/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/Problem17_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:58:58,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:58:59,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:58:59,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:58:59,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:58:59,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:58:59,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:58:59,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:58:59,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:58:59,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:58:59,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:58:59,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:58:59,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:58:59,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:58:59,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:58:59,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:58:59,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:58:59,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:58:59,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:58:59,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:58:59,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:58:59,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:58:59,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:58:59,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:58:59,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:58:59,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:58:59,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:58:59,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:58:59,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:58:59,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:58:59,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:58:59,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:58:59,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:58:59,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:58:59,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:58:59,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:58:59,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:58:59,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:58:59,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:58:59,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:58:59,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:58:59,123 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 18:58:59,150 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:58:59,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:58:59,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:58:59,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:58:59,152 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:58:59,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:58:59,153 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:58:59,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:58:59,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:58:59,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:58:59,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:58:59,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:58:59,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:58:59,154 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:58:59,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:58:59,154 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:58:59,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:58:59,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:58:59,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:58:59,155 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:58:59,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:58:59,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:58:59,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:58:59,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:58:59,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:58:59,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:58:59,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:58:59,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:58:59,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:58:59,157 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:58:59,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:58:59,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:58:59,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:58:59,582 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:58:59,583 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:58:59,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label43.c [2020-10-27 18:58:59,673 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09a84b798/49a0404a751d45f0bd0bc7e051eae06d/FLAGb1b1eea13 [2020-10-27 18:59:00,534 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:59:00,535 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label43.c [2020-10-27 18:59:00,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09a84b798/49a0404a751d45f0bd0bc7e051eae06d/FLAGb1b1eea13 [2020-10-27 18:59:01,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09a84b798/49a0404a751d45f0bd0bc7e051eae06d [2020-10-27 18:59:01,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:59:01,113 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:59:01,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:59:01,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:59:01,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:59:01,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:59:01" (1/1) ... [2020-10-27 18:59:01,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d2294d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:59:01, skipping insertion in model container [2020-10-27 18:59:01,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:59:01" (1/1) ... [2020-10-27 18:59:01,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:59:01,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:59:02,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:59:02,302 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:59:02,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:59:02,691 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:59:02,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:59:02 WrapperNode [2020-10-27 18:59:02,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:59:02,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:59:02,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:59:02,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:59:02,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:59:02" (1/1) ... [2020-10-27 18:59:02,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:59:02" (1/1) ... [2020-10-27 18:59:02,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:59:02" (1/1) ... [2020-10-27 18:59:02,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:59:02" (1/1) ... [2020-10-27 18:59:02,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:59:02" (1/1) ... [2020-10-27 18:59:02,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:59:02" (1/1) ... [2020-10-27 18:59:03,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:59:02" (1/1) ... [2020-10-27 18:59:03,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:59:03,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:59:03,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:59:03,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:59:03,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:59:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:59:03,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:59:03,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:59:03,140 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:59:03,140 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:59:03,140 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:59:03,140 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:59:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:59:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:59:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:59:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:59:03,142 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:59:03,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:59:03,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:59:03,143 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:59:03,143 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:59:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:59:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:59:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:59:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:59:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:59:03,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:59:14,578 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:59:14,579 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:59:14,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:59:14 BoogieIcfgContainer [2020-10-27 18:59:14,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:59:14,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:59:14,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:59:14,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:59:14,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:59:01" (1/3) ... [2020-10-27 18:59:14,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624db208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:59:14, skipping insertion in model container [2020-10-27 18:59:14,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:59:02" (2/3) ... [2020-10-27 18:59:14,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624db208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:59:14, skipping insertion in model container [2020-10-27 18:59:14,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:59:14" (3/3) ... [2020-10-27 18:59:14,594 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label43.c [2020-10-27 18:59:14,609 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:59:14,617 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:59:14,632 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:59:14,682 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:59:14,683 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:59:14,683 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:59:14,683 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:59:14,683 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:59:14,683 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:59:14,684 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:59:14,684 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:59:14,730 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-27 18:59:14,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 18:59:14,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:59:14,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:59:14,748 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:59:14,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:59:14,766 INFO L82 PathProgramCache]: Analyzing trace with hash 948825059, now seen corresponding path program 1 times [2020-10-27 18:59:14,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:59:14,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119329498] [2020-10-27 18:59:14,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:59:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:59:15,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:59:15,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:59:15,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 18:59:15,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:59:15,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-10-27 18:59:15,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:59:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:59:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:59:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 18:59:15,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:59:15,964 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 18:59:15,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:59:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:59:15,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:59:16,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:59:16,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:59:16,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:59:16,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 18:59:16,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:59:16,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:59:16,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:59:16,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:59:16,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:59:16,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:59:16,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119329498] [2020-10-27 18:59:16,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:59:16,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 18:59:16,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079898542] [2020-10-27 18:59:16,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 18:59:16,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:59:16,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 18:59:16,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 18:59:16,087 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-27 18:59:29,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:59:29,209 INFO L93 Difference]: Finished difference Result 1734 states and 3143 transitions. [2020-10-27 18:59:29,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:59:29,212 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-27 18:59:29,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:59:29,247 INFO L225 Difference]: With dead ends: 1734 [2020-10-27 18:59:29,247 INFO L226 Difference]: Without dead ends: 1048 [2020-10-27 18:59:29,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:59:29,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-10-27 18:59:29,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1029. [2020-10-27 18:59:29,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1029 states. [2020-10-27 18:59:29,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1764 transitions. [2020-10-27 18:59:29,396 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1764 transitions. Word has length 69 [2020-10-27 18:59:29,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:59:29,398 INFO L481 AbstractCegarLoop]: Abstraction has 1029 states and 1764 transitions. [2020-10-27 18:59:29,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 18:59:29,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1764 transitions. [2020-10-27 18:59:29,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-27 18:59:29,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:59:29,412 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, 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] [2020-10-27 18:59:29,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:59:29,413 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:59:29,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:59:29,415 INFO L82 PathProgramCache]: Analyzing trace with hash 219697502, now seen corresponding path program 1 times [2020-10-27 18:59:29,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:59:29,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801292558] [2020-10-27 18:59:29,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:59:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:59:29,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:59:30,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:59:31,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:59:31,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 18:59:31,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:59:31,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1725 [2020-10-27 18:59:31,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:59:31,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:59:31,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 18:59:31,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 18:59:31,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:59:31,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:59:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:59:31,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:59:31,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:59:31,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:59:31,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:59:31,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:59:31,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:59:31,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:59:31,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:59:31,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:59:31,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:59:31,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:59:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:59:31,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:59:31,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:59:31,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 18:59:31,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:59:31,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-27 18:59:31,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:59:31,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:59:31,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:59:31,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 18:59:31,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:59:31,664 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:59:31,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801292558] [2020-10-27 18:59:31,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:59:31,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:59:31,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235614895] [2020-10-27 18:59:31,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:59:31,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:59:31,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:59:31,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:59:31,671 INFO L87 Difference]: Start difference. First operand 1029 states and 1764 transitions. Second operand 6 states. [2020-10-27 18:59:48,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:59:48,684 INFO L93 Difference]: Finished difference Result 2940 states and 5135 transitions. [2020-10-27 18:59:48,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:59:48,685 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-10-27 18:59:48,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:59:48,701 INFO L225 Difference]: With dead ends: 2940 [2020-10-27 18:59:48,701 INFO L226 Difference]: Without dead ends: 1917 [2020-10-27 18:59:48,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:59:48,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2020-10-27 18:59:48,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1909. [2020-10-27 18:59:48,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1909 states. [2020-10-27 18:59:48,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 3322 transitions. [2020-10-27 18:59:48,802 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 3322 transitions. Word has length 138 [2020-10-27 18:59:48,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:59:48,803 INFO L481 AbstractCegarLoop]: Abstraction has 1909 states and 3322 transitions. [2020-10-27 18:59:48,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:59:48,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 3322 transitions. [2020-10-27 18:59:48,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 18:59:48,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:59:48,812 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, 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] [2020-10-27 18:59:48,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:59:48,812 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:59:48,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:59:48,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1440148098, now seen corresponding path program 1 times [2020-10-27 18:59:48,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:59:48,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415698636] [2020-10-27 18:59:48,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:59:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:59:48,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:59:49,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:59:49,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:59:51,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:59:51,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:59:51,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 18:59:51,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:59:51,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2622 [2020-10-27 18:59:51,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:59:51,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:59:51,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 18:59:51,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 18:59:51,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:59:51,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:59:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:59:51,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:59:51,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:59:51,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:59:51,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:59:51,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:59:51,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:59:51,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:59:51,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:59:51,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:59:51,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:59:51,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:59:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:59:51,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:59:52,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:59:52,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:59:52,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:59:52,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 18:59:52,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:59:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:59:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:59:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 18:59:52,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:59:52,193 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:59:52,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415698636] [2020-10-27 18:59:52,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:59:52,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:59:52,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56333991] [2020-10-27 18:59:52,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:59:52,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:59:52,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:59:52,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:59:52,197 INFO L87 Difference]: Start difference. First operand 1909 states and 3322 transitions. Second operand 8 states. [2020-10-27 18:59:55,904 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-27 18:59:56,238 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-27 18:59:56,705 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-27 18:59:57,266 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-27 19:00:05,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:00:05,297 INFO L93 Difference]: Finished difference Result 3974 states and 6853 transitions. [2020-10-27 19:00:05,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 19:00:05,306 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2020-10-27 19:00:05,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:00:05,322 INFO L225 Difference]: With dead ends: 3974 [2020-10-27 19:00:05,322 INFO L226 Difference]: Without dead ends: 1917 [2020-10-27 19:00:05,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-10-27 19:00:05,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2020-10-27 19:00:05,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1909. [2020-10-27 19:00:05,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1909 states. [2020-10-27 19:00:05,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 3112 transitions. [2020-10-27 19:00:05,406 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 3112 transitions. Word has length 140 [2020-10-27 19:00:05,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:00:05,408 INFO L481 AbstractCegarLoop]: Abstraction has 1909 states and 3112 transitions. [2020-10-27 19:00:05,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 19:00:05,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 3112 transitions. [2020-10-27 19:00:05,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-27 19:00:05,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:00:05,417 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, 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] [2020-10-27 19:00:05,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:00:05,418 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:00:05,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:00:05,418 INFO L82 PathProgramCache]: Analyzing trace with hash -517086857, now seen corresponding path program 1 times [2020-10-27 19:00:05,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:00:05,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535505905] [2020-10-27 19:00:05,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:00:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:00:05,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:05,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:06,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:10,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:00:10,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 19:00:10,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:00:10,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4540 [2020-10-27 19:00:10,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:00:10,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:00:10,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-27 19:00:10,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 19:00:10,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:00:10,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:00:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:00:10,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:10,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:00:10,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:00:10,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:00:10,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 19:00:10,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:00:10,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:00:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:00:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:00:10,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:00:10,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:00:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:00:10,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:10,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:00:10,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 19:00:10,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:00:10,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 19:00:10,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:00:10,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:00:10,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:00:10,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 19:00:10,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:00:10,340 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:00:10,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535505905] [2020-10-27 19:00:10,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:00:10,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:00:10,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067960895] [2020-10-27 19:00:10,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:00:10,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:00:10,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:00:10,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:00:10,355 INFO L87 Difference]: Start difference. First operand 1909 states and 3112 transitions. Second operand 5 states. [2020-10-27 19:00:24,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:00:24,726 INFO L93 Difference]: Finished difference Result 5582 states and 9265 transitions. [2020-10-27 19:00:24,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:00:24,727 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-27 19:00:24,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:00:24,748 INFO L225 Difference]: With dead ends: 5582 [2020-10-27 19:00:24,748 INFO L226 Difference]: Without dead ends: 3679 [2020-10-27 19:00:24,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:00:24,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3679 states. [2020-10-27 19:00:24,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3679 to 3668. [2020-10-27 19:00:24,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3668 states. [2020-10-27 19:00:24,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 5346 transitions. [2020-10-27 19:00:24,889 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 5346 transitions. Word has length 143 [2020-10-27 19:00:24,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:00:24,890 INFO L481 AbstractCegarLoop]: Abstraction has 3668 states and 5346 transitions. [2020-10-27 19:00:24,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:00:24,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 5346 transitions. [2020-10-27 19:00:24,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-27 19:00:24,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:00:24,893 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, 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] [2020-10-27 19:00:24,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:00:24,894 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:00:24,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:00:24,894 INFO L82 PathProgramCache]: Analyzing trace with hash -562152741, now seen corresponding path program 1 times [2020-10-27 19:00:24,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:00:24,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307823904] [2020-10-27 19:00:24,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:00:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:00:24,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:25,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:25,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:27,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:00:27,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-27 19:00:27,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:00:27,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2473 [2020-10-27 19:00:27,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:00:27,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:00:27,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 19:00:27,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 19:00:27,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:00:27,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:00:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:00:27,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:27,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:00:27,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:00:27,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:00:27,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:00:27,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:00:27,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:00:27,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:00:27,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:00:27,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:00:27,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:00:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:00:27,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:27,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:00:27,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 19:00:27,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:00:27,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 19:00:27,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:00:27,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:00:27,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:00:27,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 19:00:27,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:00:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:00:27,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307823904] [2020-10-27 19:00:27,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:00:27,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:00:27,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642380350] [2020-10-27 19:00:27,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:00:27,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:00:27,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:00:27,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:00:27,722 INFO L87 Difference]: Start difference. First operand 3668 states and 5346 transitions. Second operand 5 states. [2020-10-27 19:00:40,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:00:40,413 INFO L93 Difference]: Finished difference Result 10847 states and 16086 transitions. [2020-10-27 19:00:40,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:00:40,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-27 19:00:40,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:00:40,451 INFO L225 Difference]: With dead ends: 10847 [2020-10-27 19:00:40,451 INFO L226 Difference]: Without dead ends: 7185 [2020-10-27 19:00:40,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:00:40,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7185 states. [2020-10-27 19:00:40,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7185 to 5444. [2020-10-27 19:00:40,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5444 states. [2020-10-27 19:00:40,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5444 states to 5444 states and 7436 transitions. [2020-10-27 19:00:40,666 INFO L78 Accepts]: Start accepts. Automaton has 5444 states and 7436 transitions. Word has length 145 [2020-10-27 19:00:40,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:00:40,666 INFO L481 AbstractCegarLoop]: Abstraction has 5444 states and 7436 transitions. [2020-10-27 19:00:40,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:00:40,666 INFO L276 IsEmpty]: Start isEmpty. Operand 5444 states and 7436 transitions. [2020-10-27 19:00:40,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-27 19:00:40,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:00:40,670 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, 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] [2020-10-27 19:00:40,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:00:40,671 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:00:40,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:00:40,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1504279178, now seen corresponding path program 1 times [2020-10-27 19:00:40,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:00:40,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268103752] [2020-10-27 19:00:40,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:00:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:00:40,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:40,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:41,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:41,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:45,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:00:45,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-27 19:00:45,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:00:45,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4826 [2020-10-27 19:00:45,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:00:45,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:00:45,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-27 19:00:45,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 19:00:45,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:00:45,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:00:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:00:45,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:45,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:00:45,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:00:45,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:00:45,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:00:45,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:00:45,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:00:45,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:00:45,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:00:45,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:00:45,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:00:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:00:45,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:45,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:00:45,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 19:00:45,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:00:45,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 19:00:45,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:00:45,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:00:45,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:00:45,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 19:00:45,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:00:45,919 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:00:45,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268103752] [2020-10-27 19:00:45,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:00:45,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:00:45,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404679618] [2020-10-27 19:00:45,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:00:45,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:00:45,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:00:45,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:00:45,923 INFO L87 Difference]: Start difference. First operand 5444 states and 7436 transitions. Second operand 5 states. [2020-10-27 19:01:05,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:01:05,015 INFO L93 Difference]: Finished difference Result 13559 states and 19269 transitions. [2020-10-27 19:01:05,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:01:05,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-27 19:01:05,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:01:05,063 INFO L225 Difference]: With dead ends: 13559 [2020-10-27 19:01:05,064 INFO L226 Difference]: Without dead ends: 8121 [2020-10-27 19:01:05,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:01:05,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8121 states. [2020-10-27 19:01:05,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8121 to 7233. [2020-10-27 19:01:05,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7233 states. [2020-10-27 19:01:05,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7233 states to 7233 states and 9979 transitions. [2020-10-27 19:01:05,332 INFO L78 Accepts]: Start accepts. Automaton has 7233 states and 9979 transitions. Word has length 155 [2020-10-27 19:01:05,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:01:05,332 INFO L481 AbstractCegarLoop]: Abstraction has 7233 states and 9979 transitions. [2020-10-27 19:01:05,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:01:05,333 INFO L276 IsEmpty]: Start isEmpty. Operand 7233 states and 9979 transitions. [2020-10-27 19:01:05,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 19:01:05,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:01:05,337 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:01:05,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:01:05,337 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:01:05,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:01:05,338 INFO L82 PathProgramCache]: Analyzing trace with hash -834622982, now seen corresponding path program 1 times [2020-10-27 19:01:05,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:01:05,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707552195] [2020-10-27 19:01:05,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:01:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:05,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:05,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:06,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:06,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:06,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:01:06,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 19:01:06,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:01:06,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1551 [2020-10-27 19:01:06,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:01:06,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:01:06,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 19:01:06,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 19:01:06,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:01:07,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:01:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:07,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:07,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:01:07,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:01:07,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:01:07,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:01:07,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:01:07,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:01:07,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:01:07,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:01:07,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:01:07,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:01:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:07,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:07,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:01:07,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 19:01:07,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:01:07,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 19:01:07,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:01:07,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:01:07,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:01:07,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 19:01:07,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:01:07,521 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:01:07,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707552195] [2020-10-27 19:01:07,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:01:07,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:01:07,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165276979] [2020-10-27 19:01:07,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:01:07,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:01:07,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:01:07,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:01:07,525 INFO L87 Difference]: Start difference. First operand 7233 states and 9979 transitions. Second operand 5 states. [2020-10-27 19:01:08,570 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-27 19:01:17,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:01:17,906 INFO L93 Difference]: Finished difference Result 14516 states and 20097 transitions. [2020-10-27 19:01:17,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:01:17,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-27 19:01:17,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:01:17,937 INFO L225 Difference]: With dead ends: 14516 [2020-10-27 19:01:17,937 INFO L226 Difference]: Without dead ends: 7241 [2020-10-27 19:01:17,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 19:01:17,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7241 states. [2020-10-27 19:01:18,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7241 to 7233. [2020-10-27 19:01:18,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7233 states. [2020-10-27 19:01:18,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7233 states to 7233 states and 9973 transitions. [2020-10-27 19:01:18,125 INFO L78 Accepts]: Start accepts. Automaton has 7233 states and 9973 transitions. Word has length 157 [2020-10-27 19:01:18,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:01:18,125 INFO L481 AbstractCegarLoop]: Abstraction has 7233 states and 9973 transitions. [2020-10-27 19:01:18,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:01:18,126 INFO L276 IsEmpty]: Start isEmpty. Operand 7233 states and 9973 transitions. [2020-10-27 19:01:18,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-27 19:01:18,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:01:18,136 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:01:18,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 19:01:18,136 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:01:18,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:01:18,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1486441431, now seen corresponding path program 1 times [2020-10-27 19:01:18,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:01:18,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281300671] [2020-10-27 19:01:18,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:01:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:18,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:18,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:18,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:18,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:21,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:01:21,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 19:01:21,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:01:21,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3160 [2020-10-27 19:01:21,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:01:21,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:01:21,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 19:01:21,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 19:01:21,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:01:21,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:01:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:21,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:21,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:01:21,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:01:21,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:01:21,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:01:21,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:01:21,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:01:21,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:01:21,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:01:21,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:01:21,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:01:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:21,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:21,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:01:21,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 19:01:21,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:01:21,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 19:01:21,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:01:21,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:01:21,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:01:21,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 19:01:21,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:01:21,694 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:01:21,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281300671] [2020-10-27 19:01:21,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:01:21,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:01:21,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615708838] [2020-10-27 19:01:21,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:01:21,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:01:21,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:01:21,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:01:21,698 INFO L87 Difference]: Start difference. First operand 7233 states and 9973 transitions. Second operand 5 states. [2020-10-27 19:01:36,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:01:36,740 INFO L93 Difference]: Finished difference Result 18415 states and 26497 transitions. [2020-10-27 19:01:36,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:01:36,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-27 19:01:36,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:01:36,782 INFO L225 Difference]: With dead ends: 18415 [2020-10-27 19:01:36,782 INFO L226 Difference]: Without dead ends: 11188 [2020-10-27 19:01:36,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:01:36,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11188 states. [2020-10-27 19:01:37,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11188 to 9881. [2020-10-27 19:01:37,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9881 states. [2020-10-27 19:01:37,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9881 states to 9881 states and 13200 transitions. [2020-10-27 19:01:37,112 INFO L78 Accepts]: Start accepts. Automaton has 9881 states and 13200 transitions. Word has length 172 [2020-10-27 19:01:37,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:01:37,112 INFO L481 AbstractCegarLoop]: Abstraction has 9881 states and 13200 transitions. [2020-10-27 19:01:37,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:01:37,112 INFO L276 IsEmpty]: Start isEmpty. Operand 9881 states and 13200 transitions. [2020-10-27 19:01:37,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-27 19:01:37,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:01:37,126 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:01:37,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 19:01:37,126 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:01:37,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:01:37,127 INFO L82 PathProgramCache]: Analyzing trace with hash 182930571, now seen corresponding path program 1 times [2020-10-27 19:01:37,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:01:37,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796584902] [2020-10-27 19:01:37,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:01:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:37,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:37,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:37,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:38,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:40,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:42,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:01:42,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-27 19:01:42,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 19:01:42,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 19:01:42,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:01:42,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:01:42,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 179 [2020-10-27 19:01:42,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 19:01:42,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:01:42,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:01:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:42,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:42,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:01:42,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:01:42,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:01:42,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:01:42,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:01:42,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:01:42,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:01:42,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:01:42,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:01:42,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:01:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:42,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:42,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:01:42,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 19:01:42,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:01:42,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 19:01:42,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:01:42,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:01:42,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:01:42,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:01:42,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:01:42,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 19:01:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:42,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:42,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:01:42,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 19:01:42,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:01:42,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 19:01:42,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:01:42,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:01:42,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:01:42,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 19:01:42,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:01:42,617 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-27 19:01:42,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796584902] [2020-10-27 19:01:42,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:01:42,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:01:42,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261072554] [2020-10-27 19:01:42,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:01:42,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:01:42,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:01:42,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:01:42,621 INFO L87 Difference]: Start difference. First operand 9881 states and 13200 transitions. Second operand 5 states. [2020-10-27 19:01:58,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:01:58,665 INFO L93 Difference]: Finished difference Result 24141 states and 33882 transitions. [2020-10-27 19:01:58,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:01:58,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 238 [2020-10-27 19:01:58,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:01:58,714 INFO L225 Difference]: With dead ends: 24141 [2020-10-27 19:01:58,715 INFO L226 Difference]: Without dead ends: 14266 [2020-10-27 19:01:58,739 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 19:01:58,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14266 states. [2020-10-27 19:01:59,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14266 to 12954. [2020-10-27 19:01:59,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12954 states. [2020-10-27 19:01:59,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12954 states to 12954 states and 16994 transitions. [2020-10-27 19:01:59,053 INFO L78 Accepts]: Start accepts. Automaton has 12954 states and 16994 transitions. Word has length 238 [2020-10-27 19:01:59,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:01:59,054 INFO L481 AbstractCegarLoop]: Abstraction has 12954 states and 16994 transitions. [2020-10-27 19:01:59,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:01:59,054 INFO L276 IsEmpty]: Start isEmpty. Operand 12954 states and 16994 transitions. [2020-10-27 19:01:59,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-27 19:01:59,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:01:59,071 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:01:59,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 19:01:59,072 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:01:59,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:01:59,073 INFO L82 PathProgramCache]: Analyzing trace with hash -282495523, now seen corresponding path program 1 times [2020-10-27 19:01:59,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:01:59,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52335857] [2020-10-27 19:01:59,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:01:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:59,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:59,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:59,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:00,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:02,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:03,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:04,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:02:04,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-27 19:02:04,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 19:02:04,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 19:02:04,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:02:04,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:02:04,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 245 [2020-10-27 19:02:04,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:02:04,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:02:04,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:02:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:02:04,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:04,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:02:04,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:02:04,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:02:04,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:02:04,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:02:04,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:02:04,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:02:04,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:02:04,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:02:04,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:02:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:02:04,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:04,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:02:04,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 19:02:04,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:02:04,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 19:02:04,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:02:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:02:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:02:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:02:04,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:02:04,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 19:02:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:02:04,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:04,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:02:04,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 19:02:04,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:02:04,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 19:02:04,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:02:04,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:02:04,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 19:02:04,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:02:04,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:02:04,528 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-27 19:02:04,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52335857] [2020-10-27 19:02:04,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:02:04,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 19:02:04,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280197784] [2020-10-27 19:02:04,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:02:04,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:02:04,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:02:04,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:02:04,530 INFO L87 Difference]: Start difference. First operand 12954 states and 16994 transitions. Second operand 5 states. [2020-10-27 19:02:23,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:02:23,386 INFO L93 Difference]: Finished difference Result 33368 states and 45325 transitions. [2020-10-27 19:02:23,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:02:23,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 304 [2020-10-27 19:02:23,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:02:23,461 INFO L225 Difference]: With dead ends: 33368 [2020-10-27 19:02:23,461 INFO L226 Difference]: Without dead ends: 20420 [2020-10-27 19:02:23,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:02:23,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20420 states. [2020-10-27 19:02:23,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20420 to 18234. [2020-10-27 19:02:23,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18234 states. [2020-10-27 19:02:23,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18234 states to 18234 states and 23336 transitions. [2020-10-27 19:02:23,966 INFO L78 Accepts]: Start accepts. Automaton has 18234 states and 23336 transitions. Word has length 304 [2020-10-27 19:02:23,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:02:23,967 INFO L481 AbstractCegarLoop]: Abstraction has 18234 states and 23336 transitions. [2020-10-27 19:02:23,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:02:23,967 INFO L276 IsEmpty]: Start isEmpty. Operand 18234 states and 23336 transitions. [2020-10-27 19:02:23,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-27 19:02:23,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:02:23,998 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:02:23,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 19:02:23,998 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:02:23,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:02:23,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1272429338, now seen corresponding path program 1 times [2020-10-27 19:02:23,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:02:23,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570176816] [2020-10-27 19:02:24,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:02:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:02:24,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:24,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:25,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:26,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:29,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:29,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:02:29,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-27 19:02:29,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 19:02:29,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 19:02:29,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:02:29,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:02:29,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 312 [2020-10-27 19:02:29,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 19:02:29,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:02:29,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:02:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:02:29,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:29,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:02:29,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:02:29,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:02:29,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:02:29,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:02:29,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:02:29,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:02:29,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:02:29,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:02:29,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:02:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:02:29,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:29,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:02:29,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 19:02:29,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:02:29,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 19:02:29,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:02:29,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:02:29,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:02:29,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:02:29,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:02:29,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 19:02:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:02:29,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:29,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:02:29,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 19:02:29,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:02:29,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-27 19:02:29,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:02:29,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:02:29,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:02:29,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-27 19:02:29,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:02:29,852 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-27 19:02:29,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570176816] [2020-10-27 19:02:29,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:02:29,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 19:02:29,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518369640] [2020-10-27 19:02:29,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:02:29,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:02:29,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:02:29,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:02:29,855 INFO L87 Difference]: Start difference. First operand 18234 states and 23336 transitions. Second operand 6 states.