/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/Problem18_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:38:33,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:38:33,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:38:33,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:38:33,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:38:33,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:38:33,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:38:33,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:38:33,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:38:33,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:38:33,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:38:33,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:38:33,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:38:33,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:38:33,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:38:33,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:38:33,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:38:33,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:38:33,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:38:33,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:38:33,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:38:33,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:38:33,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:38:33,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:38:33,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:38:33,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:38:33,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:38:33,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:38:33,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:38:33,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:38:33,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:38:33,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:38:33,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:38:33,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:38:33,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:38:33,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:38:33,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:38:33,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:38:33,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:38:33,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:38:33,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:38:33,970 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 08:38:34,027 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:38:34,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:38:34,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:38:34,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:38:34,032 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:38:34,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:38:34,032 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:38:34,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:38:34,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:38:34,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:38:34,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:38:34,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:38:34,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:38:34,035 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:38:34,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:38:34,035 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:38:34,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:38:34,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:38:34,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:38:34,036 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:38:34,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:38:34,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:38:34,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:38:34,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:38:34,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:38:34,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:38:34,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:38:34,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:38:34,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:38:34,038 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:38:34,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:38:34,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:38:34,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:38:34,457 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:38:34,458 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:38:34,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label48.c [2020-10-29 08:38:34,550 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1e936f7b/57772970aa8c4485b4e95055f9fac8f3/FLAGc5069d618 [2020-10-29 08:38:35,545 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:38:35,546 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label48.c [2020-10-29 08:38:35,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1e936f7b/57772970aa8c4485b4e95055f9fac8f3/FLAGc5069d618 [2020-10-29 08:38:35,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1e936f7b/57772970aa8c4485b4e95055f9fac8f3 [2020-10-29 08:38:35,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:38:35,635 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:38:35,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:38:35,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:38:35,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:38:35,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:38:35" (1/1) ... [2020-10-29 08:38:35,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f84cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:38:35, skipping insertion in model container [2020-10-29 08:38:35,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:38:35" (1/1) ... [2020-10-29 08:38:35,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:38:35,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:38:37,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:38:37,051 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:38:37,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:38:37,678 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:38:37,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:38:37 WrapperNode [2020-10-29 08:38:37,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:38:37,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:38:37,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:38:37,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:38:37,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:38:37" (1/1) ... [2020-10-29 08:38:37,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:38:37" (1/1) ... [2020-10-29 08:38:37,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:38:37" (1/1) ... [2020-10-29 08:38:37,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:38:37" (1/1) ... [2020-10-29 08:38:37,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:38:37" (1/1) ... [2020-10-29 08:38:37,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:38:37" (1/1) ... [2020-10-29 08:38:37,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:38:37" (1/1) ... [2020-10-29 08:38:37,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:38:37,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:38:37,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:38:37,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:38:37,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:38:37" (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 08:38:38,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:38:38,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:38:38,007 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:38:38,007 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:38:38,008 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:38:38,008 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:38:38,008 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:38:38,008 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:38:38,008 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:38:38,008 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:38:38,009 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:38:38,009 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:38:38,009 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:38:38,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:38:38,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:38:38,009 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:38:38,009 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:38:38,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:38:38,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:38:38,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:38:38,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:38:38,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:38:38,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:38:41,679 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:38:41,679 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:38:41,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:38:41 BoogieIcfgContainer [2020-10-29 08:38:41,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:38:41,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:38:41,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:38:41,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:38:41,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:38:35" (1/3) ... [2020-10-29 08:38:41,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb8f60a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:38:41, skipping insertion in model container [2020-10-29 08:38:41,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:38:37" (2/3) ... [2020-10-29 08:38:41,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb8f60a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:38:41, skipping insertion in model container [2020-10-29 08:38:41,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:38:41" (3/3) ... [2020-10-29 08:38:41,693 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label48.c [2020-10-29 08:38:41,705 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:38:41,711 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:38:41,724 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:38:41,773 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:38:41,773 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:38:41,773 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:38:41,774 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:38:41,774 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:38:41,774 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:38:41,774 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:38:41,774 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:38:41,807 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-29 08:38:41,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 08:38:41,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:38:41,820 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] [2020-10-29 08:38:41,821 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:38:41,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:38:41,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1487272208, now seen corresponding path program 1 times [2020-10-29 08:38:41,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:38:41,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560648605] [2020-10-29 08:38:41,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:38:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:42,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:42,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:42,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:38:42,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:38:42,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-10-29 08:38:42,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:42,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:42,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:38:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:38:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 08:38:42,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:38:42,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:38:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:42,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:42,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:42,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:38:42,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:38:42,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 08:38:42,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:42,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:42,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:38:42,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:38:42,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:38:42,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:38:42,882 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 08:38:42,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560648605] [2020-10-29 08:38:42,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:38:42,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 08:38:42,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741039699] [2020-10-29 08:38:42,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:38:42,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:38:42,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:38:42,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:38:42,914 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-29 08:38:56,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:38:56,081 INFO L93 Difference]: Finished difference Result 2989 states and 5775 transitions. [2020-10-29 08:38:56,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:38:56,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-29 08:38:56,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:38:56,125 INFO L225 Difference]: With dead ends: 2989 [2020-10-29 08:38:56,125 INFO L226 Difference]: Without dead ends: 2143 [2020-10-29 08:38:56,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:38:56,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-29 08:38:56,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-29 08:38:56,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-29 08:38:56,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3572 transitions. [2020-10-29 08:38:56,351 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3572 transitions. Word has length 61 [2020-10-29 08:38:56,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:38:56,353 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3572 transitions. [2020-10-29 08:38:56,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:38:56,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3572 transitions. [2020-10-29 08:38:56,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 08:38:56,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:38:56,370 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:38:56,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:38:56,370 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:38:56,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:38:56,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1312653107, now seen corresponding path program 1 times [2020-10-29 08:38:56,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:38:56,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692922328] [2020-10-29 08:38:56,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:38:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:56,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:56,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:57,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:58,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:58,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-29 08:38:58,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:38:58,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1644 [2020-10-29 08:38:58,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:58,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:58,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:38:58,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:38:58,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 08:38:58,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 08:38:58,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:38:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:58,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:58,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:58,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:38:58,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:38:58,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 08:38:58,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:58,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:58,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:38:58,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:38:58,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:38:58,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 08:38:58,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:38:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:58,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:58,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:58,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 08:38:58,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:38:58,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-29 08:38:58,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:58,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:58,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:38:58,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:38:58,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 08:38:58,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:38:58,661 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:38:58,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692922328] [2020-10-29 08:38:58,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:38:58,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:38:58,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079736188] [2020-10-29 08:38:58,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:38:58,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:38:58,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:38:58,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:38:58,668 INFO L87 Difference]: Start difference. First operand 2136 states and 3572 transitions. Second operand 7 states. [2020-10-29 08:39:09,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:39:09,433 INFO L93 Difference]: Finished difference Result 6511 states and 10972 transitions. [2020-10-29 08:39:09,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:39:09,437 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2020-10-29 08:39:09,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:39:09,465 INFO L225 Difference]: With dead ends: 6511 [2020-10-29 08:39:09,465 INFO L226 Difference]: Without dead ends: 4381 [2020-10-29 08:39:09,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:39:09,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4381 states. [2020-10-29 08:39:09,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4381 to 3598. [2020-10-29 08:39:09,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3598 states. [2020-10-29 08:39:09,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 5300 transitions. [2020-10-29 08:39:09,624 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 5300 transitions. Word has length 149 [2020-10-29 08:39:09,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:39:09,626 INFO L481 AbstractCegarLoop]: Abstraction has 3598 states and 5300 transitions. [2020-10-29 08:39:09,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:39:09,627 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 5300 transitions. [2020-10-29 08:39:09,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-29 08:39:09,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:39:09,638 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:39:09,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:39:09,638 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:39:09,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:39:09,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1332254642, now seen corresponding path program 1 times [2020-10-29 08:39:09,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:39:09,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706591947] [2020-10-29 08:39:09,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:39:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:39:09,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:09,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:09,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:12,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:14,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:39:14,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-29 08:39:14,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:39:14,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4716 [2020-10-29 08:39:14,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:39:14,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:39:14,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:39:14,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 08:39:14,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 08:39:14,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:39:14,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:39:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:39:14,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:14,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:39:14,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:39:14,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:39:14,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:39:14,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:39:14,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:39:14,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:39:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:39:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:39:14,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:39:14,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:39:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:39:14,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:14,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:39:14,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:39:14,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:39:14,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 08:39:14,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:39:14,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:39:14,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:39:14,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:39:14,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 08:39:14,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:39:14,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 08:39:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:39:14,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:14,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:39:14,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 08:39:14,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:39:14,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-29 08:39:14,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:39:14,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:39:14,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:39:14,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:39:14,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 08:39:14,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:39:15,064 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:39:15,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706591947] [2020-10-29 08:39:15,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:39:15,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:39:15,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852836987] [2020-10-29 08:39:15,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:39:15,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:39:15,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:39:15,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:39:15,075 INFO L87 Difference]: Start difference. First operand 3598 states and 5300 transitions. Second operand 7 states. [2020-10-29 08:39:26,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:39:26,431 INFO L93 Difference]: Finished difference Result 9364 states and 14373 transitions. [2020-10-29 08:39:26,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:39:26,433 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2020-10-29 08:39:26,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:39:26,468 INFO L225 Difference]: With dead ends: 9364 [2020-10-29 08:39:26,469 INFO L226 Difference]: Without dead ends: 5772 [2020-10-29 08:39:26,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:39:26,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5772 states. [2020-10-29 08:39:26,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5772 to 5761. [2020-10-29 08:39:26,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5761 states. [2020-10-29 08:39:26,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5761 states to 5761 states and 8241 transitions. [2020-10-29 08:39:26,668 INFO L78 Accepts]: Start accepts. Automaton has 5761 states and 8241 transitions. Word has length 220 [2020-10-29 08:39:26,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:39:26,669 INFO L481 AbstractCegarLoop]: Abstraction has 5761 states and 8241 transitions. [2020-10-29 08:39:26,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:39:26,669 INFO L276 IsEmpty]: Start isEmpty. Operand 5761 states and 8241 transitions. [2020-10-29 08:39:26,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-29 08:39:26,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:39:26,675 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:39:26,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:39:26,675 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:39:26,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:39:26,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1651336240, now seen corresponding path program 1 times [2020-10-29 08:39:26,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:39:26,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561131693] [2020-10-29 08:39:26,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:39:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:39:26,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:26,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:26,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:29,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:30,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:31,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:39:31,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-29 08:39:31,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:39:31,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 08:39:31,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:39:31,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:39:31,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:39:31,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 08:39:31,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 08:39:31,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:39:31,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:39:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:39:31,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:31,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:39:31,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:39:31,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:39:31,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 08:39:31,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:39:31,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:39:31,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:39:31,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:39:31,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:39:31,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:39:31,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:39:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:39:31,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:32,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:39:32,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:39:32,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:39:32,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 08:39:32,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:39:32,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:39:32,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:39:32,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:39:32,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 08:39:32,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:39:32,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 08:39:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:39:32,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:32,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:39:32,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 08:39:32,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:39:32,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 08:39:32,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:39:32,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:39:32,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:39:32,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:39:32,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-29 08:39:32,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:39:32,539 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:39:32,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561131693] [2020-10-29 08:39:32,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:39:32,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:39:32,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293432264] [2020-10-29 08:39:32,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:39:32,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:39:32,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:39:32,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:39:32,542 INFO L87 Difference]: Start difference. First operand 5761 states and 8241 transitions. Second operand 8 states. [2020-10-29 08:39:49,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:39:49,977 INFO L93 Difference]: Finished difference Result 22470 states and 34077 transitions. [2020-10-29 08:39:49,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 08:39:49,978 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 267 [2020-10-29 08:39:49,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:39:50,083 INFO L225 Difference]: With dead ends: 22470 [2020-10-29 08:39:50,084 INFO L226 Difference]: Without dead ends: 16715 [2020-10-29 08:39:50,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 08:39:50,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16715 states. [2020-10-29 08:39:50,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16715 to 15950. [2020-10-29 08:39:50,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15950 states. [2020-10-29 08:39:50,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15950 states to 15950 states and 23224 transitions. [2020-10-29 08:39:50,581 INFO L78 Accepts]: Start accepts. Automaton has 15950 states and 23224 transitions. Word has length 267 [2020-10-29 08:39:50,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:39:50,581 INFO L481 AbstractCegarLoop]: Abstraction has 15950 states and 23224 transitions. [2020-10-29 08:39:50,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:39:50,582 INFO L276 IsEmpty]: Start isEmpty. Operand 15950 states and 23224 transitions. [2020-10-29 08:39:50,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-29 08:39:50,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:39:50,591 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:39:50,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:39:50,591 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:39:50,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:39:50,594 INFO L82 PathProgramCache]: Analyzing trace with hash 2022154137, now seen corresponding path program 1 times [2020-10-29 08:39:50,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:39:50,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935555555] [2020-10-29 08:39:50,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:39:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:39:50,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:50,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:50,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:51,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:55,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:39:55,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:39:55,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:39:55,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 08:39:55,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:39:55,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:39:55,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:39:55,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-29 08:39:55,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 08:39:55,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:39:55,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:39:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:39:55,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:55,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:39:55,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:39:55,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:39:55,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:39:55,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:39:55,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:39:55,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:39:55,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:39:55,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:39:55,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:39:55,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:39:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:39:55,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:55,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:39:55,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:39:55,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:39:55,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 08:39:55,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:39:55,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:39:55,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:39:55,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:39:55,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:39:55,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:39:55,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 08:39:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:39:55,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:55,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:39:55,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:39:55,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:39:55,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 08:39:55,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:39:55,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:39:55,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:39:55,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:39:55,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 08:39:55,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:39:55,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 08:39:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:39:55,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:56,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:39:56,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 08:39:56,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:39:56,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-29 08:39:56,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:39:56,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:39:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:39:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:39:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 08:39:56,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:39:56,363 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 303 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-29 08:39:56,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935555555] [2020-10-29 08:39:56,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:39:56,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:39:56,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648449456] [2020-10-29 08:39:56,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:39:56,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:39:56,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:39:56,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:39:56,366 INFO L87 Difference]: Start difference. First operand 15950 states and 23224 transitions. Second operand 8 states. [2020-10-29 08:40:13,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:40:13,320 INFO L93 Difference]: Finished difference Result 42905 states and 64175 transitions. [2020-10-29 08:40:13,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:40:13,321 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 294 [2020-10-29 08:40:13,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:40:13,422 INFO L225 Difference]: With dead ends: 42905 [2020-10-29 08:40:13,422 INFO L226 Difference]: Without dead ends: 24740 [2020-10-29 08:40:13,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:40:13,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24740 states. [2020-10-29 08:40:14,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24740 to 23891. [2020-10-29 08:40:14,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23891 states. [2020-10-29 08:40:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23891 states to 23891 states and 28523 transitions. [2020-10-29 08:40:14,065 INFO L78 Accepts]: Start accepts. Automaton has 23891 states and 28523 transitions. Word has length 294 [2020-10-29 08:40:14,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:40:14,065 INFO L481 AbstractCegarLoop]: Abstraction has 23891 states and 28523 transitions. [2020-10-29 08:40:14,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:40:14,066 INFO L276 IsEmpty]: Start isEmpty. Operand 23891 states and 28523 transitions. [2020-10-29 08:40:14,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-29 08:40:14,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:40:14,078 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 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 08:40:14,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:40:14,079 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:40:14,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:40:14,079 INFO L82 PathProgramCache]: Analyzing trace with hash -2033254709, now seen corresponding path program 1 times [2020-10-29 08:40:14,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:40:14,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074967618] [2020-10-29 08:40:14,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:40:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:14,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:14,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:14,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:15,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:19,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:19,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-29 08:40:19,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:40:19,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 08:40:19,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:19,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:19,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:40:19,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-29 08:40:19,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 08:40:19,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:19,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:40:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:19,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:19,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:19,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:40:19,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:19,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:40:19,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:19,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:40:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:40:19,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:19,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:40:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:19,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:19,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:19,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:40:19,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:19,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:40:19,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:19,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:19,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:40:19,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:19,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:40:19,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:19,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 08:40:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:19,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:19,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:19,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 08:40:19,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:19,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 08:40:19,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:19,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:19,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:40:19,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:19,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 08:40:19,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:19,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-29 08:40:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:19,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:19,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:19,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 08:40:19,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:19,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 08:40:19,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:19,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:19,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:40:19,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:40:19,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 08:40:19,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 318 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-29 08:40:19,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074967618] [2020-10-29 08:40:19,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:40:19,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:40:19,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516482825] [2020-10-29 08:40:19,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:40:19,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:40:19,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:40:19,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:40:19,804 INFO L87 Difference]: Start difference. First operand 23891 states and 28523 transitions. Second operand 7 states. [2020-10-29 08:40:29,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:40:29,431 INFO L93 Difference]: Finished difference Result 48873 states and 60188 transitions. [2020-10-29 08:40:29,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:40:29,433 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 327 [2020-10-29 08:40:29,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:40:29,531 INFO L225 Difference]: With dead ends: 48873 [2020-10-29 08:40:29,531 INFO L226 Difference]: Without dead ends: 24988 [2020-10-29 08:40:29,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:40:29,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24988 states. [2020-10-29 08:40:30,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24988 to 24816. [2020-10-29 08:40:30,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24816 states. [2020-10-29 08:40:30,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24816 states to 24816 states and 28777 transitions. [2020-10-29 08:40:30,168 INFO L78 Accepts]: Start accepts. Automaton has 24816 states and 28777 transitions. Word has length 327 [2020-10-29 08:40:30,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:40:30,169 INFO L481 AbstractCegarLoop]: Abstraction has 24816 states and 28777 transitions. [2020-10-29 08:40:30,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:40:30,169 INFO L276 IsEmpty]: Start isEmpty. Operand 24816 states and 28777 transitions. [2020-10-29 08:40:30,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-10-29 08:40:30,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:40:30,189 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:40:30,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:40:30,190 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:40:30,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:40:30,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1401715020, now seen corresponding path program 1 times [2020-10-29 08:40:30,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:40:30,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597988826] [2020-10-29 08:40:30,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:40:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:30,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:30,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:31,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:34,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:34,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-10-29 08:40:34,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:40:34,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4036 [2020-10-29 08:40:34,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:34,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:34,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:40:34,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-29 08:40:34,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-29 08:40:34,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:34,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:40:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:34,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:34,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:34,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:40:34,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:34,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:40:34,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:34,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:40:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:40:34,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:34,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:40:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:34,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:34,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:34,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 08:40:34,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:34,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 08:40:34,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:34,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:34,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:40:34,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:34,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 08:40:34,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:34,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 08:40:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:34,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:34,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:34,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-29 08:40:34,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:34,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-29 08:40:34,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:34,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:34,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:40:34,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:40:34,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-29 08:40:34,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:40:35,429 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:40:35,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597988826] [2020-10-29 08:40:35,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:40:35,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:40:35,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301400847] [2020-10-29 08:40:35,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:40:35,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:40:35,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:40:35,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:40:35,432 INFO L87 Difference]: Start difference. First operand 24816 states and 28777 transitions. Second operand 7 states. [2020-10-29 08:40:44,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:40:44,004 INFO L93 Difference]: Finished difference Result 51932 states and 60249 transitions. [2020-10-29 08:40:44,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:40:44,006 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 417 [2020-10-29 08:40:44,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:40:44,085 INFO L225 Difference]: With dead ends: 51932 [2020-10-29 08:40:44,085 INFO L226 Difference]: Without dead ends: 24958 [2020-10-29 08:40:44,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:40:44,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24958 states. [2020-10-29 08:40:44,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24958 to 24926. [2020-10-29 08:40:44,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24926 states. [2020-10-29 08:40:44,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24926 states to 24926 states and 28244 transitions. [2020-10-29 08:40:44,709 INFO L78 Accepts]: Start accepts. Automaton has 24926 states and 28244 transitions. Word has length 417 [2020-10-29 08:40:44,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:40:44,710 INFO L481 AbstractCegarLoop]: Abstraction has 24926 states and 28244 transitions. [2020-10-29 08:40:44,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:40:44,710 INFO L276 IsEmpty]: Start isEmpty. Operand 24926 states and 28244 transitions. [2020-10-29 08:40:44,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2020-10-29 08:40:44,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:40:44,741 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:40:44,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:40:44,741 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:40:44,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:40:44,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1570911424, now seen corresponding path program 1 times [2020-10-29 08:40:44,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:40:44,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581564817] [2020-10-29 08:40:44,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:40:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:44,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:44,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:45,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:49,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:49,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 530 [2020-10-29 08:40:49,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:40:49,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 08:40:49,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:49,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:49,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 08:40:49,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 08:40:49,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 296 [2020-10-29 08:40:49,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:49,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:40:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:49,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:49,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:49,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:40:49,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:49,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:40:49,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:49,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:40:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:40:49,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:49,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:40:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:50,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:50,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:50,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:40:50,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:50,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 08:40:50,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:50,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:50,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:40:50,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:50,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 08:40:50,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:50,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 08:40:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:50,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:50,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:50,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 08:40:50,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:50,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 08:40:50,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:50,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:40:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:40:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 08:40:50,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:50,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-29 08:40:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:50,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:50,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:50,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 08:40:50,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:50,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-29 08:40:50,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:50,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:50,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:40:50,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:40:50,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-29 08:40:50,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:50,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-10-29 08:40:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:50,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:50,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:50,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 08:40:50,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:50,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 08:40:50,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:50,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:50,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:40:50,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-29 08:40:50,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:40:50,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:50,811 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 362 proven. 263 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 08:40:50,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581564817] [2020-10-29 08:40:50,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:40:50,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 08:40:50,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706127864] [2020-10-29 08:40:50,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:40:50,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:40:50,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:40:50,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:40:50,814 INFO L87 Difference]: Start difference. First operand 24926 states and 28244 transitions. Second operand 10 states. [2020-10-29 08:41:13,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:41:13,471 INFO L93 Difference]: Finished difference Result 88340 states and 111226 transitions. [2020-10-29 08:41:13,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 08:41:13,472 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 512 [2020-10-29 08:41:13,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:41:13,709 INFO L225 Difference]: With dead ends: 88340 [2020-10-29 08:41:13,709 INFO L226 Difference]: Without dead ends: 63420 [2020-10-29 08:41:13,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2020-10-29 08:41:13,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63420 states. [2020-10-29 08:41:15,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63420 to 59938. [2020-10-29 08:41:15,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59938 states. [2020-10-29 08:41:15,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59938 states to 59938 states and 69369 transitions. [2020-10-29 08:41:15,588 INFO L78 Accepts]: Start accepts. Automaton has 59938 states and 69369 transitions. Word has length 512 [2020-10-29 08:41:15,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:41:15,589 INFO L481 AbstractCegarLoop]: Abstraction has 59938 states and 69369 transitions. [2020-10-29 08:41:15,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:41:15,589 INFO L276 IsEmpty]: Start isEmpty. Operand 59938 states and 69369 transitions. [2020-10-29 08:41:15,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2020-10-29 08:41:15,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:41:15,639 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:41:15,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:41:15,639 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:41:15,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:41:15,640 INFO L82 PathProgramCache]: Analyzing trace with hash 274659577, now seen corresponding path program 1 times [2020-10-29 08:41:15,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:41:15,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167992319] [2020-10-29 08:41:15,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:41:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:15,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:15,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:16,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:20,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:20,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 529 [2020-10-29 08:41:20,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:41:20,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 08:41:20,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:20,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:20,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:41:20,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 08:41:20,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 382 [2020-10-29 08:41:20,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:21,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:41:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:21,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:21,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:21,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:41:21,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:21,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:41:21,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:21,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:21,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:41:21,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:41:21,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:41:21,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:21,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:41:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:21,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:21,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:21,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:41:21,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:21,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 08:41:21,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:21,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:21,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:41:21,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:41:21,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 08:41:21,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:21,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 08:41:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:21,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:21,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:21,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-29 08:41:21,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:21,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 775 [2020-10-29 08:41:21,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:21,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:21,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:41:21,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:41:21,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 383 [2020-10-29 08:41:21,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:22,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:41:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:22,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:22,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:22,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 08:41:22,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:22,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-29 08:41:22,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:22,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:22,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:41:22,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:41:22,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 08:41:22,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:41:22,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167992319] [2020-10-29 08:41:22,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:41:22,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:41:22,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655413556] [2020-10-29 08:41:22,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:41:22,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:41:22,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:41:22,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:41:22,832 INFO L87 Difference]: Start difference. First operand 59938 states and 69369 transitions. Second operand 7 states. [2020-10-29 08:41:49,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:41:49,902 INFO L93 Difference]: Finished difference Result 130805 states and 157136 transitions. [2020-10-29 08:41:49,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:41:49,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 513 [2020-10-29 08:41:49,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:41:50,292 INFO L225 Difference]: With dead ends: 130805 [2020-10-29 08:41:50,293 INFO L226 Difference]: Without dead ends: 70877 [2020-10-29 08:41:50,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:41:50,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70877 states. [2020-10-29 08:41:51,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70877 to 69804. [2020-10-29 08:41:51,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69804 states. [2020-10-29 08:41:51,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69804 states to 69804 states and 79479 transitions. [2020-10-29 08:41:51,793 INFO L78 Accepts]: Start accepts. Automaton has 69804 states and 79479 transitions. Word has length 513 [2020-10-29 08:41:51,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:41:51,794 INFO L481 AbstractCegarLoop]: Abstraction has 69804 states and 79479 transitions. [2020-10-29 08:41:51,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:41:51,794 INFO L276 IsEmpty]: Start isEmpty. Operand 69804 states and 79479 transitions. [2020-10-29 08:41:51,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2020-10-29 08:41:51,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:41:51,829 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:41:51,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:41:51,829 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:41:51,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:41:51,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1705310907, now seen corresponding path program 1 times [2020-10-29 08:41:51,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:41:51,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90118271] [2020-10-29 08:41:51,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:41:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:51,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:52,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:54,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:56,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:56,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 546 [2020-10-29 08:41:56,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:41:56,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 08:41:56,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:56,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:56,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:41:56,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-29 08:41:56,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 382 [2020-10-29 08:41:56,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:57,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:41:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:57,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:57,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:57,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:41:57,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:57,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:41:57,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:57,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:57,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:41:57,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:41:57,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:41:57,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:57,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:41:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:57,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:57,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:57,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 08:41:57,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:57,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 08:41:57,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:57,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:41:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:41:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 08:41:57,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:57,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 08:41:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:57,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:57,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:57,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-29 08:41:57,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:57,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-29 08:41:57,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:57,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:57,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:41:57,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:41:57,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 383 [2020-10-29 08:41:57,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:57,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:41:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:57,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:57,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:57,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 08:41:57,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:57,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 08:41:57,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:57,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:57,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:41:57,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:41:57,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 08:41:57,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:58,294 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:41:58,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90118271] [2020-10-29 08:41:58,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:41:58,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:41:58,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503475070] [2020-10-29 08:41:58,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:41:58,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:41:58,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:41:58,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:41:58,298 INFO L87 Difference]: Start difference. First operand 69804 states and 79479 transitions. Second operand 7 states. [2020-10-29 08:42:09,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:42:09,346 INFO L93 Difference]: Finished difference Result 154996 states and 178587 transitions. [2020-10-29 08:42:09,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:42:09,347 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 530 [2020-10-29 08:42:09,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:42:09,501 INFO L225 Difference]: With dead ends: 154996 [2020-10-29 08:42:09,502 INFO L226 Difference]: Without dead ends: 85910 [2020-10-29 08:42:09,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:42:09,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85910 states.