/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:55:19,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:55:19,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:55:20,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:55:20,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:55:20,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:55:20,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:55:20,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:55:20,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:55:20,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:55:20,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:55:20,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:55:20,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:55:20,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:55:20,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:55:20,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:55:20,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:55:20,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:55:20,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:55:20,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:55:20,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:55:20,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:55:20,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:55:20,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:55:20,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:55:20,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:55:20,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:55:20,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:55:20,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:55:20,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:55:20,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:55:20,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:55:20,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:55:20,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:55:20,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:55:20,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:55:20,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:55:20,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:55:20,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:55:20,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:55:20,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:55:20,065 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 06:55:20,096 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:55:20,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:55:20,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:55:20,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:55:20,101 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:55:20,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:55:20,102 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:55:20,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:55:20,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:55:20,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:55:20,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:55:20,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:55:20,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:55:20,103 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:55:20,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:55:20,105 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:55:20,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:55:20,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:55:20,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:55:20,105 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:55:20,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:55:20,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:55:20,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:55:20,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:55:20,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:55:20,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:55:20,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:55:20,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:55:20,107 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:55:20,108 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:55:20,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:55:20,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:55:20,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:55:20,640 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:55:20,642 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:55:20,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label11.c [2020-10-29 06:55:20,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8af5bc16b/9bd4b1bedd7845deb7da2c0df0cbeaab/FLAGe2933f5cc [2020-10-29 06:55:21,961 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:55:21,962 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label11.c [2020-10-29 06:55:21,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8af5bc16b/9bd4b1bedd7845deb7da2c0df0cbeaab/FLAGe2933f5cc [2020-10-29 06:55:22,328 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8af5bc16b/9bd4b1bedd7845deb7da2c0df0cbeaab [2020-10-29 06:55:22,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:55:22,346 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:55:22,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:55:22,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:55:22,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:55:22,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:55:22" (1/1) ... [2020-10-29 06:55:22,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59405cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:55:22, skipping insertion in model container [2020-10-29 06:55:22,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:55:22" (1/1) ... [2020-10-29 06:55:22,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:55:22,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:55:23,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:55:23,952 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:55:24,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:55:24,722 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:55:24,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:55:24 WrapperNode [2020-10-29 06:55:24,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:55:24,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:55:24,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:55:24,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:55:24,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:55:24" (1/1) ... [2020-10-29 06:55:24,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:55:24" (1/1) ... [2020-10-29 06:55:24,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:55:24" (1/1) ... [2020-10-29 06:55:24,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:55:24" (1/1) ... [2020-10-29 06:55:24,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:55:24" (1/1) ... [2020-10-29 06:55:25,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:55:24" (1/1) ... [2020-10-29 06:55:25,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:55:24" (1/1) ... [2020-10-29 06:55:25,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:55:25,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:55:25,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:55:25,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:55:25,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:55:24" (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 06:55:25,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:55:25,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:55:25,213 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:55:25,213 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:55:25,213 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 06:55:25,213 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 06:55:25,213 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 06:55:25,214 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:55:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:55:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 06:55:25,215 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 06:55:25,215 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 06:55:25,215 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:55:25,215 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:55:25,215 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:55:25,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:55:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:55:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:55:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:55:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:55:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:55:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:55:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:55:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:55:25,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:55:31,163 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:55:31,167 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:55:31,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:55:31 BoogieIcfgContainer [2020-10-29 06:55:31,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:55:31,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:55:31,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:55:31,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:55:31,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:55:22" (1/3) ... [2020-10-29 06:55:31,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c14e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:55:31, skipping insertion in model container [2020-10-29 06:55:31,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:55:24" (2/3) ... [2020-10-29 06:55:31,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c14e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:55:31, skipping insertion in model container [2020-10-29 06:55:31,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:55:31" (3/3) ... [2020-10-29 06:55:31,186 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label11.c [2020-10-29 06:55:31,199 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:55:31,206 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:55:31,223 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:55:31,261 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:55:31,262 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:55:31,262 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:55:31,262 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:55:31,262 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:55:31,262 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:55:31,262 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:55:31,262 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:55:31,301 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 06:55:31,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 06:55:31,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:55:31,312 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] [2020-10-29 06:55:31,312 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:55:31,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:55:31,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1005932524, now seen corresponding path program 1 times [2020-10-29 06:55:31,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:55:31,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515169233] [2020-10-29 06:55:31,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:55:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:31,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:32,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:32,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 06:55:32,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:32,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-10-29 06:55:32,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:32,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:32,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:55:32,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:55:32,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 06:55:32,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:55:32,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:55:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:32,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:32,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:32,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:55:32,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:32,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 06:55:32,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:32,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:32,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:32,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:32,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:55:32,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:55:32,586 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 06:55:32,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515169233] [2020-10-29 06:55:32,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:55:32,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 06:55:32,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104035161] [2020-10-29 06:55:32,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 06:55:32,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:55:32,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 06:55:32,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 06:55:32,624 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-29 06:55:43,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:55:43,724 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-29 06:55:43,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:55:43,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-29 06:55:43,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:55:43,758 INFO L225 Difference]: With dead ends: 2476 [2020-10-29 06:55:43,758 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 06:55:43,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:55:43,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 06:55:43,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-29 06:55:43,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-29 06:55:43,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2726 transitions. [2020-10-29 06:55:43,999 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2726 transitions. Word has length 46 [2020-10-29 06:55:44,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:55:44,001 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2726 transitions. [2020-10-29 06:55:44,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 06:55:44,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2726 transitions. [2020-10-29 06:55:44,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 06:55:44,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:55:44,011 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:44,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:55:44,012 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:55:44,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:55:44,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1926682114, now seen corresponding path program 1 times [2020-10-29 06:55:44,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:55:44,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756478951] [2020-10-29 06:55:44,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:55:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:44,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:44,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:45,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:45,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:45,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:55:45,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:55:45,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1789 [2020-10-29 06:55:45,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:45,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:45,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:55:45,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:55:45,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 06:55:45,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 06:55:46,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:55:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:46,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:46,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:46,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:55:46,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:46,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 06:55:46,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:46,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:46,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:46,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:46,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:55:46,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 06:55:46,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:55:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:46,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:46,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:46,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:46,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 06:55:46,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:55:46,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-29 06:55:46,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:46,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:46,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:46,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:46,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 06:55:46,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:46,310 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:55:46,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756478951] [2020-10-29 06:55:46,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:55:46,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:55:46,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738857608] [2020-10-29 06:55:46,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:55:46,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:55:46,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:55:46,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:55:46,316 INFO L87 Difference]: Start difference. First operand 1554 states and 2726 transitions. Second operand 5 states. [2020-10-29 06:55:58,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:55:58,360 INFO L93 Difference]: Finished difference Result 4670 states and 8255 transitions. [2020-10-29 06:55:58,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:55:58,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-29 06:55:58,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:55:58,386 INFO L225 Difference]: With dead ends: 4670 [2020-10-29 06:55:58,387 INFO L226 Difference]: Without dead ends: 3122 [2020-10-29 06:55:58,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:55:58,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2020-10-29 06:55:58,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 3110. [2020-10-29 06:55:58,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3110 states. [2020-10-29 06:55:58,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 4587 transitions. [2020-10-29 06:55:58,515 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 4587 transitions. Word has length 115 [2020-10-29 06:55:58,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:55:58,518 INFO L481 AbstractCegarLoop]: Abstraction has 3110 states and 4587 transitions. [2020-10-29 06:55:58,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:55:58,518 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 4587 transitions. [2020-10-29 06:55:58,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 06:55:58,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:55:58,531 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:58,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:55:58,531 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:55:58,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:55:58,532 INFO L82 PathProgramCache]: Analyzing trace with hash 215966258, now seen corresponding path program 1 times [2020-10-29 06:55:58,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:55:58,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955275240] [2020-10-29 06:55:58,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:55:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:58,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:58,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:58,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:58,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 06:55:58,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:55:58,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-29 06:55:58,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:58,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:58,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:55:58,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 06:55:58,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 06:55:58,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:59,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:55:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:59,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:59,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:59,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:55:59,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:59,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:55:59,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:59,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:59,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:55:59,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:59,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:55:59,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:59,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:55:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:59,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:59,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:59,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:55:59,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:59,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 06:55:59,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:59,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:59,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:59,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:59,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 06:55:59,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:55:59,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955275240] [2020-10-29 06:55:59,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:55:59,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:55:59,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720760340] [2020-10-29 06:55:59,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:55:59,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:55:59,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:55:59,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:55:59,359 INFO L87 Difference]: Start difference. First operand 3110 states and 4587 transitions. Second operand 5 states. [2020-10-29 06:56:08,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:56:08,628 INFO L93 Difference]: Finished difference Result 6273 states and 9261 transitions. [2020-10-29 06:56:08,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:56:08,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-29 06:56:08,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:56:08,660 INFO L225 Difference]: With dead ends: 6273 [2020-10-29 06:56:08,660 INFO L226 Difference]: Without dead ends: 3122 [2020-10-29 06:56:08,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:56:08,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2020-10-29 06:56:08,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 3110. [2020-10-29 06:56:08,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3110 states. [2020-10-29 06:56:08,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 4335 transitions. [2020-10-29 06:56:08,787 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 4335 transitions. Word has length 121 [2020-10-29 06:56:08,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:56:08,787 INFO L481 AbstractCegarLoop]: Abstraction has 3110 states and 4335 transitions. [2020-10-29 06:56:08,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:56:08,788 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 4335 transitions. [2020-10-29 06:56:08,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 06:56:08,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:56:08,791 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:08,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:56:08,791 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:56:08,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:56:08,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1130242148, now seen corresponding path program 1 times [2020-10-29 06:56:08,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:56:08,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252183766] [2020-10-29 06:56:08,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:56:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:08,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:09,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:09,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:09,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 06:56:09,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:56:09,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1048 [2020-10-29 06:56:09,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:09,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:09,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:56:09,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:56:09,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 06:56:09,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:10,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:56:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:10,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:10,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:10,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:56:10,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:10,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 06:56:10,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:10,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:10,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:56:10,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:10,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:56:10,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:56:10,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:56:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:10,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:10,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:10,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 06:56:10,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:10,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-29 06:56:10,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:10,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:10,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:56:10,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:56:10,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 06:56:10,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 06:56:10,346 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:56:10,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252183766] [2020-10-29 06:56:10,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:56:10,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:56:10,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458765085] [2020-10-29 06:56:10,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:56:10,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:56:10,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:56:10,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:56:10,362 INFO L87 Difference]: Start difference. First operand 3110 states and 4335 transitions. Second operand 7 states. [2020-10-29 06:56:24,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:56:24,422 INFO L93 Difference]: Finished difference Result 9443 states and 13276 transitions. [2020-10-29 06:56:24,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:56:24,423 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-29 06:56:24,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:56:24,461 INFO L225 Difference]: With dead ends: 9443 [2020-10-29 06:56:24,461 INFO L226 Difference]: Without dead ends: 6339 [2020-10-29 06:56:24,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:56:24,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6339 states. [2020-10-29 06:56:24,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6339 to 6273. [2020-10-29 06:56:24,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6273 states. [2020-10-29 06:56:24,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6273 states to 6273 states and 8102 transitions. [2020-10-29 06:56:24,662 INFO L78 Accepts]: Start accepts. Automaton has 6273 states and 8102 transitions. Word has length 122 [2020-10-29 06:56:24,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:56:24,663 INFO L481 AbstractCegarLoop]: Abstraction has 6273 states and 8102 transitions. [2020-10-29 06:56:24,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:56:24,663 INFO L276 IsEmpty]: Start isEmpty. Operand 6273 states and 8102 transitions. [2020-10-29 06:56:24,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 06:56:24,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:56:24,665 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:24,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:56:24,666 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:56:24,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:56:24,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1007667322, now seen corresponding path program 1 times [2020-10-29 06:56:24,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:56:24,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630296669] [2020-10-29 06:56:24,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:56:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:24,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:25,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:25,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:25,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-29 06:56:25,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:56:25,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 968 [2020-10-29 06:56:25,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:25,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:25,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:56:25,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:56:25,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 06:56:25,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:25,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:56:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:25,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:25,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:25,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:56:25,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:25,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 06:56:25,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:25,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:56:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:25,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:56:25,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:25,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:56:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:25,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:26,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:26,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 06:56:26,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:26,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-29 06:56:26,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:26,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:26,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:56:26,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:56:26,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 06:56:26,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:26,231 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:56:26,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630296669] [2020-10-29 06:56:26,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:56:26,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:56:26,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520391883] [2020-10-29 06:56:26,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:56:26,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:56:26,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:56:26,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:56:26,234 INFO L87 Difference]: Start difference. First operand 6273 states and 8102 transitions. Second operand 7 states. [2020-10-29 06:56:42,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:56:42,706 INFO L93 Difference]: Finished difference Result 19124 states and 25222 transitions. [2020-10-29 06:56:42,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:56:42,710 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2020-10-29 06:56:42,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:56:42,794 INFO L225 Difference]: With dead ends: 19124 [2020-10-29 06:56:42,795 INFO L226 Difference]: Without dead ends: 12857 [2020-10-29 06:56:42,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 06:56:42,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12857 states. [2020-10-29 06:56:43,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12857 to 11942. [2020-10-29 06:56:43,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11942 states. [2020-10-29 06:56:43,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11942 states to 11942 states and 14723 transitions. [2020-10-29 06:56:43,261 INFO L78 Accepts]: Start accepts. Automaton has 11942 states and 14723 transitions. Word has length 149 [2020-10-29 06:56:43,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:56:43,263 INFO L481 AbstractCegarLoop]: Abstraction has 11942 states and 14723 transitions. [2020-10-29 06:56:43,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:56:43,263 INFO L276 IsEmpty]: Start isEmpty. Operand 11942 states and 14723 transitions. [2020-10-29 06:56:43,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-29 06:56:43,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:56:43,270 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:56:43,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:56:43,270 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:56:43,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:56:43,271 INFO L82 PathProgramCache]: Analyzing trace with hash -2001222716, now seen corresponding path program 1 times [2020-10-29 06:56:43,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:56:43,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316591014] [2020-10-29 06:56:43,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:56:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:43,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:43,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:43,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:46,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:46,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:46,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-29 06:56:46,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:56:46,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3086 [2020-10-29 06:56:46,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:46,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:46,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:56:46,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:56:46,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-29 06:56:46,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:46,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:56:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:46,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:46,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:46,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:56:46,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:46,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 06:56:46,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:46,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:46,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:56:46,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:46,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:56:46,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:46,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:56:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:46,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:46,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:47,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:47,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 06:56:47,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:56:47,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-29 06:56:47,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:47,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:47,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:56:47,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:47,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 06:56:47,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:47,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 06:56:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:47,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:47,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:47,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:47,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:56:47,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:56:47,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-29 06:56:47,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:47,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:47,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:56:47,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:47,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 06:56:47,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:56:47,591 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 68 proven. 11 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 06:56:47,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316591014] [2020-10-29 06:56:47,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:56:47,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:56:47,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035110638] [2020-10-29 06:56:47,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:56:47,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:56:47,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:56:47,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:56:47,595 INFO L87 Difference]: Start difference. First operand 11942 states and 14723 transitions. Second operand 7 states. [2020-10-29 06:56:47,771 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-29 06:57:12,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:57:12,523 INFO L93 Difference]: Finished difference Result 38728 states and 49669 transitions. [2020-10-29 06:57:12,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:57:12,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2020-10-29 06:57:12,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:57:12,617 INFO L225 Difference]: With dead ends: 38728 [2020-10-29 06:57:12,618 INFO L226 Difference]: Without dead ends: 26792 [2020-10-29 06:57:12,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:57:12,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26792 states. [2020-10-29 06:57:13,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26792 to 24456. [2020-10-29 06:57:13,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24456 states. [2020-10-29 06:57:13,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24456 states to 24456 states and 31395 transitions. [2020-10-29 06:57:13,275 INFO L78 Accepts]: Start accepts. Automaton has 24456 states and 31395 transitions. Word has length 280 [2020-10-29 06:57:13,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:57:13,276 INFO L481 AbstractCegarLoop]: Abstraction has 24456 states and 31395 transitions. [2020-10-29 06:57:13,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:57:13,276 INFO L276 IsEmpty]: Start isEmpty. Operand 24456 states and 31395 transitions. [2020-10-29 06:57:13,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-29 06:57:13,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:57:13,283 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:57:13,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:57:13,283 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:57:13,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:57:13,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1191376562, now seen corresponding path program 1 times [2020-10-29 06:57:13,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:57:13,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101200712] [2020-10-29 06:57:13,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:57:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:13,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:13,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:15,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:18,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:18,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-29 06:57:18,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:57:18,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 06:57:18,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:18,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:57:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:57:18,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 06:57:18,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:57:18,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:57:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:18,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:18,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:18,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:57:18,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:18,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 06:57:18,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:18,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:18,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:57:18,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:18,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:57:18,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:18,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:57:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:18,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:18,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:18,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 06:57:18,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:18,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-29 06:57:18,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:18,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:18,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:57:18,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:57:18,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 06:57:18,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:19,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-29 06:57:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:19,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:19,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:19,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 06:57:19,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:19,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 06:57:19,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:19,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:19,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:57:19,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-29 06:57:19,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:57:19,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:19,470 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 76 proven. 92 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 06:57:19,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101200712] [2020-10-29 06:57:19,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:57:19,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:57:19,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959515210] [2020-10-29 06:57:19,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:57:19,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:57:19,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:57:19,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:57:19,475 INFO L87 Difference]: Start difference. First operand 24456 states and 31395 transitions. Second operand 7 states. [2020-10-29 06:57:19,645 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-29 06:57:23,100 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 06:57:34,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:57:34,832 INFO L93 Difference]: Finished difference Result 52405 states and 68004 transitions. [2020-10-29 06:57:34,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:57:34,835 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2020-10-29 06:57:34,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:57:34,958 INFO L225 Difference]: With dead ends: 52405 [2020-10-29 06:57:34,958 INFO L226 Difference]: Without dead ends: 28722 [2020-10-29 06:57:35,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:57:35,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28722 states. [2020-10-29 06:57:35,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28722 to 28581. [2020-10-29 06:57:35,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28581 states. [2020-10-29 06:57:35,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28581 states to 28581 states and 36349 transitions. [2020-10-29 06:57:35,891 INFO L78 Accepts]: Start accepts. Automaton has 28581 states and 36349 transitions. Word has length 291 [2020-10-29 06:57:35,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:57:35,892 INFO L481 AbstractCegarLoop]: Abstraction has 28581 states and 36349 transitions. [2020-10-29 06:57:35,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:57:35,892 INFO L276 IsEmpty]: Start isEmpty. Operand 28581 states and 36349 transitions. [2020-10-29 06:57:35,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-29 06:57:35,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:57:35,903 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:35,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:57:35,903 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:57:35,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:57:35,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1485763222, now seen corresponding path program 1 times [2020-10-29 06:57:35,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:57:35,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093865609] [2020-10-29 06:57:35,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:57:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:36,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:36,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:36,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:37,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:41,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:41,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-29 06:57:41,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:57:41,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-29 06:57:41,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:41,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:41,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:57:41,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 06:57:41,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-29 06:57:41,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:41,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:57:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:41,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:41,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:41,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:57:41,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:41,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 06:57:41,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:41,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:41,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:57:41,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:41,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:57:41,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:41,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:57:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:41,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:41,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:41,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 06:57:41,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:41,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-29 06:57:41,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:41,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:57:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 06:57:41,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:41,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 06:57:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:41,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:41,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:41,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:57:41,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:41,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 06:57:41,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:41,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:41,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:57:41,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:57:41,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 06:57:41,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:41,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-29 06:57:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:41,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:41,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:41,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 06:57:41,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:41,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-29 06:57:41,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:41,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:41,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:57:41,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:57:41,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 06:57:41,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:42,101 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 294 proven. 88 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 06:57:42,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093865609] [2020-10-29 06:57:42,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:57:42,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:57:42,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249577703] [2020-10-29 06:57:42,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:57:42,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:57:42,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:57:42,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:57:42,104 INFO L87 Difference]: Start difference. First operand 28581 states and 36349 transitions. Second operand 8 states. [2020-10-29 06:58:00,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:58:00,916 INFO L93 Difference]: Finished difference Result 71740 states and 96203 transitions. [2020-10-29 06:58:00,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 06:58:00,918 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 377 [2020-10-29 06:58:00,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:58:01,092 INFO L225 Difference]: With dead ends: 71740 [2020-10-29 06:58:01,093 INFO L226 Difference]: Without dead ends: 43932 [2020-10-29 06:58:01,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-29 06:58:01,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43932 states. [2020-10-29 06:58:02,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43932 to 43742. [2020-10-29 06:58:02,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43742 states. [2020-10-29 06:58:02,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43742 states to 43742 states and 57060 transitions. [2020-10-29 06:58:02,507 INFO L78 Accepts]: Start accepts. Automaton has 43742 states and 57060 transitions. Word has length 377 [2020-10-29 06:58:02,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:58:02,508 INFO L481 AbstractCegarLoop]: Abstraction has 43742 states and 57060 transitions. [2020-10-29 06:58:02,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:58:02,508 INFO L276 IsEmpty]: Start isEmpty. Operand 43742 states and 57060 transitions. [2020-10-29 06:58:02,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2020-10-29 06:58:02,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:58:02,520 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:58:02,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 06:58:02,520 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:58:02,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:58:02,521 INFO L82 PathProgramCache]: Analyzing trace with hash -768134642, now seen corresponding path program 1 times [2020-10-29 06:58:02,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:58:02,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577048782] [2020-10-29 06:58:02,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:58:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:02,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:02,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:03,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:05,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:07,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:07,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-29 06:58:07,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:58:07,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 06:58:07,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:07,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:07,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:58:07,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-29 06:58:07,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-29 06:58:07,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:07,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:58:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:07,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:07,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:07,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:58:07,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:07,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 06:58:07,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:07,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:07,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:58:07,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:07,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:58:07,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:07,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:58:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:07,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:08,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:08,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 06:58:08,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:08,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-29 06:58:08,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:08,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:08,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:58:08,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:08,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 06:58:08,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:58:08,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 06:58:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:08,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:08,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:08,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:08,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:58:08,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:58:08,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-29 06:58:08,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:08,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:08,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:58:08,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:08,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 06:58:08,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:08,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-29 06:58:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:08,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:08,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:08,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 06:58:08,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:08,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 06:58:08,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:08,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:08,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:58:08,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:58:08,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 06:58:08,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:08,598 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 294 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-29 06:58:08,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577048782] [2020-10-29 06:58:08,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:58:08,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:58:08,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520915010] [2020-10-29 06:58:08,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:58:08,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:58:08,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:58:08,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:58:08,603 INFO L87 Difference]: Start difference. First operand 43742 states and 57060 transitions. Second operand 7 states. [2020-10-29 06:58:31,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:58:31,677 INFO L93 Difference]: Finished difference Result 99892 states and 134584 transitions. [2020-10-29 06:58:31,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:58:31,679 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 381 [2020-10-29 06:58:31,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:58:31,924 INFO L225 Difference]: With dead ends: 99892 [2020-10-29 06:58:31,924 INFO L226 Difference]: Without dead ends: 56923 [2020-10-29 06:58:32,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:58:32,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56923 states. [2020-10-29 06:58:33,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56923 to 56764. [2020-10-29 06:58:33,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56764 states. [2020-10-29 06:58:34,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56764 states to 56764 states and 74738 transitions. [2020-10-29 06:58:34,257 INFO L78 Accepts]: Start accepts. Automaton has 56764 states and 74738 transitions. Word has length 381 [2020-10-29 06:58:34,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:58:34,258 INFO L481 AbstractCegarLoop]: Abstraction has 56764 states and 74738 transitions. [2020-10-29 06:58:34,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:58:34,258 INFO L276 IsEmpty]: Start isEmpty. Operand 56764 states and 74738 transitions. [2020-10-29 06:58:34,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-10-29 06:58:34,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:58:34,270 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:58:34,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 06:58:34,271 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:58:34,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:58:34,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1190266224, now seen corresponding path program 1 times [2020-10-29 06:58:34,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:58:34,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515047260] [2020-10-29 06:58:34,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:58:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:34,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:34,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:35,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:37,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:38,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:38,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 398 [2020-10-29 06:58:38,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:58:38,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4123 [2020-10-29 06:58:38,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:38,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:38,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 06:58:38,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-29 06:58:38,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-29 06:58:38,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:38,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:58:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:38,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:38,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:38,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:58:38,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:38,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:58:38,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:38,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:58:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:58:38,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:38,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:58:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:38,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:38,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:38,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 06:58:38,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:38,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-29 06:58:38,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:38,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:38,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:58:38,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:38,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 06:58:38,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:39,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 06:58:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:39,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:39,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:39,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:39,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 06:58:39,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:58:39,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-29 06:58:39,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:39,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:39,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:58:39,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:39,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 06:58:39,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:39,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 06:58:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:39,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:39,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:39,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 06:58:39,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:39,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 06:58:39,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:39,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:39,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:58:39,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:58:39,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 06:58:39,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:39,699 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 263 proven. 38 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-29 06:58:39,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515047260] [2020-10-29 06:58:39,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:58:39,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 06:58:39,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775498985] [2020-10-29 06:58:39,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 06:58:39,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:58:39,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 06:58:39,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:58:39,701 INFO L87 Difference]: Start difference. First operand 56764 states and 74738 transitions. Second operand 10 states. [2020-10-29 06:58:39,849 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 06:58:45,272 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-29 06:58:48,316 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 66