/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:04:48,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:04:48,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:04:48,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:04:48,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:04:48,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:04:48,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:04:48,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:04:48,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:04:48,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:04:48,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:04:48,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:04:48,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:04:48,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:04:48,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:04:48,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:04:48,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:04:48,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:04:48,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:04:48,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:04:48,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:04:48,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:04:48,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:04:48,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:04:48,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:04:48,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:04:48,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:04:48,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:04:48,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:04:48,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:04:48,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:04:48,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:04:48,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:04:48,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:04:48,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:04:48,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:04:48,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:04:48,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:04:48,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:04:48,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:04:48,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:04:48,784 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 [2020-10-29 07:04:48,815 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:04:48,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:04:48,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:04:48,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:04:48,818 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:04:48,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:04:48,819 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:04:48,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:04:48,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:04:48,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:04:48,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:04:48,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:04:48,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:04:48,821 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:04:48,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:04:48,821 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:04:48,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:04:48,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:04:48,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:04:48,822 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:04:48,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:04:48,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:04:48,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:04:48,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:04:48,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:04:48,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:04:48,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:04:48,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:04:48,824 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:04:48,825 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:04:49,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:04:49,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:04:49,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:04:49,327 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:04:49,327 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:04:49,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label44.c [2020-10-29 07:04:49,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24b847e08/958c17bbb8ef4b1caa7333d20c2691dd/FLAGb5df31c3b [2020-10-29 07:04:50,593 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:04:50,594 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label44.c [2020-10-29 07:04:50,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24b847e08/958c17bbb8ef4b1caa7333d20c2691dd/FLAGb5df31c3b [2020-10-29 07:04:51,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24b847e08/958c17bbb8ef4b1caa7333d20c2691dd [2020-10-29 07:04:51,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:04:51,081 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:04:51,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:04:51,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:04:51,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:04:51,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:04:51" (1/1) ... [2020-10-29 07:04:51,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71a5f09b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:51, skipping insertion in model container [2020-10-29 07:04:51,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:04:51" (1/1) ... [2020-10-29 07:04:51,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:04:51,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:04:52,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:04:52,746 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:04:53,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:04:53,627 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:04:53,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:53 WrapperNode [2020-10-29 07:04:53,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:04:53,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:04:53,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:04:53,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:04:53,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:53" (1/1) ... [2020-10-29 07:04:53,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:53" (1/1) ... [2020-10-29 07:04:53,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:53" (1/1) ... [2020-10-29 07:04:53,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:53" (1/1) ... [2020-10-29 07:04:53,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:53" (1/1) ... [2020-10-29 07:04:53,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:53" (1/1) ... [2020-10-29 07:04:53,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:53" (1/1) ... [2020-10-29 07:04:53,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:04:53,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:04:53,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:04:53,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:04:53,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:53" (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 [2020-10-29 07:04:54,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:04:54,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:04:54,046 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:04:54,046 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:04:54,046 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:04:54,046 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:04:54,047 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:04:54,047 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:04:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:04:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:04:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:04:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:04:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:04:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:04:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:04:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:04:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:04:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:04:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:04:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:04:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:04:54,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:04:54,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:04:54,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:04:54,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:04:59,152 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:04:59,153 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:04:59,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:04:59 BoogieIcfgContainer [2020-10-29 07:04:59,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:04:59,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:04:59,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:04:59,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:04:59,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:04:51" (1/3) ... [2020-10-29 07:04:59,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42bde492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:04:59, skipping insertion in model container [2020-10-29 07:04:59,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:04:53" (2/3) ... [2020-10-29 07:04:59,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42bde492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:04:59, skipping insertion in model container [2020-10-29 07:04:59,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:04:59" (3/3) ... [2020-10-29 07:04:59,175 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label44.c [2020-10-29 07:04:59,188 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:04:59,195 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:04:59,213 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:04:59,266 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:04:59,266 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:04:59,269 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:04:59,269 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:04:59,270 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:04:59,270 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:04:59,270 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:04:59,270 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:04:59,308 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 07:04:59,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 07:04:59,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:04:59,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:04:59,319 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:04:59,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:04:59,327 INFO L82 PathProgramCache]: Analyzing trace with hash 213979348, now seen corresponding path program 1 times [2020-10-29 07:04:59,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:04:59,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46961930] [2020-10-29 07:04:59,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:04:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:59,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:00,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:00,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 07:05:00,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:00,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 581 [2020-10-29 07:05:00,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:00,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:00,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:05:00,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:05:00,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 07:05:00,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:05:00,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:05:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:00,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:00,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:00,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:05:00,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:00,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:05:00,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:00,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:00,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:05:00,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:05:00,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:05:00,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:05:00,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:05:00,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46961930] [2020-10-29 07:05:00,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:05:00,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 07:05:00,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389948519] [2020-10-29 07:05:00,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:05:00,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:05:00,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:05:00,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:05:00,521 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-29 07:05:12,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:05:12,124 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-29 07:05:12,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:05:12,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-29 07:05:12,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:05:12,160 INFO L225 Difference]: With dead ends: 2476 [2020-10-29 07:05:12,160 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 07:05:12,176 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 [2020-10-29 07:05:12,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 07:05:12,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-29 07:05:12,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-29 07:05:12,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2522 transitions. [2020-10-29 07:05:12,369 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2522 transitions. Word has length 57 [2020-10-29 07:05:12,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:05:12,371 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2522 transitions. [2020-10-29 07:05:12,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:05:12,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2522 transitions. [2020-10-29 07:05:12,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-29 07:05:12,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:05:12,390 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:05:12,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:05:12,393 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:05:12,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:05:12,395 INFO L82 PathProgramCache]: Analyzing trace with hash -2013224363, now seen corresponding path program 1 times [2020-10-29 07:05:12,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:05:12,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258601742] [2020-10-29 07:05:12,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:05:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:12,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:12,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:13,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:14,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:14,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 07:05:14,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:05:14,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1807 [2020-10-29 07:05:14,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:14,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:14,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:05:14,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:05:14,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 07:05:14,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 07:05:14,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:05:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:14,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:14,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:14,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:05:14,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:14,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:05:14,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:14,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:14,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:05:14,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:05:14,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:05:14,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 07:05:14,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:05:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:14,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:14,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:14,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:05:14,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:14,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-29 07:05:14,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:14,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:14,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:05:14,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:05:14,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:05:14,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:05:14,912 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:05:14,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258601742] [2020-10-29 07:05:14,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:05:14,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:05:14,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061913455] [2020-10-29 07:05:14,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:05:14,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:05:14,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:05:14,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:05:14,920 INFO L87 Difference]: Start difference. First operand 1554 states and 2522 transitions. Second operand 6 states. [2020-10-29 07:05:27,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:05:27,169 INFO L93 Difference]: Finished difference Result 4722 states and 7726 transitions. [2020-10-29 07:05:27,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:05:27,170 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2020-10-29 07:05:27,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:05:27,198 INFO L225 Difference]: With dead ends: 4722 [2020-10-29 07:05:27,199 INFO L226 Difference]: Without dead ends: 3174 [2020-10-29 07:05:27,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:05:27,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2020-10-29 07:05:27,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 3148. [2020-10-29 07:05:27,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3148 states. [2020-10-29 07:05:27,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 4487 transitions. [2020-10-29 07:05:27,347 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 4487 transitions. Word has length 132 [2020-10-29 07:05:27,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:05:27,351 INFO L481 AbstractCegarLoop]: Abstraction has 3148 states and 4487 transitions. [2020-10-29 07:05:27,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:05:27,351 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 4487 transitions. [2020-10-29 07:05:27,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-29 07:05:27,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:05:27,356 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:05:27,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:05:27,357 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:05:27,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:05:27,358 INFO L82 PathProgramCache]: Analyzing trace with hash -879723939, now seen corresponding path program 1 times [2020-10-29 07:05:27,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:05:27,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666256160] [2020-10-29 07:05:27,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:05:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:27,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:27,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:28,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:28,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 07:05:28,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:05:28,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1434 [2020-10-29 07:05:28,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:28,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:28,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:05:28,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:05:28,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:05:28,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:05:28,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:05:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:28,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:29,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:29,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:05:29,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:29,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:05:29,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:29,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:05:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:05:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:05:29,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:05:29,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:05:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:29,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:29,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:29,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:05:29,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:29,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 07:05:29,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:29,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:29,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:05:29,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:05:29,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:05:29,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:05:29,309 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:05:29,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666256160] [2020-10-29 07:05:29,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:05:29,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:05:29,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54861239] [2020-10-29 07:05:29,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:05:29,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:05:29,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:05:29,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:05:29,312 INFO L87 Difference]: Start difference. First operand 3148 states and 4487 transitions. Second operand 7 states. [2020-10-29 07:05:44,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:05:44,894 INFO L93 Difference]: Finished difference Result 9684 states and 14059 transitions. [2020-10-29 07:05:44,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:05:44,896 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-10-29 07:05:44,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:05:44,940 INFO L225 Difference]: With dead ends: 9684 [2020-10-29 07:05:44,940 INFO L226 Difference]: Without dead ends: 6542 [2020-10-29 07:05:44,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:05:44,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6542 states. [2020-10-29 07:05:45,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6542 to 6433. [2020-10-29 07:05:45,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6433 states. [2020-10-29 07:05:45,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6433 states to 6433 states and 8673 transitions. [2020-10-29 07:05:45,214 INFO L78 Accepts]: Start accepts. Automaton has 6433 states and 8673 transitions. Word has length 136 [2020-10-29 07:05:45,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:05:45,215 INFO L481 AbstractCegarLoop]: Abstraction has 6433 states and 8673 transitions. [2020-10-29 07:05:45,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:05:45,215 INFO L276 IsEmpty]: Start isEmpty. Operand 6433 states and 8673 transitions. [2020-10-29 07:05:45,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-29 07:05:45,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:05:45,219 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:05:45,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:05:45,219 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:05:45,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:05:45,220 INFO L82 PathProgramCache]: Analyzing trace with hash -184312159, now seen corresponding path program 1 times [2020-10-29 07:05:45,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:05:45,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933285764] [2020-10-29 07:05:45,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:05:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:45,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:45,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:46,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:46,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-29 07:05:46,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:05:46,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1397 [2020-10-29 07:05:46,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:46,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:46,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:05:46,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:05:46,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 07:05:46,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:05:46,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:05:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:46,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:46,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:46,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:05:46,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:46,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 07:05:46,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:46,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:46,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:05:46,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:05:46,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:05:46,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:05:46,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:05:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:05:46,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:05:47,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:05:47,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 07:05:47,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:05:47,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-29 07:05:47,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:05:47,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:05:47,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:05:47,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:05:47,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:05:47,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:05:47,326 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:05:47,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933285764] [2020-10-29 07:05:47,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:05:47,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:05:47,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545537933] [2020-10-29 07:05:47,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:05:47,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:05:47,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:05:47,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:05:47,335 INFO L87 Difference]: Start difference. First operand 6433 states and 8673 transitions. Second operand 7 states. [2020-10-29 07:06:03,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:06:03,250 INFO L93 Difference]: Finished difference Result 19803 states and 27733 transitions. [2020-10-29 07:06:03,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:06:03,252 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-10-29 07:06:03,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:06:03,364 INFO L225 Difference]: With dead ends: 19803 [2020-10-29 07:06:03,364 INFO L226 Difference]: Without dead ends: 13376 [2020-10-29 07:06:03,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:06:03,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13376 states. [2020-10-29 07:06:03,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13376 to 13205. [2020-10-29 07:06:03,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13205 states. [2020-10-29 07:06:04,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13205 states to 13205 states and 17629 transitions. [2020-10-29 07:06:04,009 INFO L78 Accepts]: Start accepts. Automaton has 13205 states and 17629 transitions. Word has length 170 [2020-10-29 07:06:04,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:06:04,011 INFO L481 AbstractCegarLoop]: Abstraction has 13205 states and 17629 transitions. [2020-10-29 07:06:04,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:06:04,011 INFO L276 IsEmpty]: Start isEmpty. Operand 13205 states and 17629 transitions. [2020-10-29 07:06:04,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-29 07:06:04,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:06:04,018 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-29 07:06:04,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:06:04,019 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:06:04,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:06:04,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1985366106, now seen corresponding path program 1 times [2020-10-29 07:06:04,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:06:04,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782191898] [2020-10-29 07:06:04,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:06:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:04,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:04,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:04,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:05,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:05,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-29 07:06:05,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:06:05,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1882 [2020-10-29 07:06:05,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:05,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:05,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:06:05,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:06:05,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 07:06:05,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:06:06,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:06:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:06,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:06,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:06,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:06:06,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:06,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:06:06,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:06,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:06,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:06:06,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:06:06,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:06:06,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:06:06,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:06:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:06,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:06,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:06,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:06:06,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:06,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 07:06:06,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:06,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:06,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:06:06,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:06:06,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:06:06,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:06,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 07:06:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:06,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:06,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:06,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 07:06:06,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:06,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-29 07:06:06,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:06,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:06,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:06:06,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:06:06,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 07:06:06,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:06,912 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:06:06,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782191898] [2020-10-29 07:06:06,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:06:06,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:06:06,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506131314] [2020-10-29 07:06:06,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:06:06,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:06:06,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:06:06,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:06:06,916 INFO L87 Difference]: Start difference. First operand 13205 states and 17629 transitions. Second operand 7 states. [2020-10-29 07:06:23,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:06:23,827 INFO L93 Difference]: Finished difference Result 33755 states and 47296 transitions. [2020-10-29 07:06:23,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:06:23,829 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2020-10-29 07:06:23,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:06:23,923 INFO L225 Difference]: With dead ends: 33755 [2020-10-29 07:06:23,923 INFO L226 Difference]: Without dead ends: 20556 [2020-10-29 07:06:23,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:06:23,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20556 states. [2020-10-29 07:06:24,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20556 to 20383. [2020-10-29 07:06:24,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20383 states. [2020-10-29 07:06:24,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20383 states to 20383 states and 26974 transitions. [2020-10-29 07:06:24,717 INFO L78 Accepts]: Start accepts. Automaton has 20383 states and 26974 transitions. Word has length 252 [2020-10-29 07:06:24,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:06:24,717 INFO L481 AbstractCegarLoop]: Abstraction has 20383 states and 26974 transitions. [2020-10-29 07:06:24,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:06:24,718 INFO L276 IsEmpty]: Start isEmpty. Operand 20383 states and 26974 transitions. [2020-10-29 07:06:24,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-29 07:06:24,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:06:24,724 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-29 07:06:24,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:06:24,725 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:06:24,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:06:24,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1768246318, now seen corresponding path program 1 times [2020-10-29 07:06:24,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:06:24,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276629580] [2020-10-29 07:06:24,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:06:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:24,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:24,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:25,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:26,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:26,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-29 07:06:26,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:06:26,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1511 [2020-10-29 07:06:26,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:26,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:26,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:06:26,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:06:26,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 07:06:26,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:26,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:06:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:26,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:26,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:26,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:06:26,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:26,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:06:26,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:26,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:26,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:06:26,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:06:26,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:06:26,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:26,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:06:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:26,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:26,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:26,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:06:26,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:26,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 07:06:26,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:26,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:26,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:06:26,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:06:26,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:06:26,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:26,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 07:06:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:26,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:26,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:26,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 07:06:26,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:26,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-29 07:06:26,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:26,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:26,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:06:26,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:06:26,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 07:06:26,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:06:27,217 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:06:27,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276629580] [2020-10-29 07:06:27,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:06:27,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:06:27,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474714121] [2020-10-29 07:06:27,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:06:27,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:06:27,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:06:27,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:06:27,223 INFO L87 Difference]: Start difference. First operand 20383 states and 26974 transitions. Second operand 7 states. [2020-10-29 07:06:50,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:06:50,008 INFO L93 Difference]: Finished difference Result 58846 states and 82217 transitions. [2020-10-29 07:06:50,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:06:50,010 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2020-10-29 07:06:50,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:06:50,148 INFO L225 Difference]: With dead ends: 58846 [2020-10-29 07:06:50,148 INFO L226 Difference]: Without dead ends: 31184 [2020-10-29 07:06:50,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:06:50,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31184 states. [2020-10-29 07:06:51,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31184 to 30814. [2020-10-29 07:06:51,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30814 states. [2020-10-29 07:06:51,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30814 states to 30814 states and 37823 transitions. [2020-10-29 07:06:51,333 INFO L78 Accepts]: Start accepts. Automaton has 30814 states and 37823 transitions. Word has length 256 [2020-10-29 07:06:51,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:06:51,333 INFO L481 AbstractCegarLoop]: Abstraction has 30814 states and 37823 transitions. [2020-10-29 07:06:51,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:06:51,334 INFO L276 IsEmpty]: Start isEmpty. Operand 30814 states and 37823 transitions. [2020-10-29 07:06:51,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-29 07:06:51,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:06:51,339 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:06:51,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:06:51,339 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:06:51,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:06:51,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1299583809, now seen corresponding path program 1 times [2020-10-29 07:06:51,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:06:51,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560914445] [2020-10-29 07:06:51,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:06:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:51,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:51,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:53,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:53,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-29 07:06:53,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:06:53,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2072 [2020-10-29 07:06:53,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:53,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:53,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:06:53,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:06:53,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-29 07:06:53,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:06:53,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:06:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:53,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:53,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:53,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:06:53,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:53,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:06:53,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:53,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:53,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:06:53,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:06:53,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:06:53,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:53,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:06:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:53,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:54,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:54,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-29 07:06:54,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:54,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-29 07:06:54,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:54,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:06:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:06:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-29 07:06:54,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:54,367 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:06:54,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560914445] [2020-10-29 07:06:54,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:06:54,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:06:54,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538666409] [2020-10-29 07:06:54,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:06:54,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:06:54,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:06:54,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:06:54,371 INFO L87 Difference]: Start difference. First operand 30814 states and 37823 transitions. Second operand 7 states. [2020-10-29 07:07:10,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:07:10,657 INFO L93 Difference]: Finished difference Result 77763 states and 99698 transitions. [2020-10-29 07:07:10,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:07:10,658 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-10-29 07:07:10,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:07:10,823 INFO L225 Difference]: With dead ends: 77763 [2020-10-29 07:07:10,823 INFO L226 Difference]: Without dead ends: 46959 [2020-10-29 07:07:10,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:07:10,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46959 states. [2020-10-29 07:07:12,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46959 to 45175. [2020-10-29 07:07:12,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45175 states. [2020-10-29 07:07:12,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45175 states to 45175 states and 54184 transitions. [2020-10-29 07:07:12,403 INFO L78 Accepts]: Start accepts. Automaton has 45175 states and 54184 transitions. Word has length 255 [2020-10-29 07:07:12,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:07:12,405 INFO L481 AbstractCegarLoop]: Abstraction has 45175 states and 54184 transitions. [2020-10-29 07:07:12,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:07:12,405 INFO L276 IsEmpty]: Start isEmpty. Operand 45175 states and 54184 transitions. [2020-10-29 07:07:12,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-29 07:07:12,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:07:12,413 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:07:12,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:07:12,414 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:07:12,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:07:12,414 INFO L82 PathProgramCache]: Analyzing trace with hash -739565308, now seen corresponding path program 1 times [2020-10-29 07:07:12,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:07:12,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66127827] [2020-10-29 07:07:12,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:07:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:12,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:13,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:14,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:14,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:14,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-29 07:07:14,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:07:14,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1734 [2020-10-29 07:07:14,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:14,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:07:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 07:07:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-29 07:07:14,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:07:14,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:07:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:14,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:14,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:14,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:07:14,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:14,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:07:14,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:14,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:14,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:07:14,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:14,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:07:14,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:14,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:07:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:14,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:14,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:14,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:07:14,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:14,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-29 07:07:14,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:14,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:14,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:07:14,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:14,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:07:14,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:14,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:07:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:14,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:14,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:14,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:14,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:07:14,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:07:14,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-29 07:07:14,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:14,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:14,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:07:14,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:07:14,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:07:14,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:15,160 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 133 proven. 49 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:07:15,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66127827] [2020-10-29 07:07:15,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:07:15,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:07:15,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074834050] [2020-10-29 07:07:15,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:07:15,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:07:15,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:07:15,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:07:15,163 INFO L87 Difference]: Start difference. First operand 45175 states and 54184 transitions. Second operand 7 states. [2020-10-29 07:07:40,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:07:40,634 INFO L93 Difference]: Finished difference Result 110500 states and 135292 transitions. [2020-10-29 07:07:40,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:07:40,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2020-10-29 07:07:40,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:07:40,846 INFO L225 Difference]: With dead ends: 110500 [2020-10-29 07:07:40,846 INFO L226 Difference]: Without dead ends: 65331 [2020-10-29 07:07:40,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:07:40,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65331 states. [2020-10-29 07:07:42,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65331 to 63651. [2020-10-29 07:07:42,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63651 states. [2020-10-29 07:07:43,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63651 states to 63651 states and 77218 transitions. [2020-10-29 07:07:43,230 INFO L78 Accepts]: Start accepts. Automaton has 63651 states and 77218 transitions. Word has length 291 [2020-10-29 07:07:43,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:07:43,231 INFO L481 AbstractCegarLoop]: Abstraction has 63651 states and 77218 transitions. [2020-10-29 07:07:43,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:07:43,232 INFO L276 IsEmpty]: Start isEmpty. Operand 63651 states and 77218 transitions. [2020-10-29 07:07:43,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-29 07:07:43,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:07:43,240 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:07:43,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:07:43,241 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:07:43,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:07:43,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1054391812, now seen corresponding path program 1 times [2020-10-29 07:07:43,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:07:43,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229091997] [2020-10-29 07:07:43,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:07:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:43,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:43,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:45,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:45,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-29 07:07:45,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:07:45,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2580 [2020-10-29 07:07:45,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:45,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:45,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:07:45,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-29 07:07:45,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 07:07:45,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:46,158 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:07:46,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:07:46,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:46,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:46,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:46,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:07:46,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:46,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:07:46,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:46,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:07:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:07:46,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:46,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:07:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:46,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:46,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:46,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:07:46,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:46,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-29 07:07:46,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:46,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:46,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:07:46,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:46,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 07:07:46,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:46,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 07:07:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:46,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:46,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:46,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:07:46,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:46,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-29 07:07:46,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:46,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:46,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:07:46,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:07:46,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:07:46,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:46,906 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:07:46,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229091997] [2020-10-29 07:07:46,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:07:46,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:07:46,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746003118] [2020-10-29 07:07:46,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:07:46,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:07:46,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:07:46,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:07:46,917 INFO L87 Difference]: Start difference. First operand 63651 states and 77218 transitions. Second operand 7 states. [2020-10-29 07:08:12,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:08:12,002 INFO L93 Difference]: Finished difference Result 157430 states and 205251 transitions. [2020-10-29 07:08:12,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:08:12,008 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 295 [2020-10-29 07:08:12,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:08:12,711 INFO L225 Difference]: With dead ends: 157430 [2020-10-29 07:08:12,711 INFO L226 Difference]: Without dead ends: 93785 [2020-10-29 07:08:12,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:08:12,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93785 states. [2020-10-29 07:08:15,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93785 to 93120. [2020-10-29 07:08:15,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93120 states. [2020-10-29 07:08:16,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93120 states to 93120 states and 111921 transitions. [2020-10-29 07:08:16,444 INFO L78 Accepts]: Start accepts. Automaton has 93120 states and 111921 transitions. Word has length 295 [2020-10-29 07:08:16,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:08:16,445 INFO L481 AbstractCegarLoop]: Abstraction has 93120 states and 111921 transitions. [2020-10-29 07:08:16,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:08:16,445 INFO L276 IsEmpty]: Start isEmpty. Operand 93120 states and 111921 transitions. [2020-10-29 07:08:16,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-10-29 07:08:16,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:08:16,657 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:08:16,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:08:16,658 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:08:16,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:08:16,660 INFO L82 PathProgramCache]: Analyzing trace with hash -918602271, now seen corresponding path program 1 times [2020-10-29 07:08:16,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:08:16,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434508600] [2020-10-29 07:08:16,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:08:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:17,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:17,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:18,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:21,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:21,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 477 [2020-10-29 07:08:21,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:08:21,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 07:08:21,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:21,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:21,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:08:21,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-29 07:08:21,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 07:08:21,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:08:22,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:08:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:22,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:22,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:22,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:08:22,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:22,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:08:22,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:22,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:22,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:08:22,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:22,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:08:22,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:08:22,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:08:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:22,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:22,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:22,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:08:22,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:22,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 07:08:22,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:22,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:08:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-29 07:08:22,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:08:22,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-29 07:08:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:22,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:22,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:22,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 07:08:22,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:22,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-29 07:08:22,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:22,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:22,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:08:22,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:08:22,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-29 07:08:22,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:08:23,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-10-29 07:08:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:23,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:23,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:23,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:08:23,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:23,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 07:08:23,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:23,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:23,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:08:23,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-29 07:08:23,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:08:23,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:08:23,495 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 296 proven. 88 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-29 07:08:23,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434508600] [2020-10-29 07:08:23,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:08:23,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:08:23,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394704803] [2020-10-29 07:08:23,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:08:23,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:08:23,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:08:23,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:08:23,498 INFO L87 Difference]: Start difference. First operand 93120 states and 111921 transitions. Second operand 7 states.