14:25:05,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 14:25:05,796 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 167 transitions. [2020-10-27 14:25:05,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 14:25:05,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:05,798 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:05,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:25:05,798 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:05,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:05,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1679997478, now seen corresponding path program 28 times [2020-10-27 14:25:05,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:05,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065047053] [2020-10-27 14:25:05,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:05,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:05,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:10,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:10,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 14:25:10,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:10,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-27 14:25:10,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:10,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:25:10,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 14:25:10,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 14:25:10,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:11,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:11,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:11,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:11,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:11,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:11,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:11,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:11,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:11,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:11,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:11,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:11,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1974 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2020-10-27 14:25:11,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065047053] [2020-10-27 14:25:11,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:11,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 14:25:11,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755912517] [2020-10-27 14:25:11,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 14:25:11,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:11,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 14:25:11,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:25:11,597 INFO L87 Difference]: Start difference. First operand 164 states and 167 transitions. Second operand 32 states. [2020-10-27 14:25:12,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:12,151 INFO L93 Difference]: Finished difference Result 300 states and 308 transitions. [2020-10-27 14:25:12,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:25:12,152 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 159 [2020-10-27 14:25:12,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:12,154 INFO L225 Difference]: With dead ends: 300 [2020-10-27 14:25:12,154 INFO L226 Difference]: Without dead ends: 171 [2020-10-27 14:25:12,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:25:12,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-27 14:25:12,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2020-10-27 14:25:12,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-27 14:25:12,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 172 transitions. [2020-10-27 14:25:12,164 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 172 transitions. Word has length 159 [2020-10-27 14:25:12,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:12,165 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 172 transitions. [2020-10-27 14:25:12,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 14:25:12,165 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 172 transitions. [2020-10-27 14:25:12,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-27 14:25:12,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:12,166 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:12,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:25:12,166 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:12,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:12,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1578630260, now seen corresponding path program 29 times [2020-10-27 14:25:12,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:12,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282265357] [2020-10-27 14:25:12,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:12,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:12,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:17,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:17,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 14:25:17,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:17,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5104 [2020-10-27 14:25:17,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:17,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:25:17,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 14:25:17,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 14:25:17,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:18,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:18,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:18,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:18,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:18,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:18,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:18,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:18,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:18,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:18,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:18,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:18,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2117 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2020-10-27 14:25:18,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282265357] [2020-10-27 14:25:18,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:18,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 14:25:18,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413013948] [2020-10-27 14:25:18,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 14:25:18,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:18,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 14:25:18,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:25:18,095 INFO L87 Difference]: Start difference. First operand 169 states and 172 transitions. Second operand 33 states. [2020-10-27 14:25:18,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:18,713 INFO L93 Difference]: Finished difference Result 309 states and 317 transitions. [2020-10-27 14:25:18,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 14:25:18,714 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 164 [2020-10-27 14:25:18,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:18,716 INFO L225 Difference]: With dead ends: 309 [2020-10-27 14:25:18,716 INFO L226 Difference]: Without dead ends: 176 [2020-10-27 14:25:18,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:25:18,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-27 14:25:18,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 174. [2020-10-27 14:25:18,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-27 14:25:18,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 177 transitions. [2020-10-27 14:25:18,724 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 177 transitions. Word has length 164 [2020-10-27 14:25:18,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:18,725 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 177 transitions. [2020-10-27 14:25:18,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 14:25:18,725 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 177 transitions. [2020-10-27 14:25:18,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-27 14:25:18,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:18,726 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:18,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:25:18,726 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:18,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:18,727 INFO L82 PathProgramCache]: Analyzing trace with hash -133971234, now seen corresponding path program 30 times [2020-10-27 14:25:18,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:18,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689736588] [2020-10-27 14:25:18,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:18,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:18,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:24,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:24,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-27 14:25:24,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:24,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5434 [2020-10-27 14:25:24,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 14:25:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 14:25:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:25:24,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:24,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:24,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:24,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:24,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:24,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:24,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:24,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:24,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:24,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:24,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:24,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:25,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2020-10-27 14:25:25,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689736588] [2020-10-27 14:25:25,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:25,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 14:25:25,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157886075] [2020-10-27 14:25:25,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 14:25:25,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:25,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 14:25:25,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:25:25,020 INFO L87 Difference]: Start difference. First operand 174 states and 177 transitions. Second operand 34 states. [2020-10-27 14:25:25,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:25,507 INFO L93 Difference]: Finished difference Result 318 states and 326 transitions. [2020-10-27 14:25:25,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 14:25:25,508 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 169 [2020-10-27 14:25:25,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:25,510 INFO L225 Difference]: With dead ends: 318 [2020-10-27 14:25:25,510 INFO L226 Difference]: Without dead ends: 181 [2020-10-27 14:25:25,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:25:25,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-27 14:25:25,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2020-10-27 14:25:25,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-27 14:25:25,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 182 transitions. [2020-10-27 14:25:25,519 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 182 transitions. Word has length 169 [2020-10-27 14:25:25,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:25,520 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 182 transitions. [2020-10-27 14:25:25,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-27 14:25:25,520 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 182 transitions. [2020-10-27 14:25:25,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-27 14:25:25,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:25,521 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:25,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:25:25,521 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:25,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:25,522 INFO L82 PathProgramCache]: Analyzing trace with hash -628729172, now seen corresponding path program 31 times [2020-10-27 14:25:25,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:25,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839977681] [2020-10-27 14:25:25,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:25,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:25,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:30,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:30,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 14:25:30,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:30,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-27 14:25:30,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:30,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 14:25:30,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 14:25:30,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 14:25:30,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:31,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:31,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:31,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:31,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:31,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:31,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:31,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:31,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:31,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:31,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:31,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:31,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2418 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2020-10-27 14:25:31,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839977681] [2020-10-27 14:25:31,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:31,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-27 14:25:31,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899093093] [2020-10-27 14:25:31,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-27 14:25:31,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:31,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-27 14:25:31,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:25:31,518 INFO L87 Difference]: Start difference. First operand 179 states and 182 transitions. Second operand 35 states. [2020-10-27 14:25:32,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:32,139 INFO L93 Difference]: Finished difference Result 327 states and 335 transitions. [2020-10-27 14:25:32,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 14:25:32,139 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 174 [2020-10-27 14:25:32,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:32,141 INFO L225 Difference]: With dead ends: 327 [2020-10-27 14:25:32,141 INFO L226 Difference]: Without dead ends: 186 [2020-10-27 14:25:32,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:25:32,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-27 14:25:32,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2020-10-27 14:25:32,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-27 14:25:32,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 187 transitions. [2020-10-27 14:25:32,154 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 187 transitions. Word has length 174 [2020-10-27 14:25:32,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:32,154 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 187 transitions. [2020-10-27 14:25:32,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-27 14:25:32,154 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 187 transitions. [2020-10-27 14:25:32,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-27 14:25:32,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:32,156 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:32,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 14:25:32,157 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:32,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:32,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1616544662, now seen corresponding path program 32 times [2020-10-27 14:25:32,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:32,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252427781] [2020-10-27 14:25:32,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:32,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:32,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:37,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:37,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 14:25:37,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:37,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5161 [2020-10-27 14:25:37,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:37,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 14:25:37,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 14:25:37,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 14:25:37,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:38,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:38,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:38,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:38,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:38,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:38,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:38,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:38,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:38,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:38,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:38,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:38,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2576 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2020-10-27 14:25:38,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252427781] [2020-10-27 14:25:38,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:38,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-27 14:25:38,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388255811] [2020-10-27 14:25:38,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-27 14:25:38,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:38,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-27 14:25:38,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:25:38,282 INFO L87 Difference]: Start difference. First operand 184 states and 187 transitions. Second operand 36 states. [2020-10-27 14:25:38,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:38,936 INFO L93 Difference]: Finished difference Result 336 states and 344 transitions. [2020-10-27 14:25:38,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 14:25:38,936 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 179 [2020-10-27 14:25:38,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:38,938 INFO L225 Difference]: With dead ends: 336 [2020-10-27 14:25:38,939 INFO L226 Difference]: Without dead ends: 191 [2020-10-27 14:25:38,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:25:38,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-27 14:25:38,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 189. [2020-10-27 14:25:38,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-27 14:25:38,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 192 transitions. [2020-10-27 14:25:38,947 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 192 transitions. Word has length 179 [2020-10-27 14:25:38,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:38,947 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 192 transitions. [2020-10-27 14:25:38,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-27 14:25:38,947 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 192 transitions. [2020-10-27 14:25:38,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-27 14:25:38,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:38,949 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:38,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 14:25:38,949 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:38,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:38,950 INFO L82 PathProgramCache]: Analyzing trace with hash -587820828, now seen corresponding path program 33 times [2020-10-27 14:25:38,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:38,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993886189] [2020-10-27 14:25:38,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:39,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:39,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:44,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:44,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 14:25:44,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:44,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5157 [2020-10-27 14:25:44,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-27 14:25:44,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 14:25:44,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 14:25:44,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:45,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:45,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:45,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:45,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:45,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:45,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:45,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:45,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:45,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2739 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2020-10-27 14:25:45,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993886189] [2020-10-27 14:25:45,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:45,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-27 14:25:45,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963090195] [2020-10-27 14:25:45,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-27 14:25:45,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:45,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-27 14:25:45,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:25:45,153 INFO L87 Difference]: Start difference. First operand 189 states and 192 transitions. Second operand 37 states. [2020-10-27 14:25:45,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:45,740 INFO L93 Difference]: Finished difference Result 345 states and 353 transitions. [2020-10-27 14:25:45,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 14:25:45,741 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 184 [2020-10-27 14:25:45,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:45,742 INFO L225 Difference]: With dead ends: 345 [2020-10-27 14:25:45,742 INFO L226 Difference]: Without dead ends: 196 [2020-10-27 14:25:45,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:25:45,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-27 14:25:45,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2020-10-27 14:25:45,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-27 14:25:45,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 197 transitions. [2020-10-27 14:25:45,753 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 197 transitions. Word has length 184 [2020-10-27 14:25:45,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:45,753 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 197 transitions. [2020-10-27 14:25:45,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-27 14:25:45,754 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 197 transitions. [2020-10-27 14:25:45,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-27 14:25:45,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:45,755 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:45,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 14:25:45,755 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:45,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:45,756 INFO L82 PathProgramCache]: Analyzing trace with hash -653067186, now seen corresponding path program 34 times [2020-10-27 14:25:45,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:45,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558213740] [2020-10-27 14:25:45,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:45,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:46,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:50,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:50,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-27 14:25:50,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:50,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-27 14:25:50,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-27 14:25:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 14:25:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 14:25:50,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:51,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:51,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:51,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:51,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:51,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:51,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:51,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:51,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:51,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:51,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:51,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:51,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2907 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2020-10-27 14:25:51,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558213740] [2020-10-27 14:25:51,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:51,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-27 14:25:51,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470195834] [2020-10-27 14:25:51,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-27 14:25:51,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:51,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-27 14:25:51,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:25:51,971 INFO L87 Difference]: Start difference. First operand 194 states and 197 transitions. Second operand 38 states. [2020-10-27 14:25:52,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:52,511 INFO L93 Difference]: Finished difference Result 354 states and 362 transitions. [2020-10-27 14:25:52,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 14:25:52,512 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 189 [2020-10-27 14:25:52,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:52,513 INFO L225 Difference]: With dead ends: 354 [2020-10-27 14:25:52,513 INFO L226 Difference]: Without dead ends: 201 [2020-10-27 14:25:52,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:25:52,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-27 14:25:52,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2020-10-27 14:25:52,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-27 14:25:52,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 202 transitions. [2020-10-27 14:25:52,522 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 202 transitions. Word has length 189 [2020-10-27 14:25:52,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:52,522 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 202 transitions. [2020-10-27 14:25:52,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-27 14:25:52,522 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 202 transitions. [2020-10-27 14:25:52,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-27 14:25:52,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:52,524 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:52,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 14:25:52,524 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:52,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:52,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1538039580, now seen corresponding path program 35 times [2020-10-27 14:25:52,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:52,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147801954] [2020-10-27 14:25:52,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:52,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:52,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:57,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:57,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-27 14:25:57,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:25:57,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-27 14:25:57,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:57,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-27 14:25:57,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 14:25:57,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 14:25:57,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:58,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:25:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:58,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:58,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:25:58,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:25:58,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:25:58,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:25:58,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:25:58,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:25:58,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:25:58,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:25:58,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:25:58,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 1855 trivial. 0 not checked. [2020-10-27 14:25:58,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147801954] [2020-10-27 14:25:58,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:25:58,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-27 14:25:58,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401875768] [2020-10-27 14:25:58,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-27 14:25:58,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:25:58,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-27 14:25:58,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:25:58,743 INFO L87 Difference]: Start difference. First operand 199 states and 202 transitions. Second operand 39 states. [2020-10-27 14:25:59,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:25:59,329 INFO L93 Difference]: Finished difference Result 363 states and 371 transitions. [2020-10-27 14:25:59,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-27 14:25:59,330 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 194 [2020-10-27 14:25:59,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:25:59,332 INFO L225 Difference]: With dead ends: 363 [2020-10-27 14:25:59,332 INFO L226 Difference]: Without dead ends: 206 [2020-10-27 14:25:59,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:25:59,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-27 14:25:59,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 204. [2020-10-27 14:25:59,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-27 14:25:59,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 207 transitions. [2020-10-27 14:25:59,342 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 207 transitions. Word has length 194 [2020-10-27 14:25:59,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:25:59,342 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 207 transitions. [2020-10-27 14:25:59,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-27 14:25:59,343 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 207 transitions. [2020-10-27 14:25:59,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-27 14:25:59,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:25:59,344 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:25:59,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-27 14:25:59,344 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:25:59,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:25:59,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1830366470, now seen corresponding path program 36 times [2020-10-27 14:25:59,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:25:59,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660484926] [2020-10-27 14:25:59,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:25:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:25:59,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:25:59,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:04,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:04,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-27 14:26:04,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:26:04,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-27 14:26:04,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:04,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-27 14:26:04,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 14:26:04,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 14:26:04,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:05,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:05,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:05,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:05,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:05,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:05,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:26:05,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:05,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:05,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:05,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:05,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:05,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3258 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2020-10-27 14:26:05,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660484926] [2020-10-27 14:26:05,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:05,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-27 14:26:05,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911923940] [2020-10-27 14:26:05,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-27 14:26:05,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:05,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-27 14:26:05,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:26:05,687 INFO L87 Difference]: Start difference. First operand 204 states and 207 transitions. Second operand 40 states. [2020-10-27 14:26:06,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:06,469 INFO L93 Difference]: Finished difference Result 372 states and 380 transitions. [2020-10-27 14:26:06,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 14:26:06,469 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 199 [2020-10-27 14:26:06,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:06,471 INFO L225 Difference]: With dead ends: 372 [2020-10-27 14:26:06,471 INFO L226 Difference]: Without dead ends: 211 [2020-10-27 14:26:06,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:26:06,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-27 14:26:06,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2020-10-27 14:26:06,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-27 14:26:06,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 212 transitions. [2020-10-27 14:26:06,479 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 212 transitions. Word has length 199 [2020-10-27 14:26:06,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:06,479 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 212 transitions. [2020-10-27 14:26:06,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-27 14:26:06,479 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 212 transitions. [2020-10-27 14:26:06,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-27 14:26:06,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:06,481 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:06,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-27 14:26:06,481 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:06,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:06,482 INFO L82 PathProgramCache]: Analyzing trace with hash 233604436, now seen corresponding path program 37 times [2020-10-27 14:26:06,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:06,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716728243] [2020-10-27 14:26:06,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:06,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:06,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:11,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:11,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 14:26:11,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:26:11,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5111 [2020-10-27 14:26:11,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-27 14:26:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-27 14:26:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 14:26:11,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:12,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:12,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:12,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:12,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:12,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:12,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:26:12,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:12,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:12,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:12,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:12,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:12,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3441 backedges. 0 proven. 1369 refuted. 0 times theorem prover too weak. 2072 trivial. 0 not checked. [2020-10-27 14:26:12,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716728243] [2020-10-27 14:26:12,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:12,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-27 14:26:12,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062761502] [2020-10-27 14:26:12,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-27 14:26:12,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:12,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-27 14:26:12,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 14:26:12,838 INFO L87 Difference]: Start difference. First operand 209 states and 212 transitions. Second operand 41 states. [2020-10-27 14:26:13,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:13,562 INFO L93 Difference]: Finished difference Result 381 states and 389 transitions. [2020-10-27 14:26:13,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-27 14:26:13,562 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 204 [2020-10-27 14:26:13,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:13,564 INFO L225 Difference]: With dead ends: 381 [2020-10-27 14:26:13,565 INFO L226 Difference]: Without dead ends: 216 [2020-10-27 14:26:13,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 14:26:13,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-27 14:26:13,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 214. [2020-10-27 14:26:13,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-27 14:26:13,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 217 transitions. [2020-10-27 14:26:13,573 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 217 transitions. Word has length 204 [2020-10-27 14:26:13,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:13,574 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 217 transitions. [2020-10-27 14:26:13,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-27 14:26:13,574 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 217 transitions. [2020-10-27 14:26:13,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-27 14:26:13,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:13,575 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:13,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-27 14:26:13,576 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:13,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:13,576 INFO L82 PathProgramCache]: Analyzing trace with hash 911807934, now seen corresponding path program 38 times [2020-10-27 14:26:13,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:13,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800356268] [2020-10-27 14:26:13,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:13,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:13,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:18,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:18,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-27 14:26:18,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:26:18,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5127 [2020-10-27 14:26:18,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:18,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-27 14:26:18,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 14:26:18,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 14:26:18,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:19,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:20,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:20,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:20,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:20,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:20,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:26:20,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:20,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:20,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3629 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 2185 trivial. 0 not checked. [2020-10-27 14:26:20,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800356268] [2020-10-27 14:26:20,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:20,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-27 14:26:20,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991581165] [2020-10-27 14:26:20,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-27 14:26:20,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:20,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-27 14:26:20,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 14:26:20,031 INFO L87 Difference]: Start difference. First operand 214 states and 217 transitions. Second operand 42 states. [2020-10-27 14:26:20,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:20,822 INFO L93 Difference]: Finished difference Result 390 states and 398 transitions. [2020-10-27 14:26:20,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 14:26:20,823 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 209 [2020-10-27 14:26:20,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:20,824 INFO L225 Difference]: With dead ends: 390 [2020-10-27 14:26:20,825 INFO L226 Difference]: Without dead ends: 221 [2020-10-27 14:26:20,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 14:26:20,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-27 14:26:20,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 219. [2020-10-27 14:26:20,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-27 14:26:20,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 222 transitions. [2020-10-27 14:26:20,836 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 222 transitions. Word has length 209 [2020-10-27 14:26:20,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:20,836 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 222 transitions. [2020-10-27 14:26:20,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-27 14:26:20,836 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 222 transitions. [2020-10-27 14:26:20,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 14:26:20,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:20,838 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:20,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-27 14:26:20,838 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:20,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:20,838 INFO L82 PathProgramCache]: Analyzing trace with hash 737821580, now seen corresponding path program 39 times [2020-10-27 14:26:20,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:20,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63758447] [2020-10-27 14:26:20,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:20,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:21,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking...