/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/Problem06_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:42:33,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:42:33,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:42:33,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:42:33,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:42:33,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:42:33,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:42:33,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:42:33,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:42:33,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:42:33,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:42:33,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:42:33,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:42:33,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:42:33,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:42:33,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:42:33,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:42:33,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:42:33,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:42:33,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:42:33,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:42:33,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:42:33,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:42:33,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:42:33,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:42:33,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:42:33,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:42:33,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:42:33,163 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:42:33,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:42:33,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:42:33,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:42:33,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:42:33,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:42:33,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:42:33,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:42:33,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:42:33,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:42:33,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:42:33,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:42:33,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:42:33,176 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 05:42:33,234 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:42:33,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:42:33,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:42:33,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:42:33,239 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:42:33,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:42:33,239 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:42:33,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:42:33,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:42:33,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:42:33,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:42:33,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:42:33,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:42:33,242 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:42:33,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:42:33,243 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:42:33,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:42:33,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:42:33,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:42:33,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:42:33,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:42:33,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:42:33,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:42:33,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:42:33,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:42:33,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:42:33,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:42:33,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:42:33,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:42:33,247 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:42:33,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:42:33,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:42:33,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:42:33,757 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:42:33,758 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:42:33,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label34.c [2020-10-29 05:42:33,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c4bd216e/86d03e313fc14eef8f534e5105fc502e/FLAGed4fba7a7 [2020-10-29 05:42:35,046 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:42:35,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label34.c [2020-10-29 05:42:35,101 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c4bd216e/86d03e313fc14eef8f534e5105fc502e/FLAGed4fba7a7 [2020-10-29 05:42:35,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c4bd216e/86d03e313fc14eef8f534e5105fc502e [2020-10-29 05:42:35,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:42:35,345 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:42:35,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:42:35,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:42:35,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:42:35,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:42:35" (1/1) ... [2020-10-29 05:42:35,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57081640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:35, skipping insertion in model container [2020-10-29 05:42:35,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:42:35" (1/1) ... [2020-10-29 05:42:35,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:42:35,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:42:37,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:42:37,751 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:42:38,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:42:38,979 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:42:38,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:38 WrapperNode [2020-10-29 05:42:38,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:42:38,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:42:38,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:42:38,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:42:38,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:38" (1/1) ... [2020-10-29 05:42:38,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:38" (1/1) ... [2020-10-29 05:42:39,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:38" (1/1) ... [2020-10-29 05:42:39,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:38" (1/1) ... [2020-10-29 05:42:39,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:38" (1/1) ... [2020-10-29 05:42:39,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:38" (1/1) ... [2020-10-29 05:42:39,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:38" (1/1) ... [2020-10-29 05:42:39,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:42:39,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:42:39,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:42:39,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:42:39,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:42:39,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:42:39,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:42:39,555 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:42:39,555 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:42:39,556 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:42:39,556 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:42:39,556 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:42:39,556 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:42:39,556 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:42:39,556 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:42:39,557 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:42:39,557 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:42:39,557 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:42:39,557 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:42:39,557 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:42:39,557 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:42:39,671 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:42:39,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:42:39,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:42:39,671 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:42:39,672 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:42:39,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:42:39,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:42:39,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:42:39,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:42:39,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:42:39,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:42:48,186 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:42:48,187 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:42:48,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:42:48 BoogieIcfgContainer [2020-10-29 05:42:48,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:42:48,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:42:48,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:42:48,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:42:48,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:42:35" (1/3) ... [2020-10-29 05:42:48,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9ece81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:42:48, skipping insertion in model container [2020-10-29 05:42:48,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:42:38" (2/3) ... [2020-10-29 05:42:48,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9ece81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:42:48, skipping insertion in model container [2020-10-29 05:42:48,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:42:48" (3/3) ... [2020-10-29 05:42:48,203 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label34.c [2020-10-29 05:42:48,218 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:42:48,225 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:42:48,242 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:42:48,280 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:42:48,280 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:42:48,281 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:42:48,281 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:42:48,281 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:42:48,281 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:42:48,281 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:42:48,281 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:42:48,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-29 05:42:48,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2020-10-29 05:42:48,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:42:48,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:42:48,405 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:42:48,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:42:48,413 INFO L82 PathProgramCache]: Analyzing trace with hash -397649072, now seen corresponding path program 1 times [2020-10-29 05:42:48,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:42:48,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259756199] [2020-10-29 05:42:48,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:42:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:42:50,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:53,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:54,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:42:54,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1012 [2020-10-29 05:42:54,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:42:54,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-29 05:42:54,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:42:54,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:42:54,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 05:42:54,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:42:54,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1003 [2020-10-29 05:42:54,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 05:42:56,125 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:42:56,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:42:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:42:56,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:56,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:42:56,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:42:56,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:42:56,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 05:42:56,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:42:56,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:42:56,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:42:56,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:42:56,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:42:56,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:42:57,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:42:57,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259756199] [2020-10-29 05:42:57,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:42:57,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:42:57,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407805876] [2020-10-29 05:42:57,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:42:57,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:42:57,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:42:57,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:42:57,881 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 4 states. [2020-10-29 05:42:58,113 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:43:15,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:43:15,408 INFO L93 Difference]: Finished difference Result 3770 states and 7012 transitions. [2020-10-29 05:43:15,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:43:15,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 994 [2020-10-29 05:43:15,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:43:15,453 INFO L225 Difference]: With dead ends: 3770 [2020-10-29 05:43:15,453 INFO L226 Difference]: Without dead ends: 2387 [2020-10-29 05:43:15,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:43:15,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2387 states. [2020-10-29 05:43:15,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2387 to 2374. [2020-10-29 05:43:15,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2374 states. [2020-10-29 05:43:15,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3972 transitions. [2020-10-29 05:43:15,659 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3972 transitions. Word has length 994 [2020-10-29 05:43:15,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:43:15,663 INFO L481 AbstractCegarLoop]: Abstraction has 2374 states and 3972 transitions. [2020-10-29 05:43:15,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:43:15,664 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3972 transitions. [2020-10-29 05:43:15,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1007 [2020-10-29 05:43:15,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:43:15,716 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:43:15,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:43:15,716 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:43:15,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:43:15,721 INFO L82 PathProgramCache]: Analyzing trace with hash 217373385, now seen corresponding path program 1 times [2020-10-29 05:43:15,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:43:15,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973143098] [2020-10-29 05:43:15,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:43:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:43:15,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:18,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:21,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:43:21,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1026 [2020-10-29 05:43:21,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:43:21,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5237 [2020-10-29 05:43:21,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:43:21,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:43:21,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:43:21,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 05:43:21,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1000 [2020-10-29 05:43:21,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:43:22,347 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:43:22,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:43:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:43:22,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:22,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:43:22,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:43:22,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:43:22,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:43:22,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:43:22,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:43:22,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:43:22,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:43:22,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:43:22,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:43:22,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:43:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:43:22,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:22,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:43:22,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:43:22,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:43:22,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:43:22,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:43:22,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:43:22,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:43:22,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:43:22,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 05:43:22,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:43:23,472 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:43:23,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973143098] [2020-10-29 05:43:23,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:43:23,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:43:23,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135346434] [2020-10-29 05:43:23,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:43:23,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:43:23,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:43:23,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:43:23,478 INFO L87 Difference]: Start difference. First operand 2374 states and 3972 transitions. Second operand 5 states. [2020-10-29 05:43:23,947 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:43:42,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:43:42,973 INFO L93 Difference]: Finished difference Result 6855 states and 11619 transitions. [2020-10-29 05:43:42,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:43:42,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1006 [2020-10-29 05:43:42,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:43:43,007 INFO L225 Difference]: With dead ends: 6855 [2020-10-29 05:43:43,008 INFO L226 Difference]: Without dead ends: 4487 [2020-10-29 05:43:43,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:43:43,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4487 states. [2020-10-29 05:43:43,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4487 to 4459. [2020-10-29 05:43:43,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4459 states. [2020-10-29 05:43:43,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4459 states to 4459 states and 6888 transitions. [2020-10-29 05:43:43,152 INFO L78 Accepts]: Start accepts. Automaton has 4459 states and 6888 transitions. Word has length 1006 [2020-10-29 05:43:43,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:43:43,154 INFO L481 AbstractCegarLoop]: Abstraction has 4459 states and 6888 transitions. [2020-10-29 05:43:43,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:43:43,155 INFO L276 IsEmpty]: Start isEmpty. Operand 4459 states and 6888 transitions. [2020-10-29 05:43:43,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1011 [2020-10-29 05:43:43,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:43:43,210 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:43:43,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:43:43,211 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:43:43,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:43:43,212 INFO L82 PathProgramCache]: Analyzing trace with hash 636673025, now seen corresponding path program 1 times [2020-10-29 05:43:43,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:43:43,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129709650] [2020-10-29 05:43:43,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:43:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:43:43,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:43,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:48,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:43:48,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1030 [2020-10-29 05:43:48,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:43:48,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5230 [2020-10-29 05:43:48,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:43:48,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:43:48,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 05:43:48,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:43:48,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 919 [2020-10-29 05:43:48,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:43:54,648 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-29 05:43:54,858 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2020-10-29 05:43:55,266 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 77 [2020-10-29 05:43:55,683 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 77 [2020-10-29 05:43:56,053 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2020-10-29 05:43:56,485 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 64 [2020-10-29 05:43:56,808 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 64 [2020-10-29 05:43:57,253 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 67 [2020-10-29 05:43:57,616 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 68 [2020-10-29 05:43:57,965 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2020-10-29 05:43:58,609 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 73 [2020-10-29 05:43:58,923 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 58 [2020-10-29 05:43:59,199 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 59 [2020-10-29 05:43:59,486 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 61 [2020-10-29 05:43:59,834 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 56 [2020-10-29 05:44:00,133 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:44:00,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:44:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:44:00,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:44:00,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:44:00,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:44:00,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:44:00,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 05:44:00,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:44:00,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:44:00,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:44:00,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:44:00,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:44:00,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:44:00,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:44:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:44:00,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:44:00,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:44:00,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:44:00,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:44:00,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:44:00,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 05:44:00,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:44:00,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:44:00,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:44:00,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:44:00,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 05:44:00,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:44:18,001 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:44:18,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129709650] [2020-10-29 05:44:18,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:44:18,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 05:44:18,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641503587] [2020-10-29 05:44:18,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 05:44:18,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:44:18,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 05:44:18,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2020-10-29 05:44:18,018 INFO L87 Difference]: Start difference. First operand 4459 states and 6888 transitions. Second operand 22 states. [2020-10-29 05:44:18,506 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 05:44:21,110 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:45:15,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:45:15,437 INFO L93 Difference]: Finished difference Result 11144 states and 17736 transitions. [2020-10-29 05:45:15,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:45:15,438 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 1010 [2020-10-29 05:45:15,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:45:15,481 INFO L225 Difference]: With dead ends: 11144 [2020-10-29 05:45:15,481 INFO L226 Difference]: Without dead ends: 6691 [2020-10-29 05:45:15,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2020-10-29 05:45:15,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6691 states. [2020-10-29 05:45:15,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6691 to 6631. [2020-10-29 05:45:15,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6631 states. [2020-10-29 05:45:15,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6631 states to 6631 states and 9304 transitions. [2020-10-29 05:45:15,716 INFO L78 Accepts]: Start accepts. Automaton has 6631 states and 9304 transitions. Word has length 1010 [2020-10-29 05:45:15,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:45:15,717 INFO L481 AbstractCegarLoop]: Abstraction has 6631 states and 9304 transitions. [2020-10-29 05:45:15,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 05:45:15,717 INFO L276 IsEmpty]: Start isEmpty. Operand 6631 states and 9304 transitions. [2020-10-29 05:45:15,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2020-10-29 05:45:15,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:45:15,747 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:45:15,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:45:15,747 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:45:15,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:45:15,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1622082647, now seen corresponding path program 1 times [2020-10-29 05:45:15,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:45:15,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633082472] [2020-10-29 05:45:15,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:45:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:15,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:18,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:19,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:21,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:21,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1081 [2020-10-29 05:45:21,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:45:21,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5248 [2020-10-29 05:45:21,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:21,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:21,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:45:21,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-29 05:45:21,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1000 [2020-10-29 05:45:21,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:45:22,152 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:45:22,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:45:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:22,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:22,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:22,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:45:22,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:45:22,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:45:22,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:22,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:22,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:45:22,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:45:22,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:45:22,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:45:22,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:45:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:22,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:22,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:22,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 05:45:22,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:45:22,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:45:22,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:22,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:22,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:45:22,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:45:22,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:45:22,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:45:22,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 05:45:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:22,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:22,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:22,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:45:22,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:45:22,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 05:45:22,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:22,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:22,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:45:22,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:45:22,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 05:45:22,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:45:23,390 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 05:45:23,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633082472] [2020-10-29 05:45:23,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:45:23,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:45:23,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732889689] [2020-10-29 05:45:23,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:45:23,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:45:23,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:45:23,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:45:23,393 INFO L87 Difference]: Start difference. First operand 6631 states and 9304 transitions. Second operand 5 states. [2020-10-29 05:45:24,049 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:45:42,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:45:42,638 INFO L93 Difference]: Finished difference Result 15574 states and 23546 transitions. [2020-10-29 05:45:42,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:45:42,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1059 [2020-10-29 05:45:42,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:45:42,698 INFO L225 Difference]: With dead ends: 15574 [2020-10-29 05:45:42,699 INFO L226 Difference]: Without dead ends: 11010 [2020-10-29 05:45:42,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:45:42,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11010 states. [2020-10-29 05:45:43,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11010 to 10938. [2020-10-29 05:45:43,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10938 states. [2020-10-29 05:45:43,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10938 states to 10938 states and 15511 transitions. [2020-10-29 05:45:43,041 INFO L78 Accepts]: Start accepts. Automaton has 10938 states and 15511 transitions. Word has length 1059 [2020-10-29 05:45:43,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:45:43,044 INFO L481 AbstractCegarLoop]: Abstraction has 10938 states and 15511 transitions. [2020-10-29 05:45:43,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:45:43,044 INFO L276 IsEmpty]: Start isEmpty. Operand 10938 states and 15511 transitions. [2020-10-29 05:45:43,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1079 [2020-10-29 05:45:43,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:45:43,094 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:45:43,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:45:43,095 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:45:43,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:45:43,096 INFO L82 PathProgramCache]: Analyzing trace with hash 236629935, now seen corresponding path program 1 times [2020-10-29 05:45:43,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:45:43,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206449094] [2020-10-29 05:45:43,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:45:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:43,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:43,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:48,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:48,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1102 [2020-10-29 05:45:48,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:45:48,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-29 05:45:48,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:48,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:48,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:45:48,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:45:48,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 05:45:48,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:45:48,840 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:45:48,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:45:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:48,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:48,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:48,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:45:48,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:45:48,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:45:48,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:48,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:48,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:45:48,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:45:48,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:45:48,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:45:48,987 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:45:48,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:45:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:49,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:49,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:49,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 05:45:49,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:45:49,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 05:45:49,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:49,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:49,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:45:49,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:45:49,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 05:45:49,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:45:49,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 05:45:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:49,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:49,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:49,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:45:49,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:45:49,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:45:49,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:49,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:49,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:45:49,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 05:45:49,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:45:49,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:45:49,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 05:45:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:45:49,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:45:49,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:45:49,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 05:45:49,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:45:49,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:45:49,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:45:49,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:45:49,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:45:49,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 05:45:49,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:45:49,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:45:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 75 proven. 26 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-29 05:45:50,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206449094] [2020-10-29 05:45:50,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:45:50,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:45:50,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118413673] [2020-10-29 05:45:50,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:45:50,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:45:50,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:45:50,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:45:50,299 INFO L87 Difference]: Start difference. First operand 10938 states and 15511 transitions. Second operand 7 states. [2020-10-29 05:45:50,618 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:45:51,798 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 162