/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/Problem04_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:17:13,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:17:13,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:17:13,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:17:13,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:17:13,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:17:13,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:17:13,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:17:13,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:17:14,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:17:14,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:17:14,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:17:14,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:17:14,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:17:14,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:17:14,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:17:14,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:17:14,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:17:14,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:17:14,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:17:14,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:17:14,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:17:14,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:17:14,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:17:14,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:17:14,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:17:14,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:17:14,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:17:14,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:17:14,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:17:14,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:17:14,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:17:14,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:17:14,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:17:14,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:17:14,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:17:14,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:17:14,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:17:14,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:17:14,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:17:14,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:17:14,070 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 05:17:14,119 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:17:14,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:17:14,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:17:14,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:17:14,139 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:17:14,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:17:14,140 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:17:14,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:17:14,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:17:14,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:17:14,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:17:14,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:17:14,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:17:14,143 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:17:14,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:17:14,143 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:17:14,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:17:14,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:17:14,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:17:14,145 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:17:14,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:17:14,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:17:14,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:17:14,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:17:14,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:17:14,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:17:14,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:17:14,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:17:14,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:17:14,147 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:17:14,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:17:14,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:17:14,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:17:14,620 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:17:14,620 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:17:14,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label57.c [2020-10-29 05:17:14,691 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb7fe8b0a/b233d3d07e484ea5b2e5ccfd53125c03/FLAG484ae78b2 [2020-10-29 05:17:15,693 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:17:15,694 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label57.c [2020-10-29 05:17:15,732 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb7fe8b0a/b233d3d07e484ea5b2e5ccfd53125c03/FLAG484ae78b2 [2020-10-29 05:17:16,181 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb7fe8b0a/b233d3d07e484ea5b2e5ccfd53125c03 [2020-10-29 05:17:16,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:17:16,190 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:17:16,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:17:16,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:17:16,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:17:16,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:17:16" (1/1) ... [2020-10-29 05:17:16,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc501ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:17:16, skipping insertion in model container [2020-10-29 05:17:16,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:17:16" (1/1) ... [2020-10-29 05:17:16,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:17:16,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:17:17,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:17:17,827 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:17:18,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:17:18,568 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:17:18,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:17:18 WrapperNode [2020-10-29 05:17:18,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:17:18,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:17:18,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:17:18,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:17:18,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:17:18" (1/1) ... [2020-10-29 05:17:18,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:17:18" (1/1) ... [2020-10-29 05:17:18,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:17:18" (1/1) ... [2020-10-29 05:17:18,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:17:18" (1/1) ... [2020-10-29 05:17:18,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:17:18" (1/1) ... [2020-10-29 05:17:18,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:17:18" (1/1) ... [2020-10-29 05:17:18,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:17:18" (1/1) ... [2020-10-29 05:17:18,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:17:18,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:17:18,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:17:18,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:17:18,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:17:18" (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 05:17:18,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:17:18,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:17:18,918 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:17:18,918 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:17:18,918 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:17:18,918 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:17:18,919 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:17:18,919 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:17:18,919 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:17:18,919 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:17:18,919 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:17:18,919 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:17:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:17:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:17:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:17:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:17:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:17:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:17:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:17:18,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:17:18,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:17:18,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:17:18,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:17:18,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:17:18,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:17:23,842 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:17:23,844 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:17:23,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:17:23 BoogieIcfgContainer [2020-10-29 05:17:23,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:17:23,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:17:23,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:17:23,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:17:23,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:17:16" (1/3) ... [2020-10-29 05:17:23,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46aab9ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:17:23, skipping insertion in model container [2020-10-29 05:17:23,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:17:18" (2/3) ... [2020-10-29 05:17:23,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46aab9ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:17:23, skipping insertion in model container [2020-10-29 05:17:23,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:17:23" (3/3) ... [2020-10-29 05:17:23,856 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label57.c [2020-10-29 05:17:23,868 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:17:23,873 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:17:23,886 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:17:23,919 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:17:23,919 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:17:23,920 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:17:23,920 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:17:23,920 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:17:23,920 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:17:23,920 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:17:23,920 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:17:23,956 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-29 05:17:24,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2020-10-29 05:17:24,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:17:24,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:17:24,025 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:17:24,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:17:24,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1896348392, now seen corresponding path program 1 times [2020-10-29 05:17:24,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:17:24,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287462124] [2020-10-29 05:17:24,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:17:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:25,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:28,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:29,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:29,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 823 [2020-10-29 05:17:29,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:17:29,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5127 [2020-10-29 05:17:29,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:29,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:17:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:17:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 814 [2020-10-29 05:17:29,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 05:17:30,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:17:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:30,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:30,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:30,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:17:30,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:30,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 05:17:30,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:30,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:30,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:17:30,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:30,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:17:30,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:32,133 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 05:17:32,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287462124] [2020-10-29 05:17:32,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:17:32,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 05:17:32,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363843564] [2020-10-29 05:17:32,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:17:32,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:17:32,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:17:32,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:17:32,161 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 5 states. [2020-10-29 05:17:41,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:17:41,203 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-29 05:17:41,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:17:41,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 807 [2020-10-29 05:17:41,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:17:41,243 INFO L225 Difference]: With dead ends: 2677 [2020-10-29 05:17:41,243 INFO L226 Difference]: Without dead ends: 1703 [2020-10-29 05:17:41,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:17:41,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-29 05:17:41,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-29 05:17:41,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-29 05:17:41,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 3006 transitions. [2020-10-29 05:17:41,424 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 3006 transitions. Word has length 807 [2020-10-29 05:17:41,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:17:41,427 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 3006 transitions. [2020-10-29 05:17:41,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:17:41,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 3006 transitions. [2020-10-29 05:17:41,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2020-10-29 05:17:41,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:17:41,464 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:17:41,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:17:41,465 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:17:41,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:17:41,466 INFO L82 PathProgramCache]: Analyzing trace with hash 371016902, now seen corresponding path program 1 times [2020-10-29 05:17:41,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:17:41,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275778021] [2020-10-29 05:17:41,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:17:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:41,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:42,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:45,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:46,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:46,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 833 [2020-10-29 05:17:46,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:17:46,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-29 05:17:46,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:46,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:46,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:17:46,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:17:46,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 786 [2020-10-29 05:17:46,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 05:17:47,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:17:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:47,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:47,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:47,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:17:47,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:47,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:17:47,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:47,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:47,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:17:47,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:47,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:17:47,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:47,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:17:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:47,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:47,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:47,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:17:47,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:47,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:17:47,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:47,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:47,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:17:47,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:47,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:17:47,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:51,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:17:51,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275778021] [2020-10-29 05:17:51,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:17:51,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:17:51,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608326875] [2020-10-29 05:17:51,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:17:51,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:17:51,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:17:51,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:17:51,331 INFO L87 Difference]: Start difference. First operand 1690 states and 3006 transitions. Second operand 5 states. [2020-10-29 05:17:51,542 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-29 05:18:01,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:18:01,319 INFO L93 Difference]: Finished difference Result 4173 states and 7578 transitions. [2020-10-29 05:18:01,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:18:01,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 815 [2020-10-29 05:18:01,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:18:01,333 INFO L225 Difference]: With dead ends: 4173 [2020-10-29 05:18:01,333 INFO L226 Difference]: Without dead ends: 1703 [2020-10-29 05:18:01,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:18:01,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-29 05:18:01,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-29 05:18:01,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-29 05:18:01,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2135 transitions. [2020-10-29 05:18:01,407 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2135 transitions. Word has length 815 [2020-10-29 05:18:01,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:18:01,408 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 2135 transitions. [2020-10-29 05:18:01,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:18:01,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2135 transitions. [2020-10-29 05:18:01,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2020-10-29 05:18:01,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:18:01,420 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:18:01,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:18:01,421 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:18:01,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:18:01,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1428626031, now seen corresponding path program 1 times [2020-10-29 05:18:01,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:18:01,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792016024] [2020-10-29 05:18:01,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:18:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:01,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:01,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:06,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:06,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 856 [2020-10-29 05:18:06,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:18:06,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-29 05:18:06,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:06,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:06,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:18:06,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 05:18:06,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 516 [2020-10-29 05:18:06,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:18:08,598 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2020-10-29 05:18:09,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:18:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:09,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:09,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:09,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:18:09,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:09,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:18:09,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:09,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:09,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:18:09,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:09,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:18:09,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:09,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:18:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:09,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:09,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:09,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 05:18:09,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:09,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 05:18:09,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:09,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:09,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:18:09,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:09,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 05:18:09,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:13,986 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:18:13,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792016024] [2020-10-29 05:18:13,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:18:13,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 05:18:13,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005136432] [2020-10-29 05:18:13,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 05:18:13,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:18:13,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 05:18:13,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:18:13,990 INFO L87 Difference]: Start difference. First operand 1690 states and 2135 transitions. Second operand 17 states. [2020-10-29 05:18:14,491 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 05:18:15,679 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 05:18:17,660 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-29 05:18:17,826 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 05:18:19,000 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-29 05:18:19,279 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-29 05:18:20,157 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 05:18:21,408 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-29 05:18:21,582 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 05:18:22,053 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 05:18:23,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:18:23,802 INFO L93 Difference]: Finished difference Result 3896 states and 4973 transitions. [2020-10-29 05:18:23,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 05:18:23,802 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 838 [2020-10-29 05:18:23,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:18:23,815 INFO L225 Difference]: With dead ends: 3896 [2020-10-29 05:18:23,815 INFO L226 Difference]: Without dead ends: 2013 [2020-10-29 05:18:23,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2020-10-29 05:18:23,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2020-10-29 05:18:23,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 2009. [2020-10-29 05:18:23,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2009 states. [2020-10-29 05:18:23,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2460 transitions. [2020-10-29 05:18:23,889 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2460 transitions. Word has length 838 [2020-10-29 05:18:23,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:18:23,891 INFO L481 AbstractCegarLoop]: Abstraction has 2009 states and 2460 transitions. [2020-10-29 05:18:23,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 05:18:23,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2460 transitions. [2020-10-29 05:18:23,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2020-10-29 05:18:23,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:18:23,903 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:18:23,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:18:23,904 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:18:23,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:18:23,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1540464914, now seen corresponding path program 1 times [2020-10-29 05:18:23,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:18:23,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867969875] [2020-10-29 05:18:23,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:18:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:24,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:25,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:27,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:29,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:29,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 887 [2020-10-29 05:18:29,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:18:29,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5132 [2020-10-29 05:18:29,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:29,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:29,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:18:29,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 05:18:29,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 811 [2020-10-29 05:18:29,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:18:29,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:18:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:29,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:29,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:29,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:18:29,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:29,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:18:29,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:29,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:29,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:18:29,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:29,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:18:29,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:29,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:18:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:29,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:29,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:29,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 05:18:29,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:29,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 05:18:29,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:29,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:29,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:18:29,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:29,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 05:18:29,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:30,467 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:18:30,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867969875] [2020-10-29 05:18:30,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:18:30,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:18:30,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876440057] [2020-10-29 05:18:30,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:18:30,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:18:30,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:18:30,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:18:30,470 INFO L87 Difference]: Start difference. First operand 2009 states and 2460 transitions. Second operand 5 states. [2020-10-29 05:18:37,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:18:37,057 INFO L93 Difference]: Finished difference Result 5706 states and 7116 transitions. [2020-10-29 05:18:37,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:18:37,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 869 [2020-10-29 05:18:37,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:18:37,078 INFO L225 Difference]: With dead ends: 5706 [2020-10-29 05:18:37,078 INFO L226 Difference]: Without dead ends: 3703 [2020-10-29 05:18:37,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:18:37,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3703 states. [2020-10-29 05:18:37,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3703 to 3699. [2020-10-29 05:18:37,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3699 states. [2020-10-29 05:18:37,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3699 states to 3699 states and 4317 transitions. [2020-10-29 05:18:37,183 INFO L78 Accepts]: Start accepts. Automaton has 3699 states and 4317 transitions. Word has length 869 [2020-10-29 05:18:37,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:18:37,185 INFO L481 AbstractCegarLoop]: Abstraction has 3699 states and 4317 transitions. [2020-10-29 05:18:37,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:18:37,186 INFO L276 IsEmpty]: Start isEmpty. Operand 3699 states and 4317 transitions. [2020-10-29 05:18:37,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2020-10-29 05:18:37,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:18:37,204 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:18:37,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:18:37,204 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:18:37,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:18:37,205 INFO L82 PathProgramCache]: Analyzing trace with hash -2105143758, now seen corresponding path program 1 times [2020-10-29 05:18:37,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:18:37,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201127716] [2020-10-29 05:18:37,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:18:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:37,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:38,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:40,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:42,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:42,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 903 [2020-10-29 05:18:42,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:18:42,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 05:18:42,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:42,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:42,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:18:42,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-29 05:18:42,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 811 [2020-10-29 05:18:42,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:42,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:18:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:42,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:42,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:42,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:18:42,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:42,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:18:42,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:42,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:42,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:18:42,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:42,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:18:42,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:42,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:18:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:42,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:42,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:42,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 05:18:42,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:42,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 05:18:42,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:42,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:42,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:18:42,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:42,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 05:18:42,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:43,620 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 74 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:18:43,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201127716] [2020-10-29 05:18:43,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:18:43,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:18:43,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364156741] [2020-10-29 05:18:43,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:18:43,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:18:43,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:18:43,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:18:43,626 INFO L87 Difference]: Start difference. First operand 3699 states and 4317 transitions. Second operand 5 states. [2020-10-29 05:18:50,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:18:50,419 INFO L93 Difference]: Finished difference Result 10774 states and 12817 transitions. [2020-10-29 05:18:50,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:18:50,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 885 [2020-10-29 05:18:50,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:18:50,457 INFO L225 Difference]: With dead ends: 10774 [2020-10-29 05:18:50,457 INFO L226 Difference]: Without dead ends: 7081 [2020-10-29 05:18:50,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:18:50,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7081 states. [2020-10-29 05:18:50,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7081 to 7073. [2020-10-29 05:18:50,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7073 states. [2020-10-29 05:18:50,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7073 states to 7073 states and 8201 transitions. [2020-10-29 05:18:50,642 INFO L78 Accepts]: Start accepts. Automaton has 7073 states and 8201 transitions. Word has length 885 [2020-10-29 05:18:50,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:18:50,644 INFO L481 AbstractCegarLoop]: Abstraction has 7073 states and 8201 transitions. [2020-10-29 05:18:50,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:18:50,644 INFO L276 IsEmpty]: Start isEmpty. Operand 7073 states and 8201 transitions. [2020-10-29 05:18:50,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2020-10-29 05:18:50,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:18:50,673 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:18:50,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:18:50,674 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:18:50,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:18:50,675 INFO L82 PathProgramCache]: Analyzing trace with hash 396029515, now seen corresponding path program 1 times [2020-10-29 05:18:50,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:18:50,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076375418] [2020-10-29 05:18:50,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:18:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:50,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:50,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:55,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:55,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 950 [2020-10-29 05:18:55,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:18:55,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 05:18:55,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:55,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:55,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 05:18:55,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-29 05:18:55,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 713 [2020-10-29 05:18:55,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:58,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:18:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:58,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:58,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:58,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:18:58,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:58,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:18:58,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:58,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:58,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:18:58,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:58,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:18:58,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:58,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:18:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:58,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:58,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:58,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 05:18:58,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:58,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 05:18:58,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:58,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:58,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:18:58,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:58,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-29 05:18:58,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:19:03,915 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 121 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:19:03,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076375418] [2020-10-29 05:19:03,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:19:03,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 05:19:03,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108994680] [2020-10-29 05:19:03,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 05:19:03,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:19:03,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 05:19:03,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-10-29 05:19:03,919 INFO L87 Difference]: Start difference. First operand 7073 states and 8201 transitions. Second operand 19 states. [2020-10-29 05:19:05,646 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 05:19:05,830 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-29 05:19:08,995 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 124 [2020-10-29 05:19:11,051 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 123 [2020-10-29 05:19:11,779 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 113 [2020-10-29 05:19:12,101 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 119 [2020-10-29 05:19:14,900 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 118 [2020-10-29 05:19:16,411 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 119 [2020-10-29 05:19:18,097 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-29 05:19:18,463 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 118 [2020-10-29 05:19:19,066 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2020-10-29 05:19:23,944 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 107 [2020-10-29 05:19:24,213 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 109 [2020-10-29 05:19:24,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:19:24,961 INFO L93 Difference]: Finished difference Result 14852 states and 17407 transitions. [2020-10-29 05:19:24,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 05:19:24,966 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 932 [2020-10-29 05:19:24,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:19:25,001 INFO L225 Difference]: With dead ends: 14852 [2020-10-29 05:19:25,001 INFO L226 Difference]: Without dead ends: 7785 [2020-10-29 05:19:25,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 05:19:25,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7785 states. [2020-10-29 05:19:25,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7785 to 7777. [2020-10-29 05:19:25,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7777 states. [2020-10-29 05:19:25,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7777 states to 7777 states and 8910 transitions. [2020-10-29 05:19:25,191 INFO L78 Accepts]: Start accepts. Automaton has 7777 states and 8910 transitions. Word has length 932 [2020-10-29 05:19:25,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:19:25,192 INFO L481 AbstractCegarLoop]: Abstraction has 7777 states and 8910 transitions. [2020-10-29 05:19:25,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 05:19:25,192 INFO L276 IsEmpty]: Start isEmpty. Operand 7777 states and 8910 transitions. [2020-10-29 05:19:25,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2020-10-29 05:19:25,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:19:25,222 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:19:25,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:19:25,222 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:19:25,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:19:25,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1069434558, now seen corresponding path program 1 times [2020-10-29 05:19:25,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:19:25,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677329100] [2020-10-29 05:19:25,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:19:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:25,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:26,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:28,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:30,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:30,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 975 [2020-10-29 05:19:30,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:19:30,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-29 05:19:30,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:30,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:19:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-29 05:19:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 811 [2020-10-29 05:19:30,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:19:30,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:19:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:30,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:30,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:30,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:19:30,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:19:30,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:19:30,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:30,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:30,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:19:30,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:19:30,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:19:30,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:19:30,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:19:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:30,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:31,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:31,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 05:19:31,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:19:31,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-29 05:19:31,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:31,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:31,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:19:31,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:19:31,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-29 05:19:31,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:19:31,913 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 146 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:19:31,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677329100] [2020-10-29 05:19:31,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:19:31,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:19:31,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239010488] [2020-10-29 05:19:31,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:19:31,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:19:31,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:19:31,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:19:31,916 INFO L87 Difference]: Start difference. First operand 7777 states and 8910 transitions. Second operand 6 states. [2020-10-29 05:19:42,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:19:42,352 INFO L93 Difference]: Finished difference Result 29050 states and 34558 transitions. [2020-10-29 05:19:42,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:19:42,352 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 957 [2020-10-29 05:19:42,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:19:42,438 INFO L225 Difference]: With dead ends: 29050 [2020-10-29 05:19:42,439 INFO L226 Difference]: Without dead ends: 21279 [2020-10-29 05:19:42,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:19:42,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21279 states. [2020-10-29 05:19:42,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21279 to 21267. [2020-10-29 05:19:42,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21267 states. [2020-10-29 05:19:42,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21267 states to 21267 states and 24345 transitions. [2020-10-29 05:19:42,937 INFO L78 Accepts]: Start accepts. Automaton has 21267 states and 24345 transitions. Word has length 957 [2020-10-29 05:19:42,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:19:42,938 INFO L481 AbstractCegarLoop]: Abstraction has 21267 states and 24345 transitions. [2020-10-29 05:19:42,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:19:42,938 INFO L276 IsEmpty]: Start isEmpty. Operand 21267 states and 24345 transitions. [2020-10-29 05:19:43,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1096 [2020-10-29 05:19:43,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:19:43,011 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:19:43,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 05:19:43,012 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:19:43,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:19:43,013 INFO L82 PathProgramCache]: Analyzing trace with hash 211002848, now seen corresponding path program 1 times [2020-10-29 05:19:43,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:19:43,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387437567] [2020-10-29 05:19:43,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:19:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:43,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:43,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:48,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:48,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1115 [2020-10-29 05:19:48,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:19:48,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5104 [2020-10-29 05:19:48,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:48,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:48,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:19:48,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-29 05:19:48,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 625 [2020-10-29 05:19:48,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:19:50,329 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2020-10-29 05:19:50,533 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-10-29 05:19:50,738 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-10-29 05:19:50,869 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 39 [2020-10-29 05:19:51,015 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2020-10-29 05:19:51,163 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2020-10-29 05:19:51,385 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 40 [2020-10-29 05:19:51,556 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 36 [2020-10-29 05:19:51,719 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 36 [2020-10-29 05:19:51,873 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 36 [2020-10-29 05:19:52,114 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 40 [2020-10-29 05:19:52,352 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 38 [2020-10-29 05:19:52,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:19:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:52,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:52,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:52,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:19:52,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:19:52,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:19:52,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:52,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:52,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:19:52,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:19:52,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:19:52,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:19:52,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:19:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:52,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:52,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:52,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-29 05:19:52,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:19:52,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-29 05:19:52,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:52,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:52,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:19:52,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:19:52,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-29 05:19:52,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:19:52,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 05:19:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:52,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:52,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:52,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 05:19:52,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:19:52,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 05:19:52,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:52,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:52,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:19:52,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:19:52,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 05:19:52,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:20:00,904 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:20:00,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387437567] [2020-10-29 05:20:00,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:20:00,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 05:20:00,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340785101] [2020-10-29 05:20:00,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 05:20:00,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:20:00,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 05:20:00,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:20:00,908 INFO L87 Difference]: Start difference. First operand 21267 states and 24345 transitions. Second operand 17 states. [2020-10-29 05:20:03,131 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 05:20:03,583 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 136 [2020-10-29 05:20:06,782 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 134 [2020-10-29 05:20:08,363 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 05:20:08,576 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 05:20:12,587 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 124 [2020-10-29 05:20:13,087 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-29 05:20:13,335 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 05:20:13,532 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-29 05:20:14,181 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 119 [2020-10-29 05:20:14,821 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-29 05:20:16,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:20:16,513 INFO L93 Difference]: Finished difference Result 43158 states and 49670 transitions. [2020-10-29 05:20:16,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 05:20:16,514 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 1095 [2020-10-29 05:20:16,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:20:16,588 INFO L225 Difference]: With dead ends: 43158 [2020-10-29 05:20:16,588 INFO L226 Difference]: Without dead ends: 21728 [2020-10-29 05:20:16,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-10-29 05:20:16,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21728 states. [2020-10-29 05:20:17,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21728 to 21716. [2020-10-29 05:20:17,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21716 states. [2020-10-29 05:20:17,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21716 states to 21716 states and 24799 transitions. [2020-10-29 05:20:17,056 INFO L78 Accepts]: Start accepts. Automaton has 21716 states and 24799 transitions. Word has length 1095 [2020-10-29 05:20:17,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:20:17,057 INFO L481 AbstractCegarLoop]: Abstraction has 21716 states and 24799 transitions. [2020-10-29 05:20:17,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 05:20:17,058 INFO L276 IsEmpty]: Start isEmpty. Operand 21716 states and 24799 transitions. [2020-10-29 05:20:17,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1116 [2020-10-29 05:20:17,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:20:17,129 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:20:17,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 05:20:17,129 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:20:17,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:20:17,130 INFO L82 PathProgramCache]: Analyzing trace with hash 402834808, now seen corresponding path program 1 times [2020-10-29 05:20:17,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:20:17,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160644237] [2020-10-29 05:20:17,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:20:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:20:17,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:18,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:21,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:22,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:20:22,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1135 [2020-10-29 05:20:22,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:20:22,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 05:20:22,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:20:22,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:20:22,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:20:22,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-29 05:20:22,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 814 [2020-10-29 05:20:22,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:20:22,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:20:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:20:22,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:22,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:20:22,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:20:22,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:20:22,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:20:22,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:20:22,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:20:22,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:20:22,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:20:22,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:20:22,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:20:22,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:20:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:20:22,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:23,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:20:23,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-29 05:20:23,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:20:23,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-29 05:20:23,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:20:23,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:20:23,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:20:23,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:20:23,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 302 [2020-10-29 05:20:23,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:20:23,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 05:20:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:20:23,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:23,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:20:23,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 05:20:23,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:20:23,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 05:20:23,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:20:23,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:20:23,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:20:23,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:20:23,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 05:20:23,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:20:24,237 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 300 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:20:24,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160644237] [2020-10-29 05:20:24,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:20:24,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:20:24,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562592720] [2020-10-29 05:20:24,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:20:24,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:20:24,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:20:24,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:20:24,240 INFO L87 Difference]: Start difference. First operand 21716 states and 24799 transitions. Second operand 5 states. [2020-10-29 05:20:30,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:20:30,835 INFO L93 Difference]: Finished difference Result 61104 states and 71709 transitions. [2020-10-29 05:20:30,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:20:30,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1115 [2020-10-29 05:20:30,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:20:30,951 INFO L225 Difference]: With dead ends: 61104 [2020-10-29 05:20:30,951 INFO L226 Difference]: Without dead ends: 39394 [2020-10-29 05:20:30,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:20:31,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39394 states. [2020-10-29 05:20:31,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39394 to 38545. [2020-10-29 05:20:31,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38545 states. [2020-10-29 05:20:31,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38545 states to 38545 states and 44838 transitions. [2020-10-29 05:20:31,714 INFO L78 Accepts]: Start accepts. Automaton has 38545 states and 44838 transitions. Word has length 1115 [2020-10-29 05:20:31,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:20:31,715 INFO L481 AbstractCegarLoop]: Abstraction has 38545 states and 44838 transitions. [2020-10-29 05:20:31,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:20:31,715 INFO L276 IsEmpty]: Start isEmpty. Operand 38545 states and 44838 transitions. [2020-10-29 05:20:31,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1250 [2020-10-29 05:20:31,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:20:31,791 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:20:31,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 05:20:31,791 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:20:31,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:20:31,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1820392564, now seen corresponding path program 1 times [2020-10-29 05:20:31,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:20:31,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889176499] [2020-10-29 05:20:31,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:20:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:20:32,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:33,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:36,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:20:36,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1269 [2020-10-29 05:20:36,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:20:36,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 05:20:36,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:20:36,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:20:36,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:20:36,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 451 [2020-10-29 05:20:36,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 814 [2020-10-29 05:20:36,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:20:37,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:20:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:20:37,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:37,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:20:37,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:20:37,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:20:37,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 05:20:37,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:20:37,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:20:37,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:20:37,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:20:37,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:20:37,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:20:37,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:20:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:20:37,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:37,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:20:37,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 445 [2020-10-29 05:20:37,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:20:37,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-29 05:20:37,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:20:37,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:20:37,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:20:37,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:20:37,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 436 [2020-10-29 05:20:37,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:20:37,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 05:20:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:20:37,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:38,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:20:38,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-29 05:20:38,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:20:38,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-29 05:20:38,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:20:38,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:20:38,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:20:38,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:20:38,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-29 05:20:38,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:20:39,441 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 434 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:20:39,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889176499] [2020-10-29 05:20:39,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:20:39,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:20:39,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510083174] [2020-10-29 05:20:39,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:20:39,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:20:39,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:20:39,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:20:39,444 INFO L87 Difference]: Start difference. First operand 38545 states and 44838 transitions. Second operand 5 states. [2020-10-29 05:20:47,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:20:47,296 INFO L93 Difference]: Finished difference Result 93072 states and 110503 transitions. [2020-10-29 05:20:47,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:20:47,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1249 [2020-10-29 05:20:47,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:20:47,456 INFO L225 Difference]: With dead ends: 93072 [2020-10-29 05:20:47,456 INFO L226 Difference]: Without dead ends: 54533 [2020-10-29 05:20:47,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:20:47,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54533 states. [2020-10-29 05:20:48,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54533 to 54525. [2020-10-29 05:20:48,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54525 states. [2020-10-29 05:20:48,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54525 states to 54525 states and 63202 transitions. [2020-10-29 05:20:48,688 INFO L78 Accepts]: Start accepts. Automaton has 54525 states and 63202 transitions. Word has length 1249 [2020-10-29 05:20:48,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:20:48,689 INFO L481 AbstractCegarLoop]: Abstraction has 54525 states and 63202 transitions. [2020-10-29 05:20:48,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:20:48,689 INFO L276 IsEmpty]: Start isEmpty. Operand 54525 states and 63202 transitions. [2020-10-29 05:20:49,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1366 [2020-10-29 05:20:49,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:20:49,147 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:20:49,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 05:20:49,147 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:20:49,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:20:49,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1512109332, now seen corresponding path program 1 times [2020-10-29 05:20:49,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:20:49,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916647730] [2020-10-29 05:20:49,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:20:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:20:49,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:49,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:49,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking...