/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/Problem03_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 15:43:03,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 15:43:03,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 15:43:03,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 15:43:03,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 15:43:03,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 15:43:03,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 15:43:03,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 15:43:03,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 15:43:03,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 15:43:03,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 15:43:03,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 15:43:03,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 15:43:03,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 15:43:03,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 15:43:03,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 15:43:03,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 15:43:03,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 15:43:03,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 15:43:03,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 15:43:03,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 15:43:03,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 15:43:03,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 15:43:03,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 15:43:03,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 15:43:03,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 15:43:03,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 15:43:03,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 15:43:03,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 15:43:03,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 15:43:03,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 15:43:03,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 15:43:03,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 15:43:03,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 15:43:03,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 15:43:03,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 15:43:03,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 15:43:03,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 15:43:03,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 15:43:03,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 15:43:03,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 15:43:03,825 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 15:43:03,877 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 15:43:03,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 15:43:03,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 15:43:03,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 15:43:03,882 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 15:43:03,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 15:43:03,883 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 15:43:03,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 15:43:03,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 15:43:03,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 15:43:03,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 15:43:03,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 15:43:03,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 15:43:03,885 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 15:43:03,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 15:43:03,886 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 15:43:03,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 15:43:03,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 15:43:03,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 15:43:03,887 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 15:43:03,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 15:43:03,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:43:03,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 15:43:03,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 15:43:03,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 15:43:03,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 15:43:03,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 15:43:03,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 15:43:03,889 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 15:43:03,889 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 15:43:04,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 15:43:04,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 15:43:04,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 15:43:04,382 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 15:43:04,383 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 15:43:04,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label20.c [2020-10-27 15:43:04,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a68d5a471/e77e15dd00be4e5abc8e9880f7b6e4c4/FLAGda2e6e262 [2020-10-27 15:43:05,252 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 15:43:05,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label20.c [2020-10-27 15:43:05,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a68d5a471/e77e15dd00be4e5abc8e9880f7b6e4c4/FLAGda2e6e262 [2020-10-27 15:43:05,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a68d5a471/e77e15dd00be4e5abc8e9880f7b6e4c4 [2020-10-27 15:43:05,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 15:43:05,428 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 15:43:05,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 15:43:05,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 15:43:05,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 15:43:05,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:43:05" (1/1) ... [2020-10-27 15:43:05,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434b4690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:05, skipping insertion in model container [2020-10-27 15:43:05,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:43:05" (1/1) ... [2020-10-27 15:43:05,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 15:43:05,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 15:43:06,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:43:06,226 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 15:43:06,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:43:06,540 INFO L208 MainTranslator]: Completed translation [2020-10-27 15:43:06,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:06 WrapperNode [2020-10-27 15:43:06,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 15:43:06,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 15:43:06,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 15:43:06,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 15:43:06,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:06" (1/1) ... [2020-10-27 15:43:06,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:06" (1/1) ... [2020-10-27 15:43:06,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:06" (1/1) ... [2020-10-27 15:43:06,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:06" (1/1) ... [2020-10-27 15:43:06,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:06" (1/1) ... [2020-10-27 15:43:06,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:06" (1/1) ... [2020-10-27 15:43:06,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:06" (1/1) ... [2020-10-27 15:43:06,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 15:43:06,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 15:43:06,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 15:43:06,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 15:43:06,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:06" (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 15:43:06,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 15:43:06,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 15:43:06,823 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 15:43:06,823 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 15:43:06,824 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 15:43:06,824 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 15:43:06,825 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 15:43:06,825 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 15:43:06,825 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 15:43:06,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 15:43:06,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 15:43:06,827 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 15:43:06,827 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 15:43:06,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 15:43:06,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 15:43:06,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 15:43:06,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 15:43:06,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 15:43:06,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 15:43:09,101 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 15:43:09,101 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 15:43:09,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:43:09 BoogieIcfgContainer [2020-10-27 15:43:09,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 15:43:09,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 15:43:09,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 15:43:09,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 15:43:09,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:43:05" (1/3) ... [2020-10-27 15:43:09,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744e672f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:43:09, skipping insertion in model container [2020-10-27 15:43:09,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:43:06" (2/3) ... [2020-10-27 15:43:09,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744e672f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:43:09, skipping insertion in model container [2020-10-27 15:43:09,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:43:09" (3/3) ... [2020-10-27 15:43:09,113 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label20.c [2020-10-27 15:43:09,126 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 15:43:09,131 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 15:43:09,145 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 15:43:09,176 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 15:43:09,176 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 15:43:09,177 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 15:43:09,177 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 15:43:09,177 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 15:43:09,177 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 15:43:09,177 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 15:43:09,177 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 15:43:09,204 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-27 15:43:09,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-27 15:43:09,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:43:09,225 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:43:09,225 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:43:09,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:43:09,233 INFO L82 PathProgramCache]: Analyzing trace with hash -703080968, now seen corresponding path program 1 times [2020-10-27 15:43:09,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:43:09,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339113357] [2020-10-27 15:43:09,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:43:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:09,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:10,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:13,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:13,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-27 15:43:13,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:43:13,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3796 [2020-10-27 15:43:13,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 15:43:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:43:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 15:43:13,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 15:43:14,599 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-27 15:43:14,941 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2020-10-27 15:43:15,264 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2020-10-27 15:43:15,632 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 76 [2020-10-27 15:43:15,898 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 74 [2020-10-27 15:43:16,166 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-10-27 15:43:16,370 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2020-10-27 15:43:16,596 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2020-10-27 15:43:16,777 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2020-10-27 15:43:17,088 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:43:17,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:43:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:17,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:17,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:17,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:43:17,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:17,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 15:43:17,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:17,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:43:17,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:17,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:43:17,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:18,336 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 15:43:18,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339113357] [2020-10-27 15:43:18,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:43:18,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 15:43:18,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949894211] [2020-10-27 15:43:18,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 15:43:18,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:43:18,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 15:43:18,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:43:18,364 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 12 states. [2020-10-27 15:43:18,961 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 15:43:20,090 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 208 DAG size of output: 208 [2020-10-27 15:43:21,180 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 208 DAG size of output: 208 [2020-10-27 15:43:22,328 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 228 DAG size of output: 228 [2020-10-27 15:43:24,197 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 241 DAG size of output: 225 [2020-10-27 15:43:26,298 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 241 DAG size of output: 222 [2020-10-27 15:43:28,592 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 245 DAG size of output: 219 [2020-10-27 15:43:32,904 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 246 DAG size of output: 216 [2020-10-27 15:43:34,842 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 248 DAG size of output: 212 [2020-10-27 15:43:38,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:43:38,191 INFO L93 Difference]: Finished difference Result 742 states and 1293 transitions. [2020-10-27 15:43:38,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 15:43:38,193 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 202 [2020-10-27 15:43:38,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:43:38,211 INFO L225 Difference]: With dead ends: 742 [2020-10-27 15:43:38,211 INFO L226 Difference]: Without dead ends: 365 [2020-10-27 15:43:38,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-27 15:43:38,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-27 15:43:38,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2020-10-27 15:43:38,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-27 15:43:38,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 526 transitions. [2020-10-27 15:43:38,304 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 526 transitions. Word has length 202 [2020-10-27 15:43:38,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:43:38,305 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 526 transitions. [2020-10-27 15:43:38,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 15:43:38,305 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 526 transitions. [2020-10-27 15:43:38,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-27 15:43:38,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:43:38,311 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:43:38,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 15:43:38,312 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:43:38,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:43:38,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1119319899, now seen corresponding path program 1 times [2020-10-27 15:43:38,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:43:38,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489651528] [2020-10-27 15:43:38,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:43:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:38,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:38,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:40,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:43,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:43,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-27 15:43:43,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:43:43,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-27 15:43:43,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:43,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:43:43,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 15:43:43,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-27 15:43:43,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:43,994 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:43:43,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:43:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:44,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:44,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:44,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:43:44,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:44,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 15:43:44,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:44,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:43:44,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:44,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:43:44,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:44,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:43:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:44,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:44,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:44,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:43:44,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:44,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 15:43:44,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:44,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:43:44,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:44,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:43:44,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:44,261 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:43:44,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489651528] [2020-10-27 15:43:44,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:43:44,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:43:44,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694093429] [2020-10-27 15:43:44,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:43:44,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:43:44,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:43:44,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:43:44,273 INFO L87 Difference]: Start difference. First operand 365 states and 526 transitions. Second operand 5 states. [2020-10-27 15:43:44,622 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:43:47,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:43:47,685 INFO L93 Difference]: Finished difference Result 840 states and 1313 transitions. [2020-10-27 15:43:47,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:43:47,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-27 15:43:47,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:43:47,694 INFO L225 Difference]: With dead ends: 840 [2020-10-27 15:43:47,694 INFO L226 Difference]: Without dead ends: 596 [2020-10-27 15:43:47,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:43:47,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-10-27 15:43:47,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 582. [2020-10-27 15:43:47,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2020-10-27 15:43:47,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 864 transitions. [2020-10-27 15:43:47,758 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 864 transitions. Word has length 213 [2020-10-27 15:43:47,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:43:47,759 INFO L481 AbstractCegarLoop]: Abstraction has 582 states and 864 transitions. [2020-10-27 15:43:47,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:43:47,759 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 864 transitions. [2020-10-27 15:43:47,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-27 15:43:47,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:43:47,766 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:43:47,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 15:43:47,766 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:43:47,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:43:47,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1102074040, now seen corresponding path program 1 times [2020-10-27 15:43:47,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:43:47,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320017548] [2020-10-27 15:43:47,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:43:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:47,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:48,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:48,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:50,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:50,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:52,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:52,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-27 15:43:52,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:43:52,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-27 15:43:52,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:52,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:43:52,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 15:43:52,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-27 15:43:52,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:53,209 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:43:53,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:43:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:53,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:53,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:53,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:43:53,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:53,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 15:43:53,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:53,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:43:53,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:53,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:43:53,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:53,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:43:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:53,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:53,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:53,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:43:53,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:53,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:43:53,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:53,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:43:53,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:53,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:43:53,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:53,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:43:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:53,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:53,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:53,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:43:53,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:53,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 15:43:53,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:53,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:43:53,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:53,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 15:43:53,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:53,502 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 15:43:53,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320017548] [2020-10-27 15:43:53,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:43:53,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:43:53,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048598860] [2020-10-27 15:43:53,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:43:53,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:43:53,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:43:53,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:43:53,505 INFO L87 Difference]: Start difference. First operand 582 states and 864 transitions. Second operand 5 states. [2020-10-27 15:43:53,895 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:43:57,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:43:57,617 INFO L93 Difference]: Finished difference Result 1467 states and 2296 transitions. [2020-10-27 15:43:57,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:43:57,618 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-27 15:43:57,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:43:57,625 INFO L225 Difference]: With dead ends: 1467 [2020-10-27 15:43:57,625 INFO L226 Difference]: Without dead ends: 1006 [2020-10-27 15:43:57,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:43:57,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-10-27 15:43:57,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 1004. [2020-10-27 15:43:57,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1004 states. [2020-10-27 15:43:57,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1495 transitions. [2020-10-27 15:43:57,668 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1495 transitions. Word has length 223 [2020-10-27 15:43:57,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:43:57,669 INFO L481 AbstractCegarLoop]: Abstraction has 1004 states and 1495 transitions. [2020-10-27 15:43:57,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:43:57,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1495 transitions. [2020-10-27 15:43:57,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-27 15:43:57,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:43:57,675 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:43:57,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 15:43:57,675 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:43:57,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:43:57,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1647918767, now seen corresponding path program 1 times [2020-10-27 15:43:57,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:43:57,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597201459] [2020-10-27 15:43:57,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:43:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:57,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:58,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:58,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:58,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-27 15:43:58,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:43:58,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 752 [2020-10-27 15:43:58,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:58,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:43:58,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 15:43:58,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 15:43:58,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:59,075 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:43:59,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:43:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:59,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:59,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:59,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:43:59,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:59,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 15:43:59,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:59,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:43:59,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:59,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:43:59,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:43:59,252 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 15:43:59,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:43:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:43:59,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:43:59,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:43:59,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 15:43:59,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:43:59,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 15:43:59,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:43:59,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:43:59,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:43:59,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 15:43:59,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:43:59,755 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:43:59,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597201459] [2020-10-27 15:43:59,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:43:59,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:43:59,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711870882] [2020-10-27 15:43:59,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:43:59,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:43:59,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:43:59,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:43:59,758 INFO L87 Difference]: Start difference. First operand 1004 states and 1495 transitions. Second operand 5 states. [2020-10-27 15:44:00,267 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 15:44:03,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:03,373 INFO L93 Difference]: Finished difference Result 2065 states and 3186 transitions. [2020-10-27 15:44:03,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:44:03,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-27 15:44:03,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:03,382 INFO L225 Difference]: With dead ends: 2065 [2020-10-27 15:44:03,382 INFO L226 Difference]: Without dead ends: 992 [2020-10-27 15:44:03,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:44:03,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2020-10-27 15:44:03,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 992. [2020-10-27 15:44:03,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 992 states. [2020-10-27 15:44:03,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1405 transitions. [2020-10-27 15:44:03,430 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1405 transitions. Word has length 223 [2020-10-27 15:44:03,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:03,430 INFO L481 AbstractCegarLoop]: Abstraction has 992 states and 1405 transitions. [2020-10-27 15:44:03,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:44:03,431 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1405 transitions. [2020-10-27 15:44:03,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-27 15:44:03,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:03,436 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:44:03,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 15:44:03,436 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:03,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:03,437 INFO L82 PathProgramCache]: Analyzing trace with hash -2065168172, now seen corresponding path program 1 times [2020-10-27 15:44:03,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:03,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875494071] [2020-10-27 15:44:03,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:03,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:03,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:04,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:05,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:08,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:08,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 15:44:08,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:44:08,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 15:44:08,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:08,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:08,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 15:44:08,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-27 15:44:08,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:08,922 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:08,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:08,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:08,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:08,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:08,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:08,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:44:08,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:08,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:08,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:08,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:08,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:09,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:09,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:09,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:09,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:44:09,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:09,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:44:09,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:09,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:09,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:09,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:09,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:09,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:44:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:09,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:09,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:09,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:44:09,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:09,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 15:44:09,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:09,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:09,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:09,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 15:44:09,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:09,193 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 15:44:09,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875494071] [2020-10-27 15:44:09,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:09,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:44:09,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920103799] [2020-10-27 15:44:09,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:44:09,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:09,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:44:09,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:44:09,196 INFO L87 Difference]: Start difference. First operand 992 states and 1405 transitions. Second operand 5 states. [2020-10-27 15:44:09,525 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:44:12,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:12,685 INFO L93 Difference]: Finished difference Result 2722 states and 3983 transitions. [2020-10-27 15:44:12,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:44:12,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 226 [2020-10-27 15:44:12,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:12,696 INFO L225 Difference]: With dead ends: 2722 [2020-10-27 15:44:12,697 INFO L226 Difference]: Without dead ends: 1839 [2020-10-27 15:44:12,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:44:12,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2020-10-27 15:44:12,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1838. [2020-10-27 15:44:12,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1838 states. [2020-10-27 15:44:12,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2509 transitions. [2020-10-27 15:44:12,760 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2509 transitions. Word has length 226 [2020-10-27 15:44:12,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:12,760 INFO L481 AbstractCegarLoop]: Abstraction has 1838 states and 2509 transitions. [2020-10-27 15:44:12,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:44:12,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2509 transitions. [2020-10-27 15:44:12,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-27 15:44:12,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:12,768 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:44:12,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 15:44:12,768 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:12,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:12,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1996920256, now seen corresponding path program 1 times [2020-10-27 15:44:12,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:12,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860564250] [2020-10-27 15:44:12,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:12,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:13,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:13,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:16,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:17,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:17,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-27 15:44:17,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:44:17,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 15:44:17,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 15:44:17,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-27 15:44:17,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:18,568 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:18,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:18,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:18,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:18,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:18,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:18,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:44:18,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:18,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:18,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:18,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:18,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:18,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:18,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:18,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:18,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:44:18,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:18,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 15:44:18,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:18,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:18,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:18,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:18,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:18,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:44:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:18,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:18,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:18,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 15:44:18,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:18,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 15:44:18,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:18,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:18,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:18,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 15:44:18,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:19,310 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 15:44:19,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860564250] [2020-10-27 15:44:19,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:19,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:44:19,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453401205] [2020-10-27 15:44:19,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:44:19,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:19,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:44:19,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:44:19,313 INFO L87 Difference]: Start difference. First operand 1838 states and 2509 transitions. Second operand 5 states. [2020-10-27 15:44:19,929 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 15:44:22,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:22,817 INFO L93 Difference]: Finished difference Result 3740 states and 5205 transitions. [2020-10-27 15:44:22,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:44:22,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2020-10-27 15:44:22,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:22,830 INFO L225 Difference]: With dead ends: 3740 [2020-10-27 15:44:22,831 INFO L226 Difference]: Without dead ends: 1902 [2020-10-27 15:44:22,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:44:22,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2020-10-27 15:44:22,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1902. [2020-10-27 15:44:22,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1902 states. [2020-10-27 15:44:22,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 2584 transitions. [2020-10-27 15:44:22,907 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 2584 transitions. Word has length 227 [2020-10-27 15:44:22,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:22,907 INFO L481 AbstractCegarLoop]: Abstraction has 1902 states and 2584 transitions. [2020-10-27 15:44:22,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:44:22,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 2584 transitions. [2020-10-27 15:44:22,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-27 15:44:22,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:22,916 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:44:22,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 15:44:22,917 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:22,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:22,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1800638532, now seen corresponding path program 1 times [2020-10-27 15:44:22,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:22,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862326295] [2020-10-27 15:44:22,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:22,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:23,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:24,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:26,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:26,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:27,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:27,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-27 15:44:27,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:44:27,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4175 [2020-10-27 15:44:27,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:27,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:27,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 15:44:27,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-27 15:44:27,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:27,489 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:27,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:27,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:27,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:27,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:27,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:27,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:44:27,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:27,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:27,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:27,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:27,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:27,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:27,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:27,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:27,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:44:27,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:27,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:44:27,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:27,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:27,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:27,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:27,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:27,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:44:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:27,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:27,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:27,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 15:44:27,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:27,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 15:44:27,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 15:44:27,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:27,774 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 15:44:27,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862326295] [2020-10-27 15:44:27,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:27,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:44:27,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988367078] [2020-10-27 15:44:27,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:44:27,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:27,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:44:27,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:44:27,777 INFO L87 Difference]: Start difference. First operand 1902 states and 2584 transitions. Second operand 5 states. [2020-10-27 15:44:28,218 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:44:31,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:31,350 INFO L93 Difference]: Finished difference Result 5383 states and 7558 transitions. [2020-10-27 15:44:31,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:44:31,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2020-10-27 15:44:31,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:31,372 INFO L225 Difference]: With dead ends: 5383 [2020-10-27 15:44:31,373 INFO L226 Difference]: Without dead ends: 3590 [2020-10-27 15:44:31,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:44:31,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3590 states. [2020-10-27 15:44:31,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3590 to 3574. [2020-10-27 15:44:31,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3574 states. [2020-10-27 15:44:31,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 4970 transitions. [2020-10-27 15:44:31,498 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 4970 transitions. Word has length 229 [2020-10-27 15:44:31,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:31,499 INFO L481 AbstractCegarLoop]: Abstraction has 3574 states and 4970 transitions. [2020-10-27 15:44:31,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:44:31,499 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 4970 transitions. [2020-10-27 15:44:31,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-27 15:44:31,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:31,512 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:31,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 15:44:31,513 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:31,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:31,513 INFO L82 PathProgramCache]: Analyzing trace with hash -690367191, now seen corresponding path program 1 times [2020-10-27 15:44:31,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:31,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267987598] [2020-10-27 15:44:31,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:31,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:32,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:33,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:33,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:34,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:34,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-27 15:44:34,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:44:34,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3023 [2020-10-27 15:44:34,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:34,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:34,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-27 15:44:34,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-27 15:44:34,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:34,928 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:34,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:34,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:34,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:34,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:34,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:34,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 15:44:34,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:34,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:34,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:34,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:34,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:35,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:35,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:35,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:35,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:44:35,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:35,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:44:35,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:35,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:35,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:35,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:35,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:44:35,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:44:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:35,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:35,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:35,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 15:44:35,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:35,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 15:44:35,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:35,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:35,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:35,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 15:44:35,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:35,212 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 15:44:35,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267987598] [2020-10-27 15:44:35,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:35,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:44:35,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952206799] [2020-10-27 15:44:35,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:44:35,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:35,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:44:35,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:44:35,214 INFO L87 Difference]: Start difference. First operand 3574 states and 4970 transitions. Second operand 5 states. [2020-10-27 15:44:35,487 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:44:38,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:38,562 INFO L93 Difference]: Finished difference Result 10396 states and 14965 transitions. [2020-10-27 15:44:38,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:44:38,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2020-10-27 15:44:38,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:38,603 INFO L225 Difference]: With dead ends: 10396 [2020-10-27 15:44:38,603 INFO L226 Difference]: Without dead ends: 6931 [2020-10-27 15:44:38,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:44:38,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6931 states. [2020-10-27 15:44:38,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6931 to 6928. [2020-10-27 15:44:38,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6928 states. [2020-10-27 15:44:38,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6928 states to 6928 states and 9513 transitions. [2020-10-27 15:44:38,861 INFO L78 Accepts]: Start accepts. Automaton has 6928 states and 9513 transitions. Word has length 251 [2020-10-27 15:44:38,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:38,862 INFO L481 AbstractCegarLoop]: Abstraction has 6928 states and 9513 transitions. [2020-10-27 15:44:38,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:44:38,862 INFO L276 IsEmpty]: Start isEmpty. Operand 6928 states and 9513 transitions. [2020-10-27 15:44:38,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-27 15:44:38,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:38,898 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:44:38,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 15:44:38,899 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:38,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:38,901 INFO L82 PathProgramCache]: Analyzing trace with hash 932961269, now seen corresponding path program 1 times [2020-10-27 15:44:38,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:38,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628871427] [2020-10-27 15:44:38,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:38,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:39,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:39,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:41,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:42,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:43,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:43,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-27 15:44:43,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:44:43,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 15:44:43,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:43,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:44:43,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 15:44:43,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 15:44:43,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:44,257 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:44,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:44,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:44,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:44,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:44,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:44,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:44:44,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:44,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:44,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:44,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:44,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:44,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:44,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:44,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:44,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:44:44,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:44,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 15:44:44,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:44,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:44,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:44,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:44:44,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:44,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:44:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:44,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:44,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:44,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 15:44:44,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:44,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 15:44:44,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:44,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:44,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:44:44,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 15:44:44,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:44,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 15:44:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:44,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:44,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:44,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 15:44:44,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:44,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 15:44:44,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:44,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:44,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:44:44,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 15:44:44,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:44,759 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 92 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-27 15:44:44,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628871427] [2020-10-27 15:44:44,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:44,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:44:44,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970451963] [2020-10-27 15:44:44,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:44:44,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:44,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:44:44,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:44:44,761 INFO L87 Difference]: Start difference. First operand 6928 states and 9513 transitions. Second operand 7 states. [2020-10-27 15:44:45,035 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:44:45,610 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:44:48,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:48,663 INFO L93 Difference]: Finished difference Result 13816 states and 19214 transitions. [2020-10-27 15:44:48,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 15:44:48,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 285 [2020-10-27 15:44:48,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:48,701 INFO L225 Difference]: With dead ends: 13816 [2020-10-27 15:44:48,701 INFO L226 Difference]: Without dead ends: 6997 [2020-10-27 15:44:48,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-27 15:44:48,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6997 states. [2020-10-27 15:44:48,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6997 to 6990. [2020-10-27 15:44:48,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6990 states. [2020-10-27 15:44:48,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6990 states to 6990 states and 9355 transitions. [2020-10-27 15:44:48,958 INFO L78 Accepts]: Start accepts. Automaton has 6990 states and 9355 transitions. Word has length 285 [2020-10-27 15:44:48,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:48,959 INFO L481 AbstractCegarLoop]: Abstraction has 6990 states and 9355 transitions. [2020-10-27 15:44:48,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:44:48,959 INFO L276 IsEmpty]: Start isEmpty. Operand 6990 states and 9355 transitions. [2020-10-27 15:44:48,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-27 15:44:48,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:48,984 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:44:48,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 15:44:48,984 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:48,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:48,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1151569394, now seen corresponding path program 1 times [2020-10-27 15:44:48,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:48,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353202283] [2020-10-27 15:44:48,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:49,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:49,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:49,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:53,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:54,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:54,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-27 15:44:54,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:44:54,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 15:44:54,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:54,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:44:54,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 15:44:54,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-27 15:44:54,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:54,426 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:44:54,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:44:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:54,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:54,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:54,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:44:54,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:54,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 15:44:54,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:54,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:54,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:54,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:54,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:54,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:44:54,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:54,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:54,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:54,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:44:54,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:54,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:44:54,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:44:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:44:54,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:54,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:44:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:54,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:54,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:44:54,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 15:44:54,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:44:54,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 15:44:54,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:44:54,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:44:54,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:44:54,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 15:44:54,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:44:55,095 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 15:44:55,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353202283] [2020-10-27 15:44:55,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:44:55,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:44:55,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925938020] [2020-10-27 15:44:55,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:44:55,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:44:55,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:44:55,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:44:55,098 INFO L87 Difference]: Start difference. First operand 6990 states and 9355 transitions. Second operand 5 states. [2020-10-27 15:44:55,400 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-27 15:44:58,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:44:58,126 INFO L93 Difference]: Finished difference Result 15344 states and 20708 transitions. [2020-10-27 15:44:58,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:44:58,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 293 [2020-10-27 15:44:58,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:44:58,172 INFO L225 Difference]: With dead ends: 15344 [2020-10-27 15:44:58,172 INFO L226 Difference]: Without dead ends: 8463 [2020-10-27 15:44:58,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:44:58,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8463 states. [2020-10-27 15:44:58,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8463 to 8459. [2020-10-27 15:44:58,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8459 states. [2020-10-27 15:44:58,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8459 states to 8459 states and 10932 transitions. [2020-10-27 15:44:58,418 INFO L78 Accepts]: Start accepts. Automaton has 8459 states and 10932 transitions. Word has length 293 [2020-10-27 15:44:58,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:44:58,418 INFO L481 AbstractCegarLoop]: Abstraction has 8459 states and 10932 transitions. [2020-10-27 15:44:58,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:44:58,419 INFO L276 IsEmpty]: Start isEmpty. Operand 8459 states and 10932 transitions. [2020-10-27 15:44:58,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-27 15:44:58,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:44:58,448 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:44:58,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 15:44:58,448 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:44:58,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:44:58,449 INFO L82 PathProgramCache]: Analyzing trace with hash 2089135781, now seen corresponding path program 1 times [2020-10-27 15:44:58,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:44:58,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003929322] [2020-10-27 15:44:58,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:44:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:44:58,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:44:58,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:00,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:02,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:03,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:03,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-27 15:45:03,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:45:03,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-27 15:45:03,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:03,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:03,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 15:45:03,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 15:45:03,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:03,878 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:45:03,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:45:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:03,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:03,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:03,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:45:03,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:03,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:45:03,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:03,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:03,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:03,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:03,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:03,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:45:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:04,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:04,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:04,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 15:45:04,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:04,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 15:45:04,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:04,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:45:04,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:04,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 15:45:04,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:04,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 15:45:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:04,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:04,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:04,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 15:45:04,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:04,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 15:45:04,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:04,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:04,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:45:04,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 15:45:04,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:04,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 15:45:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:04,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:04,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:04,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 15:45:04,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:04,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 15:45:04,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:04,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:04,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 15:45:04,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:04,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:04,290 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 134 proven. 33 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-27 15:45:04,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003929322] [2020-10-27 15:45:04,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:45:04,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:45:04,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045366015] [2020-10-27 15:45:04,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:45:04,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:45:04,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:45:04,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:45:04,294 INFO L87 Difference]: Start difference. First operand 8459 states and 10932 transitions. Second operand 7 states. [2020-10-27 15:45:04,822 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:45:05,257 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:45:11,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:45:11,030 INFO L93 Difference]: Finished difference Result 29033 states and 42387 transitions. [2020-10-27 15:45:11,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:45:11,031 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 309 [2020-10-27 15:45:11,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:45:11,186 INFO L225 Difference]: With dead ends: 29033 [2020-10-27 15:45:11,186 INFO L226 Difference]: Without dead ends: 20683 [2020-10-27 15:45:11,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:45:11,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20683 states. [2020-10-27 15:45:11,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20683 to 19410. [2020-10-27 15:45:11,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19410 states. [2020-10-27 15:45:12,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19410 states to 19410 states and 25461 transitions. [2020-10-27 15:45:12,135 INFO L78 Accepts]: Start accepts. Automaton has 19410 states and 25461 transitions. Word has length 309 [2020-10-27 15:45:12,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:45:12,135 INFO L481 AbstractCegarLoop]: Abstraction has 19410 states and 25461 transitions. [2020-10-27 15:45:12,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:45:12,135 INFO L276 IsEmpty]: Start isEmpty. Operand 19410 states and 25461 transitions. [2020-10-27 15:45:12,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-27 15:45:12,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:45:12,203 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:12,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 15:45:12,203 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:45:12,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:45:12,204 INFO L82 PathProgramCache]: Analyzing trace with hash 126428438, now seen corresponding path program 1 times [2020-10-27 15:45:12,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:45:12,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085529669] [2020-10-27 15:45:12,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:45:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:12,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:12,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:14,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:17,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:17,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-27 15:45:17,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:45:17,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 15:45:17,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:17,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:17,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 15:45:17,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 15:45:17,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:17,591 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:45:17,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:45:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:17,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:17,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:17,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:45:17,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:17,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:45:17,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:17,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:17,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:17,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:17,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:17,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:45:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:17,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:17,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:17,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 15:45:17,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:17,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 15:45:17,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:17,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:45:17,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:17,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 15:45:17,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:17,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 15:45:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:17,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:17,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:17,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 15:45:17,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:17,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 15:45:17,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:17,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:17,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:45:17,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 15:45:17,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:17,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 15:45:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:17,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:18,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:18,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 15:45:18,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:18,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 15:45:18,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:18,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:18,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 15:45:18,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:18,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:18,118 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 154 proven. 33 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-27 15:45:18,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085529669] [2020-10-27 15:45:18,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:45:18,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:45:18,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193752068] [2020-10-27 15:45:18,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:45:18,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:45:18,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:45:18,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:45:18,120 INFO L87 Difference]: Start difference. First operand 19410 states and 25461 transitions. Second operand 7 states. [2020-10-27 15:45:18,522 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 15:45:19,084 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 15:45:23,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:45:23,823 INFO L93 Difference]: Finished difference Result 51155 states and 71683 transitions. [2020-10-27 15:45:23,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:45:23,824 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 329 [2020-10-27 15:45:23,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:45:23,995 INFO L225 Difference]: With dead ends: 51155 [2020-10-27 15:45:23,996 INFO L226 Difference]: Without dead ends: 36364 [2020-10-27 15:45:24,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:45:24,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36364 states. [2020-10-27 15:45:25,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36364 to 35810. [2020-10-27 15:45:25,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35810 states. [2020-10-27 15:45:25,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35810 states to 35810 states and 47264 transitions. [2020-10-27 15:45:25,246 INFO L78 Accepts]: Start accepts. Automaton has 35810 states and 47264 transitions. Word has length 329 [2020-10-27 15:45:25,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:45:25,247 INFO L481 AbstractCegarLoop]: Abstraction has 35810 states and 47264 transitions. [2020-10-27 15:45:25,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:45:25,248 INFO L276 IsEmpty]: Start isEmpty. Operand 35810 states and 47264 transitions. [2020-10-27 15:45:25,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-27 15:45:25,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:45:25,338 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:25,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 15:45:25,338 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:45:25,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:45:25,339 INFO L82 PathProgramCache]: Analyzing trace with hash 893776297, now seen corresponding path program 1 times [2020-10-27 15:45:25,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:45:25,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396453346] [2020-10-27 15:45:25,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:45:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:25,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:25,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:25,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:27,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:30,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:30,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-27 15:45:30,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:45:30,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-27 15:45:30,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:30,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:30,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 15:45:30,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 15:45:30,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:30,781 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:45:30,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:45:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:30,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:30,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:30,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:45:30,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:30,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 15:45:30,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:30,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:30,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:30,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:30,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:30,916 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 15:45:30,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:45:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:30,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:30,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:30,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:45:30,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:30,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 15:45:30,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:30,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:30,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:30,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:30,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:30,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 15:45:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:30,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:30,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:30,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 15:45:30,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:30,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 15:45:30,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:30,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:45:30,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:30,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 15:45:30,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:31,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 15:45:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:31,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:31,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:31,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 15:45:31,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:31,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-27 15:45:31,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:31,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:31,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:45:31,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 15:45:31,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:31,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-27 15:45:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:31,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:31,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:31,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 15:45:31,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:31,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 15:45:31,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:31,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:31,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 15:45:31,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:31,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:31,367 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 199 proven. 33 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-27 15:45:31,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396453346] [2020-10-27 15:45:31,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:45:31,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:45:31,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244451155] [2020-10-27 15:45:31,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:45:31,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:45:31,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:45:31,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:45:31,369 INFO L87 Difference]: Start difference. First operand 35810 states and 47264 transitions. Second operand 7 states. [2020-10-27 15:45:31,893 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:45:33,486 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 15:45:37,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:45:37,052 INFO L93 Difference]: Finished difference Result 76496 states and 106529 transitions. [2020-10-27 15:45:37,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:45:37,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 350 [2020-10-27 15:45:37,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:45:37,238 INFO L225 Difference]: With dead ends: 76496 [2020-10-27 15:45:37,238 INFO L226 Difference]: Without dead ends: 40799 [2020-10-27 15:45:37,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:45:37,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40799 states. [2020-10-27 15:45:38,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40799 to 40153. [2020-10-27 15:45:38,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40153 states. [2020-10-27 15:45:38,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40153 states to 40153 states and 52413 transitions. [2020-10-27 15:45:38,498 INFO L78 Accepts]: Start accepts. Automaton has 40153 states and 52413 transitions. Word has length 350 [2020-10-27 15:45:38,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:45:38,498 INFO L481 AbstractCegarLoop]: Abstraction has 40153 states and 52413 transitions. [2020-10-27 15:45:38,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:45:38,498 INFO L276 IsEmpty]: Start isEmpty. Operand 40153 states and 52413 transitions. [2020-10-27 15:45:38,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-27 15:45:38,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:45:38,593 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:38,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 15:45:38,594 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:45:38,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:45:38,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1302867055, now seen corresponding path program 1 times [2020-10-27 15:45:38,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:45:38,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014625612] [2020-10-27 15:45:38,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:45:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:38,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:38,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:38,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:43,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:43,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-27 15:45:43,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:45:43,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 15:45:43,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:43,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:43,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-27 15:45:43,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 15:45:43,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:43,984 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:45:43,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:45:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:43,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:43,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:43,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:45:43,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:43,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:45:43,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:43,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:43,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:43,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:43,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:44,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:45:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:44,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:44,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:44,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:45:44,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:44,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 15:45:44,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:44,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:44,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:44,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:44,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:44,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 15:45:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:44,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:44,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:44,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 15:45:44,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:44,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 15:45:44,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:44,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:45:44,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:44,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 15:45:44,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:44,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-27 15:45:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:44,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:44,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:44,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 15:45:44,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:44,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 15:45:44,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:44,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:44,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:45:44,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 15:45:44,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:44,658 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-27 15:45:44,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014625612] [2020-10-27 15:45:44,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:45:44,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:45:44,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943803197] [2020-10-27 15:45:44,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:45:44,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:45:44,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:45:44,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:45:44,660 INFO L87 Difference]: Start difference. First operand 40153 states and 52413 transitions. Second operand 7 states. [2020-10-27 15:45:45,197 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:45:46,450 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 15:45:49,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:45:49,016 INFO L93 Difference]: Finished difference Result 78591 states and 106709 transitions. [2020-10-27 15:45:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:45:49,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 354 [2020-10-27 15:45:49,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:45:49,178 INFO L225 Difference]: With dead ends: 78591 [2020-10-27 15:45:49,178 INFO L226 Difference]: Without dead ends: 38773 [2020-10-27 15:45:49,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 15:45:49,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38773 states. [2020-10-27 15:45:50,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38773 to 37593. [2020-10-27 15:45:50,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37593 states. [2020-10-27 15:45:50,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37593 states to 37593 states and 47448 transitions. [2020-10-27 15:45:50,424 INFO L78 Accepts]: Start accepts. Automaton has 37593 states and 47448 transitions. Word has length 354 [2020-10-27 15:45:50,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:45:50,425 INFO L481 AbstractCegarLoop]: Abstraction has 37593 states and 47448 transitions. [2020-10-27 15:45:50,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:45:50,425 INFO L276 IsEmpty]: Start isEmpty. Operand 37593 states and 47448 transitions. [2020-10-27 15:45:50,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-27 15:45:50,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:45:50,519 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:45:50,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 15:45:50,519 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:45:50,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:45:50,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1659276186, now seen corresponding path program 1 times [2020-10-27 15:45:50,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:45:50,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156944921] [2020-10-27 15:45:50,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:45:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:50,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:50,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:50,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:51,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:52,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:55,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:55,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:55,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:55,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-27 15:45:55,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 15:45:55,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 15:45:55,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:55,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:55,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 15:45:55,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 15:45:55,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:55,942 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:45:55,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:45:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:55,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:55,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:55,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:45:55,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:55,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:45:55,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:55,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:55,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:55,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:55,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:56,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:45:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:56,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:56,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:56,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 15:45:56,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:56,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 15:45:56,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:56,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:56,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:56,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:56,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:56,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 15:45:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:56,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:56,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:56,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:45:56,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:56,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:45:56,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:56,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:45:56,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:56,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:45:56,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:56,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 15:45:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:56,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:56,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:56,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:45:56,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:56,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 15:45:56,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:56,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:45:56,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:45:56,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 15:45:56,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:56,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 15:45:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:45:56,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:45:56,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:45:56,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 15:45:56,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:45:56,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-27 15:45:56,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:45:56,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:45:56,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:45:56,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 15:45:56,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:45:57,040 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-27 15:45:57,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156944921] [2020-10-27 15:45:57,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:45:57,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:45:57,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67397202] [2020-10-27 15:45:57,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:45:57,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:45:57,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:45:57,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:45:57,042 INFO L87 Difference]: Start difference. First operand 37593 states and 47448 transitions. Second operand 7 states. [2020-10-27 15:45:57,702 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 15:46:01,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:46:01,489 INFO L93 Difference]: Finished difference Result 70464 states and 89281 transitions. [2020-10-27 15:46:01,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:46:01,490 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 366 [2020-10-27 15:46:01,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:46:01,639 INFO L225 Difference]: With dead ends: 70464 [2020-10-27 15:46:01,639 INFO L226 Difference]: Without dead ends: 41261 [2020-10-27 15:46:01,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-27 15:46:01,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41261 states. [2020-10-27 15:46:02,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41261 to 41208. [2020-10-27 15:46:02,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41208 states. [2020-10-27 15:46:02,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41208 states to 41208 states and 51860 transitions. [2020-10-27 15:46:02,715 INFO L78 Accepts]: Start accepts. Automaton has 41208 states and 51860 transitions. Word has length 366 [2020-10-27 15:46:02,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:46:02,716 INFO L481 AbstractCegarLoop]: Abstraction has 41208 states and 51860 transitions. [2020-10-27 15:46:02,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:46:02,716 INFO L276 IsEmpty]: Start isEmpty. Operand 41208 states and 51860 transitions. [2020-10-27 15:46:02,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-27 15:46:02,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:46:02,770 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:02,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 15:46:02,770 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:46:02,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:46:02,771 INFO L82 PathProgramCache]: Analyzing trace with hash -2054415611, now seen corresponding path program 1 times [2020-10-27 15:46:02,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:46:02,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464165552] [2020-10-27 15:46:02,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:46:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:03,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:03,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:04,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:04,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:08,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:08,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-27 15:46:08,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:46:08,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 15:46:08,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:08,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:46:08,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-27 15:46:08,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 15:46:08,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:46:08,425 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:46:08,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:46:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:08,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:08,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:08,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:46:08,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:08,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:46:08,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:08,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:08,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:08,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:08,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:08,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:46:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:08,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:08,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:08,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 15:46:08,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:08,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 15:46:08,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:08,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:08,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:08,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:08,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:08,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 15:46:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:08,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:08,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:08,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 15:46:08,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:08,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 15:46:08,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:08,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:46:08,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:08,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 15:46:08,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:08,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 15:46:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:08,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:08,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:08,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 15:46:08,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:08,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 15:46:08,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:08,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:46:08,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:46:08,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 15:46:08,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:09,367 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-27 15:46:09,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464165552] [2020-10-27 15:46:09,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:46:09,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:46:09,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010611359] [2020-10-27 15:46:09,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:46:09,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:46:09,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:46:09,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:46:09,374 INFO L87 Difference]: Start difference. First operand 41208 states and 51860 transitions. Second operand 7 states. [2020-10-27 15:46:11,210 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:46:15,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:46:15,334 INFO L93 Difference]: Finished difference Result 115868 states and 167360 transitions. [2020-10-27 15:46:15,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 15:46:15,335 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 368 [2020-10-27 15:46:15,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:46:15,976 INFO L225 Difference]: With dead ends: 115868 [2020-10-27 15:46:15,976 INFO L226 Difference]: Without dead ends: 75042 [2020-10-27 15:46:16,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-27 15:46:16,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75042 states. [2020-10-27 15:46:18,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75042 to 72332. [2020-10-27 15:46:18,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72332 states. [2020-10-27 15:46:18,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72332 states to 72332 states and 89615 transitions. [2020-10-27 15:46:18,715 INFO L78 Accepts]: Start accepts. Automaton has 72332 states and 89615 transitions. Word has length 368 [2020-10-27 15:46:18,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:46:18,716 INFO L481 AbstractCegarLoop]: Abstraction has 72332 states and 89615 transitions. [2020-10-27 15:46:18,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:46:18,716 INFO L276 IsEmpty]: Start isEmpty. Operand 72332 states and 89615 transitions. [2020-10-27 15:46:18,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-27 15:46:18,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:46:18,806 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:18,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 15:46:18,806 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:46:18,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:46:18,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1633701963, now seen corresponding path program 1 times [2020-10-27 15:46:18,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:46:18,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470770053] [2020-10-27 15:46:18,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:46:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:19,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:19,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:19,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:23,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:23,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 389 [2020-10-27 15:46:23,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:46:23,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 15:46:23,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:23,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:46:23,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-27 15:46:23,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 15:46:23,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:24,201 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:46:24,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:46:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:24,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:24,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:24,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:46:24,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:24,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:46:24,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:24,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:24,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:24,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:24,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 37 [2020-10-27 15:46:24,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:46:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:24,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:24,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:24,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:46:24,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:24,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 15:46:24,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:24,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:24,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:24,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:24,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 15:46:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:24,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:24,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:24,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 15:46:24,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:24,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 15:46:24,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:46:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:46:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 15:46:24,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:24,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 15:46:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:24,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:24,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:24,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 15:46:24,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:24,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-27 15:46:24,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:24,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:46:24,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:46:24,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 15:46:24,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:24,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 15:46:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:46:24,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:46:24,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:46:24,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 15:46:24,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:46:24,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 15:46:24,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:46:24,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:46:24,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 15:46:24,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:46:24,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:46:25,256 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 241 proven. 33 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-27 15:46:25,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470770053] [2020-10-27 15:46:25,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:46:25,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:46:25,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44394582] [2020-10-27 15:46:25,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:46:25,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:46:25,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:46:25,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:46:25,258 INFO L87 Difference]: Start difference. First operand 72332 states and 89615 transitions. Second operand 7 states. [2020-10-27 15:46:26,014 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:46:26,758 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 163