/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:00:01,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:00:01,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:00:01,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:00:01,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:00:01,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:00:01,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:00:01,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:00:01,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:00:01,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:00:01,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:00:01,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:00:01,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:00:01,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:00:01,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:00:01,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:00:01,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:00:01,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:00:01,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:00:01,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:00:01,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:00:01,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:00:01,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:00:01,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:00:01,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:00:01,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:00:01,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:00:01,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:00:01,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:00:01,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:00:01,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:00:01,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:00:01,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:00:01,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:00:01,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:00:01,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:00:01,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:00:01,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:00:01,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:00:01,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:00:01,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:00:01,765 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 [2020-10-26 23:00:01,821 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:00:01,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:00:01,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:00:01,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:00:01,828 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:00:01,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:00:01,829 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:00:01,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:00:01,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:00:01,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:00:01,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:00:01,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:00:01,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:00:01,831 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:00:01,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:00:01,831 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:00:01,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:00:01,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:00:01,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:00:01,832 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:00:01,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:00:01,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:00:01,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:00:01,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:00:01,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:00:01,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:00:01,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:00:01,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:00:01,834 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:00:01,834 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:00:02,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:00:02,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:00:02,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:00:02,321 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:00:02,322 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:00:02,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label52.c [2020-10-26 23:00:02,410 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01153c30d/5ef2a209542940dca9cf3c95d58f9c1b/FLAGd1a6eb044 [2020-10-26 23:00:03,562 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:00:03,563 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label52.c [2020-10-26 23:00:03,596 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01153c30d/5ef2a209542940dca9cf3c95d58f9c1b/FLAGd1a6eb044 [2020-10-26 23:00:03,966 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01153c30d/5ef2a209542940dca9cf3c95d58f9c1b [2020-10-26 23:00:03,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:00:03,981 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:00:03,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:00:03,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:00:03,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:00:03,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:00:03" (1/1) ... [2020-10-26 23:00:03,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f84cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:00:03, skipping insertion in model container [2020-10-26 23:00:03,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:00:03" (1/1) ... [2020-10-26 23:00:04,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:00:04,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:00:05,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:00:05,896 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:00:06,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:00:06,756 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:00:06,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:00:06 WrapperNode [2020-10-26 23:00:06,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:00:06,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:00:06,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:00:06,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:00:06,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:00:06" (1/1) ... [2020-10-26 23:00:06,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:00:06" (1/1) ... [2020-10-26 23:00:06,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:00:06" (1/1) ... [2020-10-26 23:00:06,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:00:06" (1/1) ... [2020-10-26 23:00:07,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:00:06" (1/1) ... [2020-10-26 23:00:07,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:00:06" (1/1) ... [2020-10-26 23:00:07,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:00:06" (1/1) ... [2020-10-26 23:00:07,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:00:07,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:00:07,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:00:07,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:00:07,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:00:06" (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 [2020-10-26 23:00:07,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:00:07,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:00:07,347 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:00:07,347 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:00:07,347 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:00:07,348 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 23:00:07,348 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 23:00:07,348 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:00:07,348 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:00:07,349 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:00:07,350 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 23:00:07,350 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 23:00:07,350 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:00:07,350 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:00:07,351 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:00:07,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:00:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:00:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:00:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:00:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:00:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:00:07,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:00:07,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:00:07,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:00:07,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:00:12,779 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:00:12,780 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:00:12,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:00:12 BoogieIcfgContainer [2020-10-26 23:00:12,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:00:12,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:00:12,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:00:12,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:00:12,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:00:03" (1/3) ... [2020-10-26 23:00:12,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f690b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:00:12, skipping insertion in model container [2020-10-26 23:00:12,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:00:06" (2/3) ... [2020-10-26 23:00:12,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f690b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:00:12, skipping insertion in model container [2020-10-26 23:00:12,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:00:12" (3/3) ... [2020-10-26 23:00:12,798 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label52.c [2020-10-26 23:00:12,813 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:00:12,820 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:00:12,835 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:00:12,883 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:00:12,884 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:00:12,884 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:00:12,884 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:00:12,884 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:00:12,884 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:00:12,885 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:00:12,885 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:00:12,936 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-26 23:00:12,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-26 23:00:12,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:00:12,947 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] [2020-10-26 23:00:12,948 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:00:12,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:00:12,962 INFO L82 PathProgramCache]: Analyzing trace with hash -895518588, now seen corresponding path program 1 times [2020-10-26 23:00:12,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:00:12,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666883195] [2020-10-26 23:00:12,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:00:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:13,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:13,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:13,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-26 23:00:13,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:13,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-10-26 23:00:13,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:13,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:00:13,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:00:13,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 23:00:13,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:00:13,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:00:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:14,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:14,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:14,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:00:14,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:14,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:00:14,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:14,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:00:14,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:00:14,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:00:14,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:00:14,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666883195] [2020-10-26 23:00:14,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:00:14,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 23:00:14,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484106328] [2020-10-26 23:00:14,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:00:14,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:00:14,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:00:14,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:00:14,183 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-26 23:00:26,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:00:26,691 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-26 23:00:26,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:00:26,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-26 23:00:26,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:00:26,728 INFO L225 Difference]: With dead ends: 2476 [2020-10-26 23:00:26,728 INFO L226 Difference]: Without dead ends: 1569 [2020-10-26 23:00:26,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:00:26,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-26 23:00:26,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-26 23:00:26,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-26 23:00:26,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2522 transitions. [2020-10-26 23:00:26,934 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2522 transitions. Word has length 37 [2020-10-26 23:00:26,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:00:26,935 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2522 transitions. [2020-10-26 23:00:26,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:00:26,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2522 transitions. [2020-10-26 23:00:26,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-26 23:00:26,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:00:26,945 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:00:26,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:00:26,946 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:00:26,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:00:26,948 INFO L82 PathProgramCache]: Analyzing trace with hash 165879237, now seen corresponding path program 1 times [2020-10-26 23:00:26,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:00:26,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200588275] [2020-10-26 23:00:26,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:00:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:27,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:27,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:27,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:27,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-26 23:00:27,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:00:27,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 774 [2020-10-26 23:00:27,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:27,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:00:27,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:00:27,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:00:27,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:00:27,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:00:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:27,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:27,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:27,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:00:27,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:27,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:00:27,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:27,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:00:27,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:00:27,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:00:27,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:28,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:00:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:28,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:28,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:28,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 23:00:28,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:28,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-26 23:00:28,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:28,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:00:28,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:00:28,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:00:28,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:28,363 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:00:28,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200588275] [2020-10-26 23:00:28,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:00:28,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:00:28,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337894587] [2020-10-26 23:00:28,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:00:28,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:00:28,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:00:28,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:00:28,368 INFO L87 Difference]: Start difference. First operand 1554 states and 2522 transitions. Second operand 6 states. [2020-10-26 23:00:41,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:00:41,402 INFO L93 Difference]: Finished difference Result 4692 states and 7653 transitions. [2020-10-26 23:00:41,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:00:41,403 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2020-10-26 23:00:41,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:00:41,422 INFO L225 Difference]: With dead ends: 4692 [2020-10-26 23:00:41,423 INFO L226 Difference]: Without dead ends: 3144 [2020-10-26 23:00:41,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:00:41,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3144 states. [2020-10-26 23:00:41,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3144 to 3126. [2020-10-26 23:00:41,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3126 states. [2020-10-26 23:00:41,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3126 states to 3126 states and 4444 transitions. [2020-10-26 23:00:41,522 INFO L78 Accepts]: Start accepts. Automaton has 3126 states and 4444 transitions. Word has length 112 [2020-10-26 23:00:41,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:00:41,523 INFO L481 AbstractCegarLoop]: Abstraction has 3126 states and 4444 transitions. [2020-10-26 23:00:41,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:00:41,523 INFO L276 IsEmpty]: Start isEmpty. Operand 3126 states and 4444 transitions. [2020-10-26 23:00:41,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-26 23:00:41,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:00:41,526 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:00:41,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:00:41,527 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:00:41,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:00:41,528 INFO L82 PathProgramCache]: Analyzing trace with hash -732780083, now seen corresponding path program 1 times [2020-10-26 23:00:41,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:00:41,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487870757] [2020-10-26 23:00:41,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:00:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:41,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:41,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:42,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:42,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-26 23:00:42,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:00:42,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 926 [2020-10-26 23:00:42,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:42,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:00:42,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:00:42,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:00:42,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:42,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:00:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:42,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:42,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:42,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:00:42,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:42,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:00:42,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:42,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:00:42,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:00:42,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:00:42,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:42,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:00:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:42,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:42,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:42,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:00:42,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:42,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-26 23:00:42,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:42,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:00:42,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:00:42,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:00:42,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:43,136 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:00:43,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487870757] [2020-10-26 23:00:43,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:00:43,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:00:43,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918750400] [2020-10-26 23:00:43,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:00:43,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:00:43,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:00:43,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:00:43,142 INFO L87 Difference]: Start difference. First operand 3126 states and 4444 transitions. Second operand 7 states. [2020-10-26 23:00:58,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:00:58,554 INFO L93 Difference]: Finished difference Result 9538 states and 13736 transitions. [2020-10-26 23:00:58,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:00:58,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-26 23:00:58,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:00:58,600 INFO L225 Difference]: With dead ends: 9538 [2020-10-26 23:00:58,600 INFO L226 Difference]: Without dead ends: 6418 [2020-10-26 23:00:58,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:00:58,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6418 states. [2020-10-26 23:00:58,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6418 to 6337. [2020-10-26 23:00:58,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6337 states. [2020-10-26 23:00:58,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6337 states to 6337 states and 8133 transitions. [2020-10-26 23:00:58,805 INFO L78 Accepts]: Start accepts. Automaton has 6337 states and 8133 transitions. Word has length 116 [2020-10-26 23:00:58,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:00:58,806 INFO L481 AbstractCegarLoop]: Abstraction has 6337 states and 8133 transitions. [2020-10-26 23:00:58,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:00:58,806 INFO L276 IsEmpty]: Start isEmpty. Operand 6337 states and 8133 transitions. [2020-10-26 23:00:58,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-26 23:00:58,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:00:58,809 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:00:58,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:00:58,810 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:00:58,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:00:58,810 INFO L82 PathProgramCache]: Analyzing trace with hash -2121509927, now seen corresponding path program 1 times [2020-10-26 23:00:58,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:00:58,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82389324] [2020-10-26 23:00:58,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:00:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:58,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:59,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:59,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:59,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:00:59,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:00:59,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 940 [2020-10-26 23:00:59,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:59,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:00:59,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:00:59,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-26 23:00:59,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:59,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:00:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:59,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:59,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:59,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:00:59,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:59,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:00:59,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:59,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:00:59,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:00:59,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:00:59,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:59,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:00:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:59,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:00,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:00,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-26 23:01:00,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:01:00,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-26 23:01:00,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:00,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:01:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:01:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:01:00,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:00,169 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:01:00,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82389324] [2020-10-26 23:01:00,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:01:00,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:01:00,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676652028] [2020-10-26 23:01:00,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:01:00,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:01:00,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:01:00,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:01:00,172 INFO L87 Difference]: Start difference. First operand 6337 states and 8133 transitions. Second operand 7 states. [2020-10-26 23:01:16,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:01:16,722 INFO L93 Difference]: Finished difference Result 18411 states and 24119 transitions. [2020-10-26 23:01:16,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:01:16,724 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-26 23:01:16,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:01:16,789 INFO L225 Difference]: With dead ends: 18411 [2020-10-26 23:01:16,789 INFO L226 Difference]: Without dead ends: 12080 [2020-10-26 23:01:16,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:01:16,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12080 states. [2020-10-26 23:01:17,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12080 to 11931. [2020-10-26 23:01:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11931 states. [2020-10-26 23:01:17,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11931 states to 11931 states and 14751 transitions. [2020-10-26 23:01:17,158 INFO L78 Accepts]: Start accepts. Automaton has 11931 states and 14751 transitions. Word has length 122 [2020-10-26 23:01:17,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:01:17,158 INFO L481 AbstractCegarLoop]: Abstraction has 11931 states and 14751 transitions. [2020-10-26 23:01:17,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:01:17,159 INFO L276 IsEmpty]: Start isEmpty. Operand 11931 states and 14751 transitions. [2020-10-26 23:01:17,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-26 23:01:17,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:01:17,162 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:01:17,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:01:17,162 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:01:17,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:01:17,163 INFO L82 PathProgramCache]: Analyzing trace with hash -2011679411, now seen corresponding path program 1 times [2020-10-26 23:01:17,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:01:17,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990495080] [2020-10-26 23:01:17,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:01:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:17,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:17,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:19,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:19,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-26 23:01:19,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:01:19,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1798 [2020-10-26 23:01:19,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:19,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:01:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:01:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:01:19,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:19,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:01:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:19,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:19,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:19,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:01:19,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:01:19,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:01:19,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:01:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:01:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:01:19,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:19,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:01:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:19,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:19,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:19,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 23:01:19,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:01:19,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-26 23:01:19,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:19,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:01:19,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:01:19,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:01:19,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:19,902 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:01:19,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990495080] [2020-10-26 23:01:19,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:01:19,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 23:01:19,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224328168] [2020-10-26 23:01:19,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:01:19,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:01:19,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:01:19,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:01:19,905 INFO L87 Difference]: Start difference. First operand 11931 states and 14751 transitions. Second operand 8 states. [2020-10-26 23:01:46,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:01:46,369 INFO L93 Difference]: Finished difference Result 25999 states and 34182 transitions. [2020-10-26 23:01:46,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 23:01:46,371 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 185 [2020-10-26 23:01:46,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:01:46,446 INFO L225 Difference]: With dead ends: 25999 [2020-10-26 23:01:46,447 INFO L226 Difference]: Without dead ends: 19542 [2020-10-26 23:01:46,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-26 23:01:46,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19542 states. [2020-10-26 23:01:46,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19542 to 18565. [2020-10-26 23:01:46,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18565 states. [2020-10-26 23:01:46,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18565 states to 18565 states and 22400 transitions. [2020-10-26 23:01:46,982 INFO L78 Accepts]: Start accepts. Automaton has 18565 states and 22400 transitions. Word has length 185 [2020-10-26 23:01:46,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:01:46,983 INFO L481 AbstractCegarLoop]: Abstraction has 18565 states and 22400 transitions. [2020-10-26 23:01:46,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:01:46,989 INFO L276 IsEmpty]: Start isEmpty. Operand 18565 states and 22400 transitions. [2020-10-26 23:01:46,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-26 23:01:46,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:01:46,994 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:01:46,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:01:46,996 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:01:46,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:01:46,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1404615086, now seen corresponding path program 1 times [2020-10-26 23:01:46,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:01:46,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701892676] [2020-10-26 23:01:46,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:01:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:47,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:47,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:47,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:48,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:48,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:01:48,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:01:48,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1362 [2020-10-26 23:01:48,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:48,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:01:48,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 23:01:48,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-26 23:01:48,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:48,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:01:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:48,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:48,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:48,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:01:48,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:01:48,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:01:48,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:48,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:01:48,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:01:48,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:01:48,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:48,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:01:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:48,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:48,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:48,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 23:01:48,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:01:48,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 23:01:48,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:48,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:01:48,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:01:48,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:01:48,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:48,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-26 23:01:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:48,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:48,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:48,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:01:48,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:01:48,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-26 23:01:48,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:48,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:01:48,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:01:48,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:01:48,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:49,171 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:01:49,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701892676] [2020-10-26 23:01:49,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:01:49,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:01:49,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493762338] [2020-10-26 23:01:49,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:01:49,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:01:49,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:01:49,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:01:49,174 INFO L87 Difference]: Start difference. First operand 18565 states and 22400 transitions. Second operand 7 states. [2020-10-26 23:02:10,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:02:10,047 INFO L93 Difference]: Finished difference Result 39084 states and 48946 transitions. [2020-10-26 23:02:10,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:02:10,049 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-10-26 23:02:10,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:02:10,119 INFO L225 Difference]: With dead ends: 39084 [2020-10-26 23:02:10,119 INFO L226 Difference]: Without dead ends: 18143 [2020-10-26 23:02:10,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:02:10,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18143 states. [2020-10-26 23:02:10,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18143 to 17793. [2020-10-26 23:02:10,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17793 states. [2020-10-26 23:02:10,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17793 states to 17793 states and 20844 transitions. [2020-10-26 23:02:10,599 INFO L78 Accepts]: Start accepts. Automaton has 17793 states and 20844 transitions. Word has length 212 [2020-10-26 23:02:10,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:02:10,600 INFO L481 AbstractCegarLoop]: Abstraction has 17793 states and 20844 transitions. [2020-10-26 23:02:10,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:02:10,600 INFO L276 IsEmpty]: Start isEmpty. Operand 17793 states and 20844 transitions. [2020-10-26 23:02:10,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-26 23:02:10,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:02:10,605 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:02:10,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:02:10,605 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:02:10,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:02:10,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1921591476, now seen corresponding path program 1 times [2020-10-26 23:02:10,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:02:10,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985467784] [2020-10-26 23:02:10,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:02:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:02:10,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:11,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:11,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:02:11,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-26 23:02:11,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:02:11,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1308 [2020-10-26 23:02:11,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:02:11,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:02:11,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-26 23:02:11,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:02:11,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:02:12,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:02:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:02:12,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:12,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:02:12,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:02:12,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:02:12,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:02:12,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:02:12,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:02:12,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:02:12,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:02:12,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:02:12,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:02:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:02:12,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:12,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:02:12,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 23:02:12,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:02:12,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-26 23:02:12,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:02:12,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:02:12,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:02:12,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-26 23:02:12,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:02:12,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 23:02:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:02:12,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:12,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:02:12,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 23:02:12,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:02:12,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-26 23:02:12,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:02:12,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:02:12,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:02:12,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:02:12,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:02:12,826 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:02:12,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985467784] [2020-10-26 23:02:12,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:02:12,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:02:12,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133633675] [2020-10-26 23:02:12,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:02:12,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:02:12,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:02:12,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:02:12,830 INFO L87 Difference]: Start difference. First operand 17793 states and 20844 transitions. Second operand 8 states. [2020-10-26 23:02:13,017 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 23:02:48,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:02:48,289 INFO L93 Difference]: Finished difference Result 60036 states and 74754 transitions. [2020-10-26 23:02:48,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:02:48,292 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 271 [2020-10-26 23:02:48,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:02:48,437 INFO L225 Difference]: With dead ends: 60036 [2020-10-26 23:02:48,438 INFO L226 Difference]: Without dead ends: 43016 [2020-10-26 23:02:48,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:02:48,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43016 states. [2020-10-26 23:02:49,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43016 to 39892. [2020-10-26 23:02:49,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39892 states. [2020-10-26 23:02:49,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39892 states to 39892 states and 49710 transitions. [2020-10-26 23:02:49,713 INFO L78 Accepts]: Start accepts. Automaton has 39892 states and 49710 transitions. Word has length 271 [2020-10-26 23:02:49,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:02:49,714 INFO L481 AbstractCegarLoop]: Abstraction has 39892 states and 49710 transitions. [2020-10-26 23:02:49,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:02:49,715 INFO L276 IsEmpty]: Start isEmpty. Operand 39892 states and 49710 transitions. [2020-10-26 23:02:49,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-26 23:02:49,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:02:49,720 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:02:49,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:02:49,721 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:02:49,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:02:49,722 INFO L82 PathProgramCache]: Analyzing trace with hash 883955116, now seen corresponding path program 1 times [2020-10-26 23:02:49,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:02:49,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269118357] [2020-10-26 23:02:49,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:02:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:02:49,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:49,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:51,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:52,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:02:52,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-26 23:02:52,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:02:52,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2274 [2020-10-26 23:02:52,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:02:52,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:02:52,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-26 23:02:52,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 23:02:52,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:02:52,272 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:02:52,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:02:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:02:52,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:52,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:02:52,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:02:52,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:02:52,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:02:52,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:02:52,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:02:52,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:02:52,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:02:52,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:02:52,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:02:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:02:52,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:52,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:02:52,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:02:52,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:02:52,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-26 23:02:52,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:02:52,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:02:52,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:02:52,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-26 23:02:52,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:02:52,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 23:02:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:02:52,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:52,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:52,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:02:52,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 23:02:52,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:02:52,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-26 23:02:52,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:02:52,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:02:52,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:02:52,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:02:52,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:02:52,952 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 138 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:02:52,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269118357] [2020-10-26 23:02:52,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:02:52,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:02:52,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784585833] [2020-10-26 23:02:52,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:02:52,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:02:52,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:02:52,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:02:52,955 INFO L87 Difference]: Start difference. First operand 39892 states and 49710 transitions. Second operand 7 states. [2020-10-26 23:03:19,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:03:19,098 INFO L93 Difference]: Finished difference Result 82225 states and 102501 transitions. [2020-10-26 23:03:19,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:03:19,099 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-10-26 23:03:19,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:03:19,215 INFO L225 Difference]: With dead ends: 82225 [2020-10-26 23:03:19,215 INFO L226 Difference]: Without dead ends: 43106 [2020-10-26 23:03:19,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:03:19,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43106 states. [2020-10-26 23:03:20,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43106 to 39899. [2020-10-26 23:03:20,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39899 states. [2020-10-26 23:03:20,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39899 states to 39899 states and 48212 transitions. [2020-10-26 23:03:20,424 INFO L78 Accepts]: Start accepts. Automaton has 39899 states and 48212 transitions. Word has length 275 [2020-10-26 23:03:20,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:03:20,425 INFO L481 AbstractCegarLoop]: Abstraction has 39899 states and 48212 transitions. [2020-10-26 23:03:20,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:03:20,425 INFO L276 IsEmpty]: Start isEmpty. Operand 39899 states and 48212 transitions. [2020-10-26 23:03:20,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-26 23:03:20,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:03:20,435 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:03:20,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:03:20,436 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:03:20,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:03:20,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1516209682, now seen corresponding path program 1 times [2020-10-26 23:03:20,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:03:20,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983324690] [2020-10-26 23:03:20,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:03:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:03:20,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:03:20,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:03:21,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:03:23,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:03:23,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-26 23:03:23,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:03:23,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2622 [2020-10-26 23:03:23,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:03:23,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:03:23,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-26 23:03:23,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 23:03:23,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:03:23,342 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:03:23,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:03:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:03:23,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:03:23,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:03:23,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:03:23,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:03:23,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:03:23,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:03:23,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:03:23,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:03:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:03:23,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:03:23,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:03:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:03:23,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:03:23,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:03:23,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:03:23,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:03:23,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-26 23:03:23,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:03:23,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:03:23,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:03:23,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-26 23:03:23,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:03:23,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 23:03:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:03:23,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:03:23,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:03:23,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:03:23,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-26 23:03:23,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:03:23,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-26 23:03:23,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:03:23,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:03:23,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:03:23,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-26 23:03:23,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:03:24,005 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 114 proven. 29 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:03:24,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983324690] [2020-10-26 23:03:24,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:03:24,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:03:24,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725283087] [2020-10-26 23:03:24,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:03:24,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:03:24,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:03:24,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:03:24,015 INFO L87 Difference]: Start difference. First operand 39899 states and 48212 transitions. Second operand 6 states. [2020-10-26 23:03:46,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:03:46,834 INFO L93 Difference]: Finished difference Result 99816 states and 125253 transitions. [2020-10-26 23:03:46,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:03:46,835 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 276 [2020-10-26 23:03:46,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:03:46,992 INFO L225 Difference]: With dead ends: 99816 [2020-10-26 23:03:46,992 INFO L226 Difference]: Without dead ends: 60690 [2020-10-26 23:03:47,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:03:47,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60690 states. [2020-10-26 23:03:48,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60690 to 58961. [2020-10-26 23:03:48,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58961 states. [2020-10-26 23:03:48,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58961 states to 58961 states and 70805 transitions. [2020-10-26 23:03:48,855 INFO L78 Accepts]: Start accepts. Automaton has 58961 states and 70805 transitions. Word has length 276 [2020-10-26 23:03:48,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:03:48,856 INFO L481 AbstractCegarLoop]: Abstraction has 58961 states and 70805 transitions. [2020-10-26 23:03:48,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:03:48,856 INFO L276 IsEmpty]: Start isEmpty. Operand 58961 states and 70805 transitions. [2020-10-26 23:03:48,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-26 23:03:48,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:03:48,870 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:03:48,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:03:48,870 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:03:48,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:03:48,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1387230740, now seen corresponding path program 1 times [2020-10-26 23:03:48,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:03:48,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140754272] [2020-10-26 23:03:48,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:03:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:03:49,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:03:49,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:03:49,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-26 23:03:49,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:03:49,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 790 [2020-10-26 23:03:49,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:03:49,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:03:49,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-26 23:03:49,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-26 23:03:49,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:03:49,963 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:03:49,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:03:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:03:49,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:03:49,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:03:49,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:03:49,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:03:49,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:03:49,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:03:49,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:03:49,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:03:49,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:03:49,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:03:50,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:03:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:03:50,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:03:50,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:03:50,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:03:50,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:03:50,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 23:03:50,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:03:50,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:03:50,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:03:50,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:03:50,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:03:50,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 23:03:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:03:50,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:03:50,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:03:50,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-26 23:03:50,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:03:50,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-26 23:03:50,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:03:50,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:03:50,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:03:50,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 23:03:50,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:03:50,493 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-26 23:03:50,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140754272] [2020-10-26 23:03:50,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:03:50,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:03:50,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716243029] [2020-10-26 23:03:50,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:03:50,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:03:50,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:03:50,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:03:50,497 INFO L87 Difference]: Start difference. First operand 58961 states and 70805 transitions. Second operand 5 states. [2020-10-26 23:03:52,648 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 66