/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:37:41,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:37:41,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:37:41,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:37:41,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:37:41,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:37:41,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:37:41,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:37:41,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:37:41,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:37:41,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:37:41,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:37:41,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:37:41,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:37:41,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:37:41,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:37:41,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:37:41,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:37:41,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:37:41,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:37:41,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:37:41,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:37:41,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:37:41,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:37:41,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:37:41,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:37:41,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:37:41,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:37:41,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:37:41,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:37:41,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:37:41,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:37:41,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:37:41,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:37:41,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:37:41,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:37:41,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:37:41,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:37:41,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:37:41,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:37:41,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:37:41,748 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 17:37:41,805 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:37:41,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:37:41,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:37:41,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:37:41,811 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:37:41,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:37:41,811 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:37:41,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:37:41,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:37:41,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:37:41,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:37:41,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:37:41,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:37:41,813 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:37:41,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:37:41,814 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:37:41,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:37:41,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:37:41,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:37:41,815 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:37:41,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:37:41,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:37:41,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:37:41,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:37:41,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:37:41,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:37:41,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:37:41,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:37:41,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:37:41,818 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:37:42,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:37:42,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:37:42,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:37:42,322 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:37:42,323 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:37:42,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label01.c [2020-10-27 17:37:42,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1164f6102/7fdf61e4fcdc4fe6a3496228ba8704bb/FLAG042b6e9c7 [2020-10-27 17:37:43,450 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:37:43,451 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label01.c [2020-10-27 17:37:43,497 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1164f6102/7fdf61e4fcdc4fe6a3496228ba8704bb/FLAG042b6e9c7 [2020-10-27 17:37:43,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1164f6102/7fdf61e4fcdc4fe6a3496228ba8704bb [2020-10-27 17:37:43,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:37:43,906 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:37:43,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:37:43,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:37:43,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:37:43,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:37:43" (1/1) ... [2020-10-27 17:37:43,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ba1ae84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:43, skipping insertion in model container [2020-10-27 17:37:43,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:37:43" (1/1) ... [2020-10-27 17:37:43,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:37:44,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:37:45,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:37:45,558 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:37:46,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:37:46,185 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:37:46,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:46 WrapperNode [2020-10-27 17:37:46,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:37:46,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:37:46,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:37:46,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:37:46,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:46" (1/1) ... [2020-10-27 17:37:46,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:46" (1/1) ... [2020-10-27 17:37:46,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:46" (1/1) ... [2020-10-27 17:37:46,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:46" (1/1) ... [2020-10-27 17:37:46,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:46" (1/1) ... [2020-10-27 17:37:46,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:46" (1/1) ... [2020-10-27 17:37:46,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:46" (1/1) ... [2020-10-27 17:37:46,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:37:46,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:37:46,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:37:46,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:37:46,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:46" (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 17:37:46,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:37:46,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:37:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:37:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:37:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 17:37:46,626 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 17:37:46,626 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 17:37:46,627 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:37:46,627 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:37:46,627 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 17:37:46,628 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 17:37:46,628 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 17:37:46,628 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:37:46,629 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:37:46,629 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:37:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:37:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:37:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:37:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:37:46,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:37:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:37:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:37:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:37:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:37:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:37:52,297 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:37:52,298 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:37:52,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:37:52 BoogieIcfgContainer [2020-10-27 17:37:52,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:37:52,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:37:52,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:37:52,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:37:52,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:37:43" (1/3) ... [2020-10-27 17:37:52,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3040cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:37:52, skipping insertion in model container [2020-10-27 17:37:52,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:37:46" (2/3) ... [2020-10-27 17:37:52,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3040cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:37:52, skipping insertion in model container [2020-10-27 17:37:52,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:37:52" (3/3) ... [2020-10-27 17:37:52,310 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label01.c [2020-10-27 17:37:52,323 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:37:52,329 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:37:52,342 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:37:52,381 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:37:52,381 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:37:52,381 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:37:52,381 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:37:52,381 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:37:52,382 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:37:52,382 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:37:52,382 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:37:52,416 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-27 17:37:52,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 17:37:52,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:37:52,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:37:52,430 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:37:52,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:37:52,443 INFO L82 PathProgramCache]: Analyzing trace with hash -2041990092, now seen corresponding path program 1 times [2020-10-27 17:37:52,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:37:52,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341197366] [2020-10-27 17:37:52,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:37:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:52,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:53,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:53,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 17:37:53,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:53,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-10-27 17:37:53,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:53,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:37:53,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:37:53,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 17:37:53,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:37:53,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:37:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:53,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:53,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:53,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:37:53,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:53,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 17:37:53,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:53,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:37:53,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:53,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:37:53,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:53,501 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 17:37:53,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341197366] [2020-10-27 17:37:53,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:37:53,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 17:37:53,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886422632] [2020-10-27 17:37:53,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:37:53,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:37:53,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:37:53,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:37:53,537 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-27 17:38:05,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:38:05,716 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-27 17:38:05,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:38:05,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-27 17:38:05,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:38:05,755 INFO L225 Difference]: With dead ends: 2476 [2020-10-27 17:38:05,755 INFO L226 Difference]: Without dead ends: 1569 [2020-10-27 17:38:05,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:38:05,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-27 17:38:05,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-27 17:38:05,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-27 17:38:05,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2870 transitions. [2020-10-27 17:38:05,991 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2870 transitions. Word has length 54 [2020-10-27 17:38:05,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:38:05,992 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2870 transitions. [2020-10-27 17:38:05,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:38:05,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2870 transitions. [2020-10-27 17:38:06,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-27 17:38:06,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:38:06,012 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:38:06,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:38:06,012 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:38:06,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:38:06,014 INFO L82 PathProgramCache]: Analyzing trace with hash 604794510, now seen corresponding path program 1 times [2020-10-27 17:38:06,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:38:06,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729181598] [2020-10-27 17:38:06,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:38:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:06,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:06,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:07,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:07,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 17:38:07,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:38:07,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1330 [2020-10-27 17:38:07,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:07,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:07,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-27 17:38:07,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 17:38:07,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:38:07,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:38:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:07,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:07,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:07,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:38:07,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:07,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 17:38:07,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:07,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:07,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:07,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:07,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:07,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:38:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:07,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:07,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:07,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 17:38:07,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:07,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 17:38:07,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:07,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:38:07,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:07,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 17:38:07,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:38:07,855 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:38:07,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729181598] [2020-10-27 17:38:07,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:38:07,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:38:07,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721826589] [2020-10-27 17:38:07,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:38:07,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:38:07,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:38:07,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:38:07,863 INFO L87 Difference]: Start difference. First operand 1554 states and 2870 transitions. Second operand 5 states. [2020-10-27 17:38:19,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:38:19,341 INFO L93 Difference]: Finished difference Result 4673 states and 8696 transitions. [2020-10-27 17:38:19,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:38:19,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-27 17:38:19,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:38:19,362 INFO L225 Difference]: With dead ends: 4673 [2020-10-27 17:38:19,362 INFO L226 Difference]: Without dead ends: 3125 [2020-10-27 17:38:19,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:38:19,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-27 17:38:19,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3110. [2020-10-27 17:38:19,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3110 states. [2020-10-27 17:38:19,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 5001 transitions. [2020-10-27 17:38:19,478 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 5001 transitions. Word has length 131 [2020-10-27 17:38:19,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:38:19,479 INFO L481 AbstractCegarLoop]: Abstraction has 3110 states and 5001 transitions. [2020-10-27 17:38:19,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:38:19,479 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 5001 transitions. [2020-10-27 17:38:19,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-27 17:38:19,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:38:19,483 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:38:19,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:38:19,483 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:38:19,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:38:19,484 INFO L82 PathProgramCache]: Analyzing trace with hash 986645834, now seen corresponding path program 1 times [2020-10-27 17:38:19,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:38:19,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442660024] [2020-10-27 17:38:19,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:38:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:19,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:19,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:20,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:20,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:20,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 17:38:20,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:38:20,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1349 [2020-10-27 17:38:20,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:20,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:20,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-27 17:38:20,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 17:38:20,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:21,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:38:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:21,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:21,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:21,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:38:21,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:21,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 17:38:21,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:21,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:21,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:21,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:21,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:21,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:38:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:21,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:21,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:21,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 17:38:21,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:21,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 17:38:21,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:38:21,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:21,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 17:38:21,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:21,244 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:38:21,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442660024] [2020-10-27 17:38:21,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:38:21,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:38:21,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084275377] [2020-10-27 17:38:21,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:38:21,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:38:21,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:38:21,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:38:21,250 INFO L87 Difference]: Start difference. First operand 3110 states and 5001 transitions. Second operand 5 states. [2020-10-27 17:38:36,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:38:36,125 INFO L93 Difference]: Finished difference Result 9336 states and 15243 transitions. [2020-10-27 17:38:36,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:38:36,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-27 17:38:36,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:38:36,170 INFO L225 Difference]: With dead ends: 9336 [2020-10-27 17:38:36,170 INFO L226 Difference]: Without dead ends: 6232 [2020-10-27 17:38:36,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:38:36,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6232 states. [2020-10-27 17:38:36,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6232 to 6216. [2020-10-27 17:38:36,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6216 states. [2020-10-27 17:38:36,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 9149 transitions. [2020-10-27 17:38:36,400 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 9149 transitions. Word has length 133 [2020-10-27 17:38:36,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:38:36,401 INFO L481 AbstractCegarLoop]: Abstraction has 6216 states and 9149 transitions. [2020-10-27 17:38:36,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:38:36,401 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 9149 transitions. [2020-10-27 17:38:36,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 17:38:36,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:38:36,406 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:38:36,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:38:36,412 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:38:36,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:38:36,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1170703968, now seen corresponding path program 1 times [2020-10-27 17:38:36,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:38:36,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045753759] [2020-10-27 17:38:36,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:38:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:36,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:36,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:37,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:37,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-27 17:38:37,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:38:37,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 932 [2020-10-27 17:38:37,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:37,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:37,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-27 17:38:37,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 17:38:37,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:37,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:38:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:37,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:37,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:37,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:38:37,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:37,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 17:38:37,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:37,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:37,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:37,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:37,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:37,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:38:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:37,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:37,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:37,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 17:38:37,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:37,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 17:38:37,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:37,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:38:37,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:37,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 17:38:37,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:37,782 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:38:37,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045753759] [2020-10-27 17:38:37,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:38:37,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:38:37,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155328001] [2020-10-27 17:38:37,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:38:37,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:38:37,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:38:37,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:38:37,791 INFO L87 Difference]: Start difference. First operand 6216 states and 9149 transitions. Second operand 5 states. [2020-10-27 17:38:51,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:38:51,792 INFO L93 Difference]: Finished difference Result 17876 states and 26960 transitions. [2020-10-27 17:38:51,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:38:51,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-27 17:38:51,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:38:51,848 INFO L225 Difference]: With dead ends: 17876 [2020-10-27 17:38:51,848 INFO L226 Difference]: Without dead ends: 11666 [2020-10-27 17:38:51,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:38:51,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11666 states. [2020-10-27 17:38:52,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11666 to 11658. [2020-10-27 17:38:52,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11658 states. [2020-10-27 17:38:52,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11658 states to 11658 states and 15708 transitions. [2020-10-27 17:38:52,224 INFO L78 Accepts]: Start accepts. Automaton has 11658 states and 15708 transitions. Word has length 144 [2020-10-27 17:38:52,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:38:52,226 INFO L481 AbstractCegarLoop]: Abstraction has 11658 states and 15708 transitions. [2020-10-27 17:38:52,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:38:52,226 INFO L276 IsEmpty]: Start isEmpty. Operand 11658 states and 15708 transitions. [2020-10-27 17:38:52,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-27 17:38:52,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:38:52,231 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:38:52,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:38:52,232 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:38:52,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:38:52,232 INFO L82 PathProgramCache]: Analyzing trace with hash -2030124362, now seen corresponding path program 1 times [2020-10-27 17:38:52,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:38:52,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269756891] [2020-10-27 17:38:52,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:38:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:52,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:52,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:53,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:53,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 17:38:53,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:38:53,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1040 [2020-10-27 17:38:53,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:53,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:53,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-27 17:38:53,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 17:38:53,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:53,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:38:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:53,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:53,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:53,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:38:53,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:53,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:38:53,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:53,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:53,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:53,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:53,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:53,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:38:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:53,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:53,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:53,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 17:38:53,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:53,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 17:38:53,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:53,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:38:53,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:53,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 17:38:53,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:53,810 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:38:53,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269756891] [2020-10-27 17:38:53,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:38:53,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:38:53,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202092510] [2020-10-27 17:38:53,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:38:53,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:38:53,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:38:53,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:38:53,813 INFO L87 Difference]: Start difference. First operand 11658 states and 15708 transitions. Second operand 5 states. [2020-10-27 17:39:09,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:39:09,415 INFO L93 Difference]: Finished difference Result 27972 states and 39375 transitions. [2020-10-27 17:39:09,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:39:09,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-27 17:39:09,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:39:09,481 INFO L225 Difference]: With dead ends: 27972 [2020-10-27 17:39:09,481 INFO L226 Difference]: Without dead ends: 16320 [2020-10-27 17:39:09,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:39:09,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16320 states. [2020-10-27 17:39:09,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16320 to 16308. [2020-10-27 17:39:09,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16308 states. [2020-10-27 17:39:09,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16308 states to 16308 states and 21463 transitions. [2020-10-27 17:39:09,907 INFO L78 Accepts]: Start accepts. Automaton has 16308 states and 21463 transitions. Word has length 175 [2020-10-27 17:39:09,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:39:09,909 INFO L481 AbstractCegarLoop]: Abstraction has 16308 states and 21463 transitions. [2020-10-27 17:39:09,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:39:09,910 INFO L276 IsEmpty]: Start isEmpty. Operand 16308 states and 21463 transitions. [2020-10-27 17:39:09,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-27 17:39:09,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:39:09,921 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:39:09,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 17:39:09,921 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:39:09,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:39:09,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1366496492, now seen corresponding path program 1 times [2020-10-27 17:39:09,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:39:09,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385830820] [2020-10-27 17:39:09,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:39:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:10,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:10,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:10,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:10,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:12,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:13,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:13,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-27 17:39:13,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:39:13,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3982 [2020-10-27 17:39:13,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:13,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:13,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-27 17:39:13,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 17:39:13,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:14,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:39:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:14,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:14,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:14,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:39:14,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:14,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:39:14,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:14,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:14,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:14,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:14,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:14,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:39:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:14,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:14,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:14,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:39:14,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:14,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 17:39:14,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:14,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:14,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 17:39:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:14,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:14,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:14,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 17:39:14,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:14,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-27 17:39:14,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:14,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:39:14,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:14,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 17:39:14,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:39:14,564 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-27 17:39:14,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385830820] [2020-10-27 17:39:14,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:39:14,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:39:14,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983952858] [2020-10-27 17:39:14,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:39:14,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:39:14,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:39:14,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:39:14,571 INFO L87 Difference]: Start difference. First operand 16308 states and 21463 transitions. Second operand 5 states. [2020-10-27 17:39:16,344 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-27 17:39:23,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:39:23,756 INFO L93 Difference]: Finished difference Result 32633 states and 43027 transitions. [2020-10-27 17:39:23,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:39:23,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 252 [2020-10-27 17:39:23,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:39:23,817 INFO L225 Difference]: With dead ends: 32633 [2020-10-27 17:39:23,817 INFO L226 Difference]: Without dead ends: 16320 [2020-10-27 17:39:23,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:39:23,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16320 states. [2020-10-27 17:39:24,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16320 to 16308. [2020-10-27 17:39:24,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16308 states. [2020-10-27 17:39:24,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16308 states to 16308 states and 21459 transitions. [2020-10-27 17:39:24,232 INFO L78 Accepts]: Start accepts. Automaton has 16308 states and 21459 transitions. Word has length 252 [2020-10-27 17:39:24,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:39:24,233 INFO L481 AbstractCegarLoop]: Abstraction has 16308 states and 21459 transitions. [2020-10-27 17:39:24,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:39:24,233 INFO L276 IsEmpty]: Start isEmpty. Operand 16308 states and 21459 transitions. [2020-10-27 17:39:24,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-27 17:39:24,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:39:24,247 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:39:24,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 17:39:24,247 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:39:24,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:39:24,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1059016506, now seen corresponding path program 1 times [2020-10-27 17:39:24,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:39:24,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270618274] [2020-10-27 17:39:24,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:39:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:24,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:24,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:25,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:26,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:27,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:27,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-27 17:39:27,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:39:27,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2844 [2020-10-27 17:39:27,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:27,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:27,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 225 [2020-10-27 17:39:27,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 17:39:27,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:39:27,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:39:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:27,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:27,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:27,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:39:27,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:27,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:39:27,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:27,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:27,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:27,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:39:27,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:39:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:27,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:27,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:27,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 17:39:27,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:27,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-27 17:39:27,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:27,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:39:27,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:27,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-27 17:39:27,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:27,901 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:39:27,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270618274] [2020-10-27 17:39:27,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:39:27,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:39:27,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486921400] [2020-10-27 17:39:27,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:39:27,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:39:27,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:39:27,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:39:27,905 INFO L87 Difference]: Start difference. First operand 16308 states and 21459 transitions. Second operand 5 states. [2020-10-27 17:39:41,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:39:41,573 INFO L93 Difference]: Finished difference Result 40372 states and 55215 transitions. [2020-10-27 17:39:41,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:39:41,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 269 [2020-10-27 17:39:41,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:39:41,649 INFO L225 Difference]: With dead ends: 40372 [2020-10-27 17:39:41,649 INFO L226 Difference]: Without dead ends: 24070 [2020-10-27 17:39:41,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:39:41,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24070 states. [2020-10-27 17:39:42,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24070 to 23283. [2020-10-27 17:39:42,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23283 states. [2020-10-27 17:39:42,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23283 states to 23283 states and 31276 transitions. [2020-10-27 17:39:42,200 INFO L78 Accepts]: Start accepts. Automaton has 23283 states and 31276 transitions. Word has length 269 [2020-10-27 17:39:42,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:39:42,201 INFO L481 AbstractCegarLoop]: Abstraction has 23283 states and 31276 transitions. [2020-10-27 17:39:42,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:39:42,201 INFO L276 IsEmpty]: Start isEmpty. Operand 23283 states and 31276 transitions. [2020-10-27 17:39:42,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-27 17:39:42,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:39:42,221 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:39:42,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 17:39:42,221 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:39:42,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:39:42,222 INFO L82 PathProgramCache]: Analyzing trace with hash -576707908, now seen corresponding path program 1 times [2020-10-27 17:39:42,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:39:42,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365130131] [2020-10-27 17:39:42,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:39:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:42,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:43,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:43,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-27 17:39:43,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:43,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 870 [2020-10-27 17:39:43,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:43,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:39:43,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:39:43,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 17:39:43,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:43,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:39:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:43,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:43,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:43,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:39:43,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:43,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 17:39:43,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:39:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:39:43,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:43,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:39:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:43,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:43,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:43,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-27 17:39:43,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:43,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 497 [2020-10-27 17:39:43,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:39:43,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-27 17:39:43,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:45,317 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:39:45,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365130131] [2020-10-27 17:39:45,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:39:45,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 17:39:45,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835081054] [2020-10-27 17:39:45,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:39:45,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:39:45,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:39:45,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:39:45,320 INFO L87 Difference]: Start difference. First operand 23283 states and 31276 transitions. Second operand 7 states. [2020-10-27 17:40:02,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:40:02,656 INFO L93 Difference]: Finished difference Result 59978 states and 82217 transitions. [2020-10-27 17:40:02,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 17:40:02,658 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 322 [2020-10-27 17:40:02,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:40:02,780 INFO L225 Difference]: With dead ends: 59978 [2020-10-27 17:40:02,780 INFO L226 Difference]: Without dead ends: 36701 [2020-10-27 17:40:02,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-27 17:40:02,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36701 states. [2020-10-27 17:40:03,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36701 to 36690. [2020-10-27 17:40:03,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36690 states. [2020-10-27 17:40:03,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36690 states to 36690 states and 48644 transitions. [2020-10-27 17:40:03,592 INFO L78 Accepts]: Start accepts. Automaton has 36690 states and 48644 transitions. Word has length 322 [2020-10-27 17:40:03,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:40:03,593 INFO L481 AbstractCegarLoop]: Abstraction has 36690 states and 48644 transitions. [2020-10-27 17:40:03,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:40:03,594 INFO L276 IsEmpty]: Start isEmpty. Operand 36690 states and 48644 transitions. [2020-10-27 17:40:03,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-10-27 17:40:03,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:40:03,791 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:40:03,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 17:40:03,791 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:40:03,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:40:03,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1614016689, now seen corresponding path program 1 times [2020-10-27 17:40:03,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:40:03,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784096156] [2020-10-27 17:40:03,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:40:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:04,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:04,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:07,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:08,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:08,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 428 [2020-10-27 17:40:08,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:40:08,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4462 [2020-10-27 17:40:08,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:08,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:40:08,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 369 [2020-10-27 17:40:08,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 17:40:08,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:08,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:40:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:08,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:08,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:08,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:40:08,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:08,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:40:08,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:08,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:08,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:08,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:08,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:08,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:40:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:08,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:09,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:09,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-27 17:40:09,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:09,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-27 17:40:09,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:09,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:40:09,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:09,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 354 [2020-10-27 17:40:09,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 17:40:09,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:40:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:09,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:09,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:09,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 17:40:09,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:09,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 17:40:09,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:09,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:40:09,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:09,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 17:40:09,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:09,799 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:40:09,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784096156] [2020-10-27 17:40:09,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:40:09,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:40:09,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777965232] [2020-10-27 17:40:09,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:40:09,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:40:09,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:40:09,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:40:09,808 INFO L87 Difference]: Start difference. First operand 36690 states and 48644 transitions. Second operand 5 states. [2020-10-27 17:40:27,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:40:27,790 INFO L93 Difference]: Finished difference Result 83508 states and 114546 transitions. [2020-10-27 17:40:27,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:40:27,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 414 [2020-10-27 17:40:27,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:40:27,931 INFO L225 Difference]: With dead ends: 83508 [2020-10-27 17:40:27,931 INFO L226 Difference]: Without dead ends: 46824 [2020-10-27 17:40:27,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:40:28,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46824 states. [2020-10-27 17:40:28,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46824 to 39884. [2020-10-27 17:40:28,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39884 states. [2020-10-27 17:40:29,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39884 states to 39884 states and 52427 transitions. [2020-10-27 17:40:29,048 INFO L78 Accepts]: Start accepts. Automaton has 39884 states and 52427 transitions. Word has length 414 [2020-10-27 17:40:29,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:40:29,049 INFO L481 AbstractCegarLoop]: Abstraction has 39884 states and 52427 transitions. [2020-10-27 17:40:29,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:40:29,050 INFO L276 IsEmpty]: Start isEmpty. Operand 39884 states and 52427 transitions. [2020-10-27 17:40:29,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-10-27 17:40:29,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:40:29,088 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:40:29,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 17:40:29,088 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:40:29,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:40:29,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1289943104, now seen corresponding path program 1 times [2020-10-27 17:40:29,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:40:29,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2147425167] [2020-10-27 17:40:29,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:40:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:29,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:29,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:30,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:31,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:34,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:34,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 486 [2020-10-27 17:40:34,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:40:34,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-27 17:40:34,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:34,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:40:34,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-27 17:40:34,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 271 [2020-10-27 17:40:34,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:34,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:40:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:34,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:34,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:34,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:40:34,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:34,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:40:34,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:34,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:34,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:34,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:34,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:34,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:40:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:34,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:34,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:34,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:40:34,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:34,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 17:40:34,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:34,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:34,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:34,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:34,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:34,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 17:40:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:34,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:34,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:34,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 17:40:34,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:34,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 17:40:34,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:34,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:40:34,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:34,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 17:40:34,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:34,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-27 17:40:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:34,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:34,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:34,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-27 17:40:34,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:34,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-27 17:40:34,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:34,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:40:34,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:40:34,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-27 17:40:34,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 285 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-27 17:40:35,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2147425167] [2020-10-27 17:40:35,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:40:35,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:40:35,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036541720] [2020-10-27 17:40:35,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:40:35,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:40:35,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:40:35,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:40:35,491 INFO L87 Difference]: Start difference. First operand 39884 states and 52427 transitions. Second operand 7 states. [2020-10-27 17:40:36,302 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-27 17:40:36,720 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-27 17:41:05,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:41:05,200 INFO L93 Difference]: Finished difference Result 90374 states and 119001 transitions. [2020-10-27 17:41:05,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 17:41:05,203 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 470 [2020-10-27 17:41:05,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:41:05,365 INFO L225 Difference]: With dead ends: 90374 [2020-10-27 17:41:05,366 INFO L226 Difference]: Without dead ends: 49727 [2020-10-27 17:41:05,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:41:05,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49727 states. [2020-10-27 17:41:06,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49727 to 45766. [2020-10-27 17:41:06,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45766 states. [2020-10-27 17:41:06,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45766 states to 45766 states and 58076 transitions. [2020-10-27 17:41:06,590 INFO L78 Accepts]: Start accepts. Automaton has 45766 states and 58076 transitions. Word has length 470 [2020-10-27 17:41:06,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:41:06,591 INFO L481 AbstractCegarLoop]: Abstraction has 45766 states and 58076 transitions. [2020-10-27 17:41:06,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:41:06,591 INFO L276 IsEmpty]: Start isEmpty. Operand 45766 states and 58076 transitions. [2020-10-27 17:41:06,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-10-27 17:41:06,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:41:06,637 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:41:06,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 17:41:06,638 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:41:06,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:41:06,638 INFO L82 PathProgramCache]: Analyzing trace with hash 439516526, now seen corresponding path program 1 times [2020-10-27 17:41:06,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:41:06,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795229931] [2020-10-27 17:41:06,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:41:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:06,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:06,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:08,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:09,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:09,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 515 [2020-10-27 17:41:09,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:41:09,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3040 [2020-10-27 17:41:09,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:09,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:41:09,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-27 17:41:09,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 271 [2020-10-27 17:41:09,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:09,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:41:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:09,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:09,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:09,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:41:09,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:09,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 17:41:09,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:09,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:41:09,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:09,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:41:09,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:09,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:41:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:09,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:10,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:10,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:41:10,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:10,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 17:41:10,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:10,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:41:10,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:10,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:41:10,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:10,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 17:41:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:10,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:10,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:10,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 17:41:10,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:10,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 17:41:10,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:10,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:41:10,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:10,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 17:41:10,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:10,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-27 17:41:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:10,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:10,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:10,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-27 17:41:10,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:10,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-27 17:41:10,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:41:10,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:41:10,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-27 17:41:10,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:11,266 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-27 17:41:11,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795229931] [2020-10-27 17:41:11,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:41:11,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:41:11,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355143558] [2020-10-27 17:41:11,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:41:11,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:41:11,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:41:11,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:41:11,271 INFO L87 Difference]: Start difference. First operand 45766 states and 58076 transitions. Second operand 7 states. [2020-10-27 17:41:13,397 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 17:41:16,523 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 70