/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=DEEPEST --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_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:38:11,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:38:11,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:38:11,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:38:11,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:38:11,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:38:11,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:38:11,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:38:11,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:38:11,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:38:11,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:38:11,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:38:11,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:38:11,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:38:11,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:38:11,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:38:11,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:38:11,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:38:11,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:38:11,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:38:11,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:38:11,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:38:11,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:38:11,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:38:11,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:38:11,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:38:11,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:38:11,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:38:11,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:38:11,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:38:11,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:38:11,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:38:11,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:38:11,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:38:11,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:38:11,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:38:11,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:38:11,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:38:11,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:38:11,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:38:11,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:38:11,164 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 [2020-10-27 17:38:11,191 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:38:11,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:38:11,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:38:11,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:38:11,194 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:38:11,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:38:11,195 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:38:11,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:38:11,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:38:11,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:38:11,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:38:11,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:38:11,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:38:11,196 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:38:11,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:38:11,197 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:38:11,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:38:11,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:38:11,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:38:11,198 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:38:11,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:38:11,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:38:11,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:38:11,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:38:11,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:38:11,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:38:11,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:38:11,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:38:11,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:38:11,201 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:38:11,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:38:11,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:38:11,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:38:11,708 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:38:11,709 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:38:11,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label03.c [2020-10-27 17:38:11,805 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6a7bb3d9/f5d13c15ab2242f192ab98fc3231d6aa/FLAG157dcf1b7 [2020-10-27 17:38:12,923 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:38:12,923 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label03.c [2020-10-27 17:38:12,969 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6a7bb3d9/f5d13c15ab2242f192ab98fc3231d6aa/FLAG157dcf1b7 [2020-10-27 17:38:13,382 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6a7bb3d9/f5d13c15ab2242f192ab98fc3231d6aa [2020-10-27 17:38:13,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:38:13,392 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:38:13,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:38:13,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:38:13,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:38:13,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:38:13" (1/1) ... [2020-10-27 17:38:13,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10be05a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:38:13, skipping insertion in model container [2020-10-27 17:38:13,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:38:13" (1/1) ... [2020-10-27 17:38:13,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:38:13,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:38:15,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:38:15,070 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:38:15,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:38:15,816 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:38:15,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:38:15 WrapperNode [2020-10-27 17:38:15,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:38:15,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:38:15,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:38:15,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:38:15,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:38:15" (1/1) ... [2020-10-27 17:38:15,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:38:15" (1/1) ... [2020-10-27 17:38:15,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:38:15" (1/1) ... [2020-10-27 17:38:15,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:38:15" (1/1) ... [2020-10-27 17:38:16,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:38:15" (1/1) ... [2020-10-27 17:38:16,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:38:15" (1/1) ... [2020-10-27 17:38:16,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:38:15" (1/1) ... [2020-10-27 17:38:16,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:38:16,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:38:16,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:38:16,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:38:16,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:38:15" (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 [2020-10-27 17:38:16,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:38:16,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:38:16,269 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:38:16,269 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:38:16,270 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 17:38:16,270 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 17:38:16,270 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 17:38:16,270 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:38:16,271 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:38:16,271 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 17:38:16,272 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 17:38:16,272 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 17:38:16,272 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:38:16,272 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:38:16,272 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:38:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:38:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:38:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:38:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:38:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:38:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:38:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:38:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:38:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:38:16,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:38:22,359 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:38:22,360 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:38:22,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:38:22 BoogieIcfgContainer [2020-10-27 17:38:22,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:38:22,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:38:22,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:38:22,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:38:22,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:38:13" (1/3) ... [2020-10-27 17:38:22,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1754e9eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:38:22, skipping insertion in model container [2020-10-27 17:38:22,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:38:15" (2/3) ... [2020-10-27 17:38:22,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1754e9eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:38:22, skipping insertion in model container [2020-10-27 17:38:22,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:38:22" (3/3) ... [2020-10-27 17:38:22,387 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label03.c [2020-10-27 17:38:22,403 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:38:22,410 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:38:22,426 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:38:22,477 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:38:22,477 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:38:22,477 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:38:22,477 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:38:22,477 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:38:22,477 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:38:22,478 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:38:22,478 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:38:22,528 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-27 17:38:22,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 17:38:22,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:38:22,544 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] [2020-10-27 17:38:22,545 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:38:22,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:38:22,555 INFO L82 PathProgramCache]: Analyzing trace with hash 925984196, now seen corresponding path program 1 times [2020-10-27 17:38:22,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:38:22,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127279864] [2020-10-27 17:38:22,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:38:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:22,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:23,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:23,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 17:38:23,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:23,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-10-27 17:38:23,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:23,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:38:23,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:38:23,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 17:38:23,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 17:38:23,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:38:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:23,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:23,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:23,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:38:23,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:23,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 17:38:23,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:23,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:38:23,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:23,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:38:23,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:23,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:38:23,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127279864] [2020-10-27 17:38:23,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:38:23,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 17:38:23,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795261088] [2020-10-27 17:38:23,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 17:38:23,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:38:23,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 17:38:23,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 17:38:23,514 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-27 17:38:23,681 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 17:38:34,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:38:34,792 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-27 17:38:34,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:38:34,795 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-27 17:38:34,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:38:34,829 INFO L225 Difference]: With dead ends: 2476 [2020-10-27 17:38:34,829 INFO L226 Difference]: Without dead ends: 1569 [2020-10-27 17:38:34,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:38:34,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-27 17:38:35,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-27 17:38:35,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-27 17:38:35,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2834 transitions. [2020-10-27 17:38:35,038 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2834 transitions. Word has length 26 [2020-10-27 17:38:35,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:38:35,039 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2834 transitions. [2020-10-27 17:38:35,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 17:38:35,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2834 transitions. [2020-10-27 17:38:35,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 17:38:35,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:38:35,050 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:38:35,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:38:35,051 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:38:35,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:38:35,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1825620838, now seen corresponding path program 1 times [2020-10-27 17:38:35,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:38:35,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128337513] [2020-10-27 17:38:35,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:38:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:35,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:35,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:36,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:36,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 17:38:36,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:38:36,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1444 [2020-10-27 17:38:36,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-27 17:38:36,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 17:38:36,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:38:36,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:38:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:36,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:36,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:36,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:38:36,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:36,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:38:36,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:36,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:36,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:36,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:36,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 17:38:36,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:38:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:36,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:36,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:36,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 17:38:36,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:36,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 17:38:36,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:36,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:38:36,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:36,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 17:38:36,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:36,900 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:38:36,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128337513] [2020-10-27 17:38:36,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:38:36,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:38:36,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841685536] [2020-10-27 17:38:36,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:38:36,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:38:36,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:38:36,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:38:36,907 INFO L87 Difference]: Start difference. First operand 1554 states and 2834 transitions. Second operand 5 states. [2020-10-27 17:38:52,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:38:52,602 INFO L93 Difference]: Finished difference Result 4674 states and 8594 transitions. [2020-10-27 17:38:52,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:38:52,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-27 17:38:52,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:38:52,625 INFO L225 Difference]: With dead ends: 4674 [2020-10-27 17:38:52,625 INFO L226 Difference]: Without dead ends: 3126 [2020-10-27 17:38:52,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:38:52,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2020-10-27 17:38:52,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 3109. [2020-10-27 17:38:52,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3109 states. [2020-10-27 17:38:52,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 4807 transitions. [2020-10-27 17:38:52,744 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 4807 transitions. Word has length 99 [2020-10-27 17:38:52,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:38:52,745 INFO L481 AbstractCegarLoop]: Abstraction has 3109 states and 4807 transitions. [2020-10-27 17:38:52,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:38:52,745 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 4807 transitions. [2020-10-27 17:38:52,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 17:38:52,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:38:52,748 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:38:52,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:38:52,749 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:38:52,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:38:52,749 INFO L82 PathProgramCache]: Analyzing trace with hash -574039006, now seen corresponding path program 1 times [2020-10-27 17:38:52,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:38:52,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042529809] [2020-10-27 17:38:52,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:38:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:52,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:52,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:53,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:53,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 17:38:53,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:38:53,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 761 [2020-10-27 17:38:53,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 17:38:53,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 17:38:53,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:53,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:38:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:53,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:53,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:53,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:38:53,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:53,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:38:53,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:53,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:53,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:53,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:53,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:53,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:38:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:53,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:53,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:53,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:38:53,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:53,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 17:38:53,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:38:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 17:38:53,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:53,879 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:38:53,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042529809] [2020-10-27 17:38:53,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:38:53,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:38:53,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206161435] [2020-10-27 17:38:53,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:38:53,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:38:53,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:38:53,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:38:53,882 INFO L87 Difference]: Start difference. First operand 3109 states and 4807 transitions. Second operand 5 states. [2020-10-27 17:39:07,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:39:07,603 INFO L93 Difference]: Finished difference Result 9334 states and 14626 transitions. [2020-10-27 17:39:07,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:39:07,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-27 17:39:07,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:39:07,653 INFO L225 Difference]: With dead ends: 9334 [2020-10-27 17:39:07,653 INFO L226 Difference]: Without dead ends: 6231 [2020-10-27 17:39:07,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:39:07,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6231 states. [2020-10-27 17:39:07,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6231 to 6227. [2020-10-27 17:39:07,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6227 states. [2020-10-27 17:39:07,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6227 states to 6227 states and 8655 transitions. [2020-10-27 17:39:07,887 INFO L78 Accepts]: Start accepts. Automaton has 6227 states and 8655 transitions. Word has length 101 [2020-10-27 17:39:07,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:39:07,888 INFO L481 AbstractCegarLoop]: Abstraction has 6227 states and 8655 transitions. [2020-10-27 17:39:07,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:39:07,888 INFO L276 IsEmpty]: Start isEmpty. Operand 6227 states and 8655 transitions. [2020-10-27 17:39:07,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-27 17:39:07,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:39:07,900 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:39:07,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:39:07,904 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:39:07,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:39:07,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1352066646, now seen corresponding path program 1 times [2020-10-27 17:39:07,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:39:07,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129568804] [2020-10-27 17:39:07,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:39:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:08,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:08,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:08,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:08,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 17:39:08,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:39:08,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-10-27 17:39:08,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:08,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:08,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-27 17:39:08,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 17:39:08,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:08,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:39:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:08,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:08,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:08,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:39:08,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:08,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:39:08,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:08,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:08,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:08,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:08,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:08,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:39:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:08,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:08,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:08,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 17:39:08,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:08,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 17:39:08,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:08,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:39:08,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:08,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 17:39:08,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:09,019 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:39:09,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129568804] [2020-10-27 17:39:09,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:39:09,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:39:09,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196445761] [2020-10-27 17:39:09,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:39:09,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:39:09,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:39:09,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:39:09,023 INFO L87 Difference]: Start difference. First operand 6227 states and 8655 transitions. Second operand 5 states. [2020-10-27 17:39:23,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:39:23,572 INFO L93 Difference]: Finished difference Result 15558 states and 22528 transitions. [2020-10-27 17:39:23,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:39:23,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-27 17:39:23,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:39:23,631 INFO L225 Difference]: With dead ends: 15558 [2020-10-27 17:39:23,631 INFO L226 Difference]: Without dead ends: 9337 [2020-10-27 17:39:23,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:39:23,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9337 states. [2020-10-27 17:39:23,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9337 to 9333. [2020-10-27 17:39:23,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9333 states. [2020-10-27 17:39:23,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9333 states to 9333 states and 12716 transitions. [2020-10-27 17:39:23,939 INFO L78 Accepts]: Start accepts. Automaton has 9333 states and 12716 transitions. Word has length 107 [2020-10-27 17:39:23,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:39:23,941 INFO L481 AbstractCegarLoop]: Abstraction has 9333 states and 12716 transitions. [2020-10-27 17:39:23,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:39:23,941 INFO L276 IsEmpty]: Start isEmpty. Operand 9333 states and 12716 transitions. [2020-10-27 17:39:23,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 17:39:23,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:39:23,943 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:39:23,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:39:23,943 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:39:23,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:39:23,944 INFO L82 PathProgramCache]: Analyzing trace with hash -615532594, now seen corresponding path program 1 times [2020-10-27 17:39:23,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:39:23,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502816519] [2020-10-27 17:39:23,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:39:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:24,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:24,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:24,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:24,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 17:39:24,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:39:24,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 774 [2020-10-27 17:39:24,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:24,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:24,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 17:39:24,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 17:39:24,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:24,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:39:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:24,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:24,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:24,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:39:24,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:24,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 17:39:24,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:24,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:24,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:39:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:24,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:25,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:25,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 17:39:25,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:25,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 17:39:25,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:25,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:39:25,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:25,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 17:39:25,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:25,105 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:39:25,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502816519] [2020-10-27 17:39:25,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:39:25,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:39:25,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918500251] [2020-10-27 17:39:25,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:39:25,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:39:25,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:39:25,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:39:25,109 INFO L87 Difference]: Start difference. First operand 9333 states and 12716 transitions. Second operand 5 states. [2020-10-27 17:39:40,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:39:40,361 INFO L93 Difference]: Finished difference Result 27979 states and 39099 transitions. [2020-10-27 17:39:40,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:39:40,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-27 17:39:40,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:39:40,444 INFO L225 Difference]: With dead ends: 27979 [2020-10-27 17:39:40,444 INFO L226 Difference]: Without dead ends: 18652 [2020-10-27 17:39:40,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:39:40,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18652 states. [2020-10-27 17:39:41,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18652 to 18648. [2020-10-27 17:39:41,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18648 states. [2020-10-27 17:39:41,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18648 states to 18648 states and 25174 transitions. [2020-10-27 17:39:41,092 INFO L78 Accepts]: Start accepts. Automaton has 18648 states and 25174 transitions. Word has length 111 [2020-10-27 17:39:41,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:39:41,092 INFO L481 AbstractCegarLoop]: Abstraction has 18648 states and 25174 transitions. [2020-10-27 17:39:41,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:39:41,093 INFO L276 IsEmpty]: Start isEmpty. Operand 18648 states and 25174 transitions. [2020-10-27 17:39:41,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 17:39:41,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:39:41,095 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:39:41,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 17:39:41,096 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:39:41,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:39:41,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1678544362, now seen corresponding path program 1 times [2020-10-27 17:39:41,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:39:41,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791078999] [2020-10-27 17:39:41,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:39:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:41,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:41,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:42,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:42,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 17:39:42,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:39:42,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 977 [2020-10-27 17:39:42,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:42,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:42,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-27 17:39:42,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 17:39:42,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:42,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:39:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:42,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:42,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:42,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:39:42,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:42,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 17:39:42,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:42,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:42,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:42,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:42,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:42,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:39:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:42,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:42,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:42,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 17:39:42,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:42,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-27 17:39:42,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:42,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:39:42,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:42,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 17:39:42,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:42,600 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:39:42,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791078999] [2020-10-27 17:39:42,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:39:42,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:39:42,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282280516] [2020-10-27 17:39:42,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:39:42,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:39:42,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:39:42,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:39:42,603 INFO L87 Difference]: Start difference. First operand 18648 states and 25174 transitions. Second operand 5 states. [2020-10-27 17:40:00,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:40:00,786 INFO L93 Difference]: Finished difference Result 54334 states and 75098 transitions. [2020-10-27 17:40:00,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:40:00,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-27 17:40:00,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:40:00,921 INFO L225 Difference]: With dead ends: 54334 [2020-10-27 17:40:00,921 INFO L226 Difference]: Without dead ends: 35692 [2020-10-27 17:40:00,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:40:01,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35692 states. [2020-10-27 17:40:01,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35692 to 35688. [2020-10-27 17:40:01,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35688 states. [2020-10-27 17:40:01,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35688 states to 35688 states and 45747 transitions. [2020-10-27 17:40:01,860 INFO L78 Accepts]: Start accepts. Automaton has 35688 states and 45747 transitions. Word has length 139 [2020-10-27 17:40:01,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:40:01,861 INFO L481 AbstractCegarLoop]: Abstraction has 35688 states and 45747 transitions. [2020-10-27 17:40:01,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:40:01,861 INFO L276 IsEmpty]: Start isEmpty. Operand 35688 states and 45747 transitions. [2020-10-27 17:40:02,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-27 17:40:02,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:40:02,086 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:40:02,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 17:40:02,086 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:40:02,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:40:02,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1763891424, now seen corresponding path program 1 times [2020-10-27 17:40:02,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:40:02,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014550705] [2020-10-27 17:40:02,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:40:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:02,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:02,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:02,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:03,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:04,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:07,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:07,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 17:40:07,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:40:07,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 17:40:07,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:07,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:40:07,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 188 [2020-10-27 17:40:07,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 17:40:07,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:07,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:40:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:07,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:07,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:07,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:40:07,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:07,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:40:07,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:07,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:07,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:40:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:07,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:07,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:07,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 17:40:07,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:07,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 17:40:07,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:07,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:07,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:07,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:07,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:07,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 17:40:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:07,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:07,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:07,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 17:40:07,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:07,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 17:40:07,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:07,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:40:07,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:07,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 17:40:07,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:07,648 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-27 17:40:07,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014550705] [2020-10-27 17:40:07,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:40:07,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:40:07,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284072951] [2020-10-27 17:40:07,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:40:07,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:40:07,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:40:07,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:40:07,652 INFO L87 Difference]: Start difference. First operand 35688 states and 45747 transitions. Second operand 5 states. [2020-10-27 17:40:27,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:40:27,208 INFO L93 Difference]: Finished difference Result 88432 states and 116462 transitions. [2020-10-27 17:40:27,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:40:27,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2020-10-27 17:40:27,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:40:27,424 INFO L225 Difference]: With dead ends: 88432 [2020-10-27 17:40:27,424 INFO L226 Difference]: Without dead ends: 52750 [2020-10-27 17:40:27,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:40:27,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52750 states. [2020-10-27 17:40:28,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52750 to 51208. [2020-10-27 17:40:28,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51208 states. [2020-10-27 17:40:29,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51208 states to 51208 states and 66914 transitions. [2020-10-27 17:40:29,164 INFO L78 Accepts]: Start accepts. Automaton has 51208 states and 66914 transitions. Word has length 202 [2020-10-27 17:40:29,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:40:29,165 INFO L481 AbstractCegarLoop]: Abstraction has 51208 states and 66914 transitions. [2020-10-27 17:40:29,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:40:29,166 INFO L276 IsEmpty]: Start isEmpty. Operand 51208 states and 66914 transitions. [2020-10-27 17:40:29,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-27 17:40:29,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:40:29,180 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:40:29,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 17:40:29,181 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:40:29,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:40:29,181 INFO L82 PathProgramCache]: Analyzing trace with hash 120063048, now seen corresponding path program 1 times [2020-10-27 17:40:29,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:40:29,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078845110] [2020-10-27 17:40:29,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:40:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:29,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:29,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:30,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:30,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:31,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:34,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:34,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-27 17:40:34,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:40:34,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-27 17:40:34,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:34,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:40:34,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 244 [2020-10-27 17:40:34,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 17:40:34,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:34,473 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 17:40:34,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:40:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:34,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:34,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:34,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:40:34,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:34,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 17:40:34,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:34,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:34,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:34,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:34,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:34,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:40:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:34,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:34,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:34,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 17:40:34,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:34,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 17:40:34,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:34,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:34,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:34,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:34,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:34,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 17:40:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:34,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:34,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:34,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 17:40:34,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:34,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-27 17:40:34,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:34,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:40:34,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:34,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-27 17:40:34,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:34,896 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-27 17:40:34,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078845110] [2020-10-27 17:40:34,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:40:34,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:40:34,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094640870] [2020-10-27 17:40:34,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:40:34,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:40:34,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:40:34,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:40:34,899 INFO L87 Difference]: Start difference. First operand 51208 states and 66914 transitions. Second operand 5 states. [2020-10-27 17:40:55,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:40:55,728 INFO L93 Difference]: Finished difference Result 124837 states and 168415 transitions. [2020-10-27 17:40:55,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:40:55,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 258 [2020-10-27 17:40:55,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:40:56,039 INFO L225 Difference]: With dead ends: 124837 [2020-10-27 17:40:56,040 INFO L226 Difference]: Without dead ends: 73635 [2020-10-27 17:40:56,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:40:56,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73635 states. [2020-10-27 17:40:57,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73635 to 72095. [2020-10-27 17:40:57,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72095 states. [2020-10-27 17:40:58,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72095 states to 72095 states and 92726 transitions. [2020-10-27 17:40:58,203 INFO L78 Accepts]: Start accepts. Automaton has 72095 states and 92726 transitions. Word has length 258 [2020-10-27 17:40:58,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:40:58,204 INFO L481 AbstractCegarLoop]: Abstraction has 72095 states and 92726 transitions. [2020-10-27 17:40:58,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:40:58,204 INFO L276 IsEmpty]: Start isEmpty. Operand 72095 states and 92726 transitions. [2020-10-27 17:40:58,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2020-10-27 17:40:58,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:40:58,478 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:40:58,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 17:40:58,479 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:40:58,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:40:58,480 INFO L82 PathProgramCache]: Analyzing trace with hash -498004758, now seen corresponding path program 1 times [2020-10-27 17:40:58,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:40:58,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939632294] [2020-10-27 17:40:58,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:40:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:58,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:59,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:00,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:03,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:03,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 604 [2020-10-27 17:41:03,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:41:03,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-27 17:41:03,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:03,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:41:03,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 573 [2020-10-27 17:41:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 17:41:03,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:03,932 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 17:41:03,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:41:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:03,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:03,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:03,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:41:03,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:03,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:41:03,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:03,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:41:03,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:03,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:41:03,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:03,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:41:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:03,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:04,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:04,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 17:41:04,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:04,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 17:41:04,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:41:04,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:04,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:41:04,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:41:04,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 17:41:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:04,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:05,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:05,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-27 17:41:05,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:05,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 908 [2020-10-27 17:41:05,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:05,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:41:05,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:05,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 471 [2020-10-27 17:41:05,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:05,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:41:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:05,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:05,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:05,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 17:41:05,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:05,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-27 17:41:05,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:05,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:41:05,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:05,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-27 17:41:05,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:06,132 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-27 17:41:06,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939632294] [2020-10-27 17:41:06,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:41:06,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:41:06,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534236835] [2020-10-27 17:41:06,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:41:06,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:41:06,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:41:06,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:41:06,136 INFO L87 Difference]: Start difference. First operand 72095 states and 92726 transitions. Second operand 5 states. [2020-10-27 17:41:31,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:41:31,885 INFO L93 Difference]: Finished difference Result 181336 states and 241888 transitions. [2020-10-27 17:41:31,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:41:31,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 588 [2020-10-27 17:41:31,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:41:32,501 INFO L225 Difference]: With dead ends: 181336 [2020-10-27 17:41:32,501 INFO L226 Difference]: Without dead ends: 109247 [2020-10-27 17:41:32,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:41:32,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109247 states. [2020-10-27 17:41:35,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109247 to 106940. [2020-10-27 17:41:35,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106940 states. [2020-10-27 17:41:35,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106940 states to 106940 states and 139123 transitions. [2020-10-27 17:41:35,476 INFO L78 Accepts]: Start accepts. Automaton has 106940 states and 139123 transitions. Word has length 588 [2020-10-27 17:41:35,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:41:35,478 INFO L481 AbstractCegarLoop]: Abstraction has 106940 states and 139123 transitions. [2020-10-27 17:41:35,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:41:35,478 INFO L276 IsEmpty]: Start isEmpty. Operand 106940 states and 139123 transitions. [2020-10-27 17:41:35,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2020-10-27 17:41:35,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:41:35,812 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:41:35,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 17:41:35,812 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:41:35,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:41:35,813 INFO L82 PathProgramCache]: Analyzing trace with hash -2097195196, now seen corresponding path program 1 times [2020-10-27 17:41:35,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:41:35,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094328082] [2020-10-27 17:41:35,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:41:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:35,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:36,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:38,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:40,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:40,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 670 [2020-10-27 17:41:40,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:41:40,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-27 17:41:40,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:40,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 17:41:40,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 17:41:40,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 542 [2020-10-27 17:41:41,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:41,313 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 17:41:41,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:41:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:41,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:41,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:41,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:41:41,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:41,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 17:41:41,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:41,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:41:41,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:41,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:41:41,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:41,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:41:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:41,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:41,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:41,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 17:41:41,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:41,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 17:41:41,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:41,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:41:41,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:41,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 17:41:41,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:41,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 17:41:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:41,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:42,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:45,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:45,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 546 [2020-10-27 17:41:45,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:41:45,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4020 [2020-10-27 17:41:45,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:45,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 17:41:45,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:41:45,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 546 [2020-10-27 17:41:45,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:46,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:41:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:46,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:46,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:48,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:48,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-27 17:41:48,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:41:48,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2370 [2020-10-27 17:41:48,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 17:41:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:41:48,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-27 17:41:48,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:41:48,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 17:41:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:41:48,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:41:48,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:41:48,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 17:41:48,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:41:48,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 17:41:48,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:41:48,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:41:48,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:41:48,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 17:41:48,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0