/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:18:12,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:18:12,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:18:12,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:18:12,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:18:12,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:18:12,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:18:12,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:18:12,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:18:12,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:18:12,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:18:12,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:18:12,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:18:12,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:18:12,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:18:12,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:18:12,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:18:12,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:18:12,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:18:12,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:18:12,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:18:12,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:18:12,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:18:12,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:18:12,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:18:12,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:18:12,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:18:12,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:18:12,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:18:12,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:18:12,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:18:12,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:18:12,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:18:12,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:18:12,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:18:12,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:18:12,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:18:12,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:18:12,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:18:12,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:18:12,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:18:12,167 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 05:18:12,196 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:18:12,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:18:12,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:18:12,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:18:12,199 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:18:12,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:18:12,199 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:18:12,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:18:12,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:18:12,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:18:12,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:18:12,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:18:12,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:18:12,201 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:18:12,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:18:12,201 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:18:12,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:18:12,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:18:12,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:18:12,202 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:18:12,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:18:12,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:18:12,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:18:12,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:18:12,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:18:12,203 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:18:12,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:18:12,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:18:12,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:18:12,204 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:18:12,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:18:12,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:18:12,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:18:12,604 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:18:12,608 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:18:12,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label01.c [2020-10-29 05:18:12,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/559afcaee/8899f6e80f3a44f9a7e0bb5ddfe92ea0/FLAGe15a57090 [2020-10-29 05:18:14,108 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:18:14,109 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label01.c [2020-10-29 05:18:14,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/559afcaee/8899f6e80f3a44f9a7e0bb5ddfe92ea0/FLAGe15a57090 [2020-10-29 05:18:14,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/559afcaee/8899f6e80f3a44f9a7e0bb5ddfe92ea0 [2020-10-29 05:18:14,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:18:14,213 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:18:14,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:18:14,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:18:14,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:18:14,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:18:14" (1/1) ... [2020-10-29 05:18:14,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51fd59e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:14, skipping insertion in model container [2020-10-29 05:18:14,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:18:14" (1/1) ... [2020-10-29 05:18:14,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:18:14,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:18:16,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:18:16,820 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:18:17,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:18:18,075 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:18:18,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:18 WrapperNode [2020-10-29 05:18:18,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:18:18,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:18:18,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:18:18,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:18:18,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:18" (1/1) ... [2020-10-29 05:18:18,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:18" (1/1) ... [2020-10-29 05:18:18,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:18" (1/1) ... [2020-10-29 05:18:18,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:18" (1/1) ... [2020-10-29 05:18:18,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:18" (1/1) ... [2020-10-29 05:18:18,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:18" (1/1) ... [2020-10-29 05:18:18,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:18" (1/1) ... [2020-10-29 05:18:18,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:18:18,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:18:18,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:18:18,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:18:18,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:18:18,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:18:18,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:18:18,909 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:18:18,909 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:18:18,909 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:18:18,910 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:18:18,910 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:18:18,910 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:18:18,910 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 05:18:18,910 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-29 05:18:18,911 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-29 05:18:18,911 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:18:18,911 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:18:18,912 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:18:18,912 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:18:18,913 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:18:18,913 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:18:18,913 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 05:18:18,913 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-29 05:18:18,913 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-29 05:18:18,914 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:18:18,914 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:18:18,914 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:18:18,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:18:18,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:18:18,914 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:18:18,914 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:18:18,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:18:18,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:18:18,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:18:18,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:18:18,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:18:18,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:18:29,395 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:18:29,395 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:18:29,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:18:29 BoogieIcfgContainer [2020-10-29 05:18:29,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:18:29,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:18:29,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:18:29,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:18:29,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:18:14" (1/3) ... [2020-10-29 05:18:29,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a05f8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:18:29, skipping insertion in model container [2020-10-29 05:18:29,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:18" (2/3) ... [2020-10-29 05:18:29,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a05f8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:18:29, skipping insertion in model container [2020-10-29 05:18:29,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:18:29" (3/3) ... [2020-10-29 05:18:29,413 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label01.c [2020-10-29 05:18:29,426 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:18:29,433 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:18:29,448 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:18:29,497 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:18:29,497 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:18:29,497 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:18:29,497 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:18:29,497 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:18:29,497 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:18:29,498 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:18:29,498 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:18:29,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-29 05:18:29,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1666 [2020-10-29 05:18:29,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:18:29,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:18:29,701 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:18:29,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:18:29,709 INFO L82 PathProgramCache]: Analyzing trace with hash 2019755065, now seen corresponding path program 1 times [2020-10-29 05:18:29,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:18:29,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412278648] [2020-10-29 05:18:29,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:18:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:31,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:35,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:35,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1689 [2020-10-29 05:18:35,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:35,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-29 05:18:35,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:35,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:35,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:18:35,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:18:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1680 [2020-10-29 05:18:35,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:18:37,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:18:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:37,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:38,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:38,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:18:38,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:38,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 05:18:38,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:38,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:38,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:18:38,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:38,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:18:38,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:18:40,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:18:40,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412278648] [2020-10-29 05:18:40,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:18:40,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:18:40,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766503542] [2020-10-29 05:18:40,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:18:40,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:18:40,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:18:40,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:18:40,934 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-29 05:19:04,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:19:04,641 INFO L93 Difference]: Finished difference Result 6316 states and 11857 transitions. [2020-10-29 05:19:04,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:19:04,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1665 [2020-10-29 05:19:04,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:19:04,712 INFO L225 Difference]: With dead ends: 6316 [2020-10-29 05:19:04,712 INFO L226 Difference]: Without dead ends: 4026 [2020-10-29 05:19:04,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:19:04,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2020-10-29 05:19:04,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 3997. [2020-10-29 05:19:04,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3997 states. [2020-10-29 05:19:05,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6428 transitions. [2020-10-29 05:19:05,004 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 6428 transitions. Word has length 1665 [2020-10-29 05:19:05,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:19:05,013 INFO L481 AbstractCegarLoop]: Abstraction has 3997 states and 6428 transitions. [2020-10-29 05:19:05,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:19:05,014 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 6428 transitions. [2020-10-29 05:19:05,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1675 [2020-10-29 05:19:05,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:19:05,226 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:19:05,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:19:05,228 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:19:05,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:19:05,230 INFO L82 PathProgramCache]: Analyzing trace with hash 2051214781, now seen corresponding path program 1 times [2020-10-29 05:19:05,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:19:05,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955664947] [2020-10-29 05:19:05,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:19:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:05,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:09,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:09,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1700 [2020-10-29 05:19:09,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:19:09,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3676 [2020-10-29 05:19:09,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:09,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:09,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:19:09,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:19:09,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 05:19:09,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:19:10,448 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 05:19:10,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:19:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:10,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:10,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:10,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:19:10,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:19:10,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:19:10,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:10,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:10,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:19:10,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:19:10,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:19:10,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:19:10,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:19:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:10,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:10,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:10,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:19:10,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:19:10,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 05:19:10,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:10,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:10,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:19:10,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:19:10,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:19:10,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:19:11,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:19:11,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955664947] [2020-10-29 05:19:11,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:19:11,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 05:19:11,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450531162] [2020-10-29 05:19:12,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:19:12,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:19:12,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:19:12,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:19:12,003 INFO L87 Difference]: Start difference. First operand 3997 states and 6428 transitions. Second operand 7 states. [2020-10-29 05:19:43,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:19:43,566 INFO L93 Difference]: Finished difference Result 11925 states and 19334 transitions. [2020-10-29 05:19:43,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:19:43,567 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1674 [2020-10-29 05:19:43,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:19:43,611 INFO L225 Difference]: With dead ends: 11925 [2020-10-29 05:19:43,611 INFO L226 Difference]: Without dead ends: 7934 [2020-10-29 05:19:43,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:19:43,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7934 states. [2020-10-29 05:19:43,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7934 to 7713. [2020-10-29 05:19:43,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7713 states. [2020-10-29 05:19:43,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7713 states to 7713 states and 11560 transitions. [2020-10-29 05:19:43,861 INFO L78 Accepts]: Start accepts. Automaton has 7713 states and 11560 transitions. Word has length 1674 [2020-10-29 05:19:43,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:19:43,862 INFO L481 AbstractCegarLoop]: Abstraction has 7713 states and 11560 transitions. [2020-10-29 05:19:43,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:19:43,862 INFO L276 IsEmpty]: Start isEmpty. Operand 7713 states and 11560 transitions. [2020-10-29 05:19:43,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1689 [2020-10-29 05:19:43,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:19:43,994 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:19:43,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:19:43,994 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:19:43,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:19:43,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1643765179, now seen corresponding path program 1 times [2020-10-29 05:19:43,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:19:43,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090486919] [2020-10-29 05:19:43,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:19:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:44,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:44,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:45,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:49,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:49,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1716 [2020-10-29 05:19:49,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:19:49,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-29 05:19:49,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:49,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:49,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 05:19:49,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 05:19:49,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1273 [2020-10-29 05:19:49,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:19:52,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:19:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:52,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:52,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:52,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:19:52,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:19:52,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:19:52,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:52,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:52,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:19:52,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:19:52,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:19:52,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:19:52,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:19:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:52,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:52,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:52,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:19:52,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:19:52,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:19:52,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:52,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:52,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:19:52,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:19:52,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:19:52,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:19:52,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 05:19:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:52,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:52,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:52,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:19:52,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:19:52,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:19:52,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:52,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:52,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:19:52,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:19:52,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 05:19:52,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:20:09,406 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 05:20:09,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090486919] [2020-10-29 05:20:09,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:20:09,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 05:20:09,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906956405] [2020-10-29 05:20:09,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 05:20:09,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:20:09,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 05:20:09,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-10-29 05:20:09,412 INFO L87 Difference]: Start difference. First operand 7713 states and 11560 transitions. Second operand 23 states. [2020-10-29 05:20:09,869 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 05:20:10,097 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-29 05:20:13,037 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-29 05:20:15,469 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 05:20:17,351 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 05:20:17,559 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-29 05:20:18,476 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-29 05:20:21,160 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-29 05:20:24,673 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:20:24,867 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:20:31,235 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:20:31,442 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:20:37,955 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:20:38,144 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:20:44,695 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:20:44,923 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:20:47,950 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:20:53,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:20:53,965 INFO L93 Difference]: Finished difference Result 16747 states and 25792 transitions. [2020-10-29 05:20:53,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 05:20:53,966 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1688 [2020-10-29 05:20:53,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:20:54,013 INFO L225 Difference]: With dead ends: 16747 [2020-10-29 05:20:54,014 INFO L226 Difference]: Without dead ends: 9040 [2020-10-29 05:20:54,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=207, Invalid=1353, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 05:20:54,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9040 states. [2020-10-29 05:20:54,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9040 to 9006. [2020-10-29 05:20:54,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9006 states. [2020-10-29 05:20:54,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9006 states to 9006 states and 12884 transitions. [2020-10-29 05:20:54,302 INFO L78 Accepts]: Start accepts. Automaton has 9006 states and 12884 transitions. Word has length 1688 [2020-10-29 05:20:54,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:20:54,305 INFO L481 AbstractCegarLoop]: Abstraction has 9006 states and 12884 transitions. [2020-10-29 05:20:54,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 05:20:54,305 INFO L276 IsEmpty]: Start isEmpty. Operand 9006 states and 12884 transitions. [2020-10-29 05:20:54,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1703 [2020-10-29 05:20:54,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:20:54,359 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:20:54,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:20:54,360 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:20:54,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:20:54,361 INFO L82 PathProgramCache]: Analyzing trace with hash 158671270, now seen corresponding path program 1 times [2020-10-29 05:20:54,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:20:54,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726343612] [2020-10-29 05:20:54,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:20:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:20:54,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:54,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:55,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:59,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:20:59,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1730 [2020-10-29 05:20:59,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:20:59,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5147 [2020-10-29 05:20:59,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:20:59,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:20:59,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 05:20:59,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 05:20:59,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1279 [2020-10-29 05:20:59,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:21:03,434 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-10-29 05:21:03,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:21:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:21:03,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:03,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:21:03,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:21:03,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:21:03,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:21:03,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:21:03,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:21:03,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:21:03,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:21:03,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:21:03,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:21:03,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:21:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:21:03,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:03,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:21:03,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:21:03,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:21:03,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:21:03,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:21:03,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:21:03,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:21:03,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:21:03,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:21:03,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:21:03,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 05:21:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:21:03,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:03,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:21:03,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 05:21:03,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:21:03,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 05:21:03,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:21:03,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:21:03,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 05:21:03,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:21:03,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 05:21:03,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:21:23,245 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 05:21:23,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726343612] [2020-10-29 05:21:23,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:21:23,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 05:21:23,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060155776] [2020-10-29 05:21:23,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 05:21:23,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:21:23,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 05:21:23,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2020-10-29 05:21:23,249 INFO L87 Difference]: Start difference. First operand 9006 states and 12884 transitions. Second operand 24 states. [2020-10-29 05:21:24,476 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-29 05:21:24,726 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-29 05:21:32,963 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 05:21:34,609 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-29 05:21:37,678 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-29 05:21:37,897 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-29 05:21:50,940 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-29 05:21:51,194 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 102