/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_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:26:50,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:26:50,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:26:50,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:26:50,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:26:50,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:26:50,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:26:50,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:26:50,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:26:50,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:26:50,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:26:50,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:26:50,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:26:50,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:26:50,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:26:50,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:26:50,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:26:50,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:26:50,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:26:50,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:26:50,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:26:50,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:26:50,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:26:50,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:26:50,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:26:50,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:26:50,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:26:50,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:26:50,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:26:50,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:26:50,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:26:50,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:26:50,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:26:50,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:26:50,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:26:50,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:26:50,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:26:50,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:26:50,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:26:50,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:26:50,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:26:50,233 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 05:26:50,284 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:26:50,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:26:50,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:26:50,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:26:50,289 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:26:50,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:26:50,290 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:26:50,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:26:50,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:26:50,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:26:50,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:26:50,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:26:50,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:26:50,293 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:26:50,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:26:50,293 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:26:50,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:26:50,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:26:50,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:26:50,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:26:50,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:26:50,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:26:50,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:26:50,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:26:50,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:26:50,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:26:50,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:26:50,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:26:50,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:26:50,297 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:26:50,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:26:50,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:26:50,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:26:50,797 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:26:50,797 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:26:50,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label34.c [2020-10-29 05:26:50,880 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c53a5d6ca/dbeccafb2dc14ae88bc1a62f552eaa96/FLAGebed297cb [2020-10-29 05:26:52,041 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:26:52,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label34.c [2020-10-29 05:26:52,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c53a5d6ca/dbeccafb2dc14ae88bc1a62f552eaa96/FLAGebed297cb [2020-10-29 05:26:52,368 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c53a5d6ca/dbeccafb2dc14ae88bc1a62f552eaa96 [2020-10-29 05:26:52,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:26:52,379 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:26:52,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:26:52,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:26:52,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:26:52,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:26:52" (1/1) ... [2020-10-29 05:26:52,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc51e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:52, skipping insertion in model container [2020-10-29 05:26:52,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:26:52" (1/1) ... [2020-10-29 05:26:52,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:26:52,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:26:55,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:26:55,023 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:26:56,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:26:56,380 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:26:56,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:56 WrapperNode [2020-10-29 05:26:56,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:26:56,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:26:56,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:26:56,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:26:56,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:56" (1/1) ... [2020-10-29 05:26:56,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:56" (1/1) ... [2020-10-29 05:26:56,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:56" (1/1) ... [2020-10-29 05:26:56,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:56" (1/1) ... [2020-10-29 05:26:56,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:56" (1/1) ... [2020-10-29 05:26:56,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:56" (1/1) ... [2020-10-29 05:26:56,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:56" (1/1) ... [2020-10-29 05:26:57,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:26:57,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:26:57,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:26:57,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:26:57,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:56" (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 05:26:57,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:26:57,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:26:57,173 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:26:57,174 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:26:57,174 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:26:57,174 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:26:57,174 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:26:57,174 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:26:57,175 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 05:26:57,175 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-29 05:26:57,176 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-29 05:26:57,176 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:26:57,176 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:26:57,176 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:26:57,176 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:26:57,177 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:26:57,178 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:26:57,178 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 05:26:57,178 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-29 05:26:57,179 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-29 05:26:57,179 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:26:57,179 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:26:57,179 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:26:57,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:26:57,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:26:57,180 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:26:57,180 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:26:57,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:26:57,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:26:57,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:26:57,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:26:57,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:26:57,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:27:07,058 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:27:07,058 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:27:07,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:27:07 BoogieIcfgContainer [2020-10-29 05:27:07,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:27:07,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:27:07,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:27:07,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:27:07,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:26:52" (1/3) ... [2020-10-29 05:27:07,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213c48ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:27:07, skipping insertion in model container [2020-10-29 05:27:07,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:26:56" (2/3) ... [2020-10-29 05:27:07,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213c48ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:27:07, skipping insertion in model container [2020-10-29 05:27:07,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:27:07" (3/3) ... [2020-10-29 05:27:07,078 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label34.c [2020-10-29 05:27:07,091 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:27:07,099 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:27:07,115 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:27:07,168 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:27:07,168 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:27:07,168 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:27:07,168 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:27:07,168 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:27:07,169 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:27:07,169 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:27:07,169 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:27:07,234 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-29 05:27:07,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1705 [2020-10-29 05:27:07,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:27:07,403 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:27:07,403 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:27:07,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:27:07,414 INFO L82 PathProgramCache]: Analyzing trace with hash 2016469159, now seen corresponding path program 1 times [2020-10-29 05:27:07,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:27:07,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517195288] [2020-10-29 05:27:07,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:27:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:27:09,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:27:13,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:27:13,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1728 [2020-10-29 05:27:13,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:27:13,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 05:27:13,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:27:13,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:27:13,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:27:13,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:27:13,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1719 [2020-10-29 05:27:13,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:27:15,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:27:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:27:15,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:27:15,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:27:15,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:27:15,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:27:15,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-29 05:27:15,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:27:15,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:27:15,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:27:15,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:27:15,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:27:15,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:27:19,235 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 05:27:19,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517195288] [2020-10-29 05:27:19,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:27:19,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 05:27:19,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331138262] [2020-10-29 05:27:19,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:27:19,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:27:19,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:27:19,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:27:19,267 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 5 states. [2020-10-29 05:27:41,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:27:41,022 INFO L93 Difference]: Finished difference Result 6365 states and 11965 transitions. [2020-10-29 05:27:41,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:27:41,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1704 [2020-10-29 05:27:41,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:27:41,078 INFO L225 Difference]: With dead ends: 6365 [2020-10-29 05:27:41,079 INFO L226 Difference]: Without dead ends: 4075 [2020-10-29 05:27:41,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:27:41,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2020-10-29 05:27:41,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 3987. [2020-10-29 05:27:41,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3987 states. [2020-10-29 05:27:41,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3987 states to 3987 states and 7373 transitions. [2020-10-29 05:27:41,364 INFO L78 Accepts]: Start accepts. Automaton has 3987 states and 7373 transitions. Word has length 1704 [2020-10-29 05:27:41,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:27:41,370 INFO L481 AbstractCegarLoop]: Abstraction has 3987 states and 7373 transitions. [2020-10-29 05:27:41,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:27:41,371 INFO L276 IsEmpty]: Start isEmpty. Operand 3987 states and 7373 transitions. [2020-10-29 05:27:41,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1715 [2020-10-29 05:27:41,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:27:41,497 INFO L422 BasicCegarLoop]: trace histogram [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, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:27:41,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:27:41,499 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:27:41,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:27:41,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1791570599, now seen corresponding path program 1 times [2020-10-29 05:27:41,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:27:41,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15861279] [2020-10-29 05:27:41,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:27:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:27:41,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:27:44,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:27:46,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:27:46,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1740 [2020-10-29 05:27:46,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:27:46,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5152 [2020-10-29 05:27:46,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:27:46,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:27:46,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:27:46,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 05:27:46,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1716 [2020-10-29 05:27:46,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:27:48,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:27:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:27:48,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:27:48,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:27:48,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:27:48,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:27:48,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 05:27:48,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:27:48,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:27:48,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:27:48,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:27:48,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:27:48,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:27:48,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:27:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:27:48,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:27:48,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:27:48,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 05:27:48,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:27:48,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:27:48,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:27:48,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:27:48,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:27:48,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:27:48,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 05:27:48,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:27:51,479 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:27:51,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15861279] [2020-10-29 05:27:51,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:27:51,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:27:51,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230200214] [2020-10-29 05:27:51,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:27:51,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:27:51,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:27:51,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:27:51,491 INFO L87 Difference]: Start difference. First operand 3987 states and 7373 transitions. Second operand 5 states. [2020-10-29 05:28:16,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:28:16,007 INFO L93 Difference]: Finished difference Result 11577 states and 21655 transitions. [2020-10-29 05:28:16,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:28:16,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1714 [2020-10-29 05:28:16,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:28:16,053 INFO L225 Difference]: With dead ends: 11577 [2020-10-29 05:28:16,053 INFO L226 Difference]: Without dead ends: 7596 [2020-10-29 05:28:16,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:28:16,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7596 states. [2020-10-29 05:28:16,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7596 to 7586. [2020-10-29 05:28:16,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7586 states. [2020-10-29 05:28:16,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7586 states to 7586 states and 12131 transitions. [2020-10-29 05:28:16,386 INFO L78 Accepts]: Start accepts. Automaton has 7586 states and 12131 transitions. Word has length 1714 [2020-10-29 05:28:16,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:28:16,389 INFO L481 AbstractCegarLoop]: Abstraction has 7586 states and 12131 transitions. [2020-10-29 05:28:16,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:28:16,390 INFO L276 IsEmpty]: Start isEmpty. Operand 7586 states and 12131 transitions. [2020-10-29 05:28:16,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1720 [2020-10-29 05:28:16,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:28:16,444 INFO L422 BasicCegarLoop]: trace histogram [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, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:28:16,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:28:16,445 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:28:16,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:28:16,447 INFO L82 PathProgramCache]: Analyzing trace with hash 908575952, now seen corresponding path program 1 times [2020-10-29 05:28:16,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:28:16,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675537827] [2020-10-29 05:28:16,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:28:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:28:16,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:28:16,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:28:21,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:28:21,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1745 [2020-10-29 05:28:21,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:28:21,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5164 [2020-10-29 05:28:21,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:28:21,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:28:21,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 05:28:21,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:28:21,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1294 [2020-10-29 05:28:21,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:28:27,113 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-10-29 05:28:27,264 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-10-29 05:28:27,403 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-10-29 05:28:27,540 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 37 [2020-10-29 05:28:28,592 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 42 [2020-10-29 05:28:28,797 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 42 [2020-10-29 05:28:29,017 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 38 [2020-10-29 05:28:29,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:28:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:28:29,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:28:29,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:28:29,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:28:29,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:28:29,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:28:29,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:28:29,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:28:29,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:28:29,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:28:29,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:28:29,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:28:29,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:28:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:28:29,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:28:29,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:28:29,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:28:29,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:28:29,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 05:28:29,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:28:29,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:28:29,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:28:29,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:28:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:28:29,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:28:52,275 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:28:52,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675537827] [2020-10-29 05:28:52,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:28:52,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 05:28:52,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676414459] [2020-10-29 05:28:52,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 05:28:52,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:28:52,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 05:28:52,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2020-10-29 05:28:52,283 INFO L87 Difference]: Start difference. First operand 7586 states and 12131 transitions. Second operand 23 states. [2020-10-29 05:28:52,714 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 05:28:52,923 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 05:28:53,853 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 05:28:59,414 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-29 05:28:59,620 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-29 05:29:05,747 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-29 05:29:05,942 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-29 05:29:09,190 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-29 05:29:09,639 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-29 05:29:12,414 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-29 05:29:12,602 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 05:29:18,817 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-29 05:29:19,005 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-29 05:29:20,715 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 102 [2020-10-29 05:29:22,349 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 100 [2020-10-29 05:29:25,795 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:29:26,875 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:29:34,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:29:34,423 INFO L93 Difference]: Finished difference Result 16459 states and 26889 transitions. [2020-10-29 05:29:34,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 05:29:34,424 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1719 [2020-10-29 05:29:34,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:29:34,483 INFO L225 Difference]: With dead ends: 16459 [2020-10-29 05:29:34,483 INFO L226 Difference]: Without dead ends: 8879 [2020-10-29 05:29:34,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=212, Invalid=1428, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 05:29:34,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8879 states. [2020-10-29 05:29:34,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8879 to 8872. [2020-10-29 05:29:34,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8872 states. [2020-10-29 05:29:34,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8872 states to 8872 states and 13447 transitions. [2020-10-29 05:29:34,756 INFO L78 Accepts]: Start accepts. Automaton has 8872 states and 13447 transitions. Word has length 1719 [2020-10-29 05:29:34,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:29:34,760 INFO L481 AbstractCegarLoop]: Abstraction has 8872 states and 13447 transitions. [2020-10-29 05:29:34,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 05:29:34,760 INFO L276 IsEmpty]: Start isEmpty. Operand 8872 states and 13447 transitions. [2020-10-29 05:29:34,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1731 [2020-10-29 05:29:34,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:29:34,827 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:29:34,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:29:34,827 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:29:34,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:29:34,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1693238695, now seen corresponding path program 1 times [2020-10-29 05:29:34,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:29:34,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482347423] [2020-10-29 05:29:34,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:29:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:29:35,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:29:35,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:29:40,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:29:40,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1756 [2020-10-29 05:29:40,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:29:40,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5146 [2020-10-29 05:29:40,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:29:40,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:29:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 05:29:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 05:29:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1426 [2020-10-29 05:29:40,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:29:46,875 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 39 [2020-10-29 05:29:47,098 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 39 [2020-10-29 05:29:47,305 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 37 [2020-10-29 05:29:47,543 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2020-10-29 05:29:47,768 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2020-10-29 05:29:48,054 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 39 [2020-10-29 05:29:48,320 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 42 [2020-10-29 05:29:48,508 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-29 05:29:48,705 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-29 05:29:48,859 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-10-29 05:29:49,010 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-10-29 05:29:49,189 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-10-29 05:29:49,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:29:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:29:49,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:29:49,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:29:49,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:29:49,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:29:49,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 05:29:49,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:29:49,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:29:49,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:29:49,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:29:49,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:29:49,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:29:49,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:29:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:29:49,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:29:49,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:29:49,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 05:29:49,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:29:49,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 05:29:49,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:29:49,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:29:49,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:29:49,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:29:49,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 05:29:49,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:30:17,904 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:30:17,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482347423] [2020-10-29 05:30:17,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:30:17,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 05:30:17,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069353402] [2020-10-29 05:30:17,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 05:30:17,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:30:17,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 05:30:17,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2020-10-29 05:30:17,909 INFO L87 Difference]: Start difference. First operand 8872 states and 13447 transitions. Second operand 25 states. [2020-10-29 05:30:18,462 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-29 05:30:18,673 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 05:30:25,308 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-29 05:30:25,495 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 05:30:32,122 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 05:30:32,339 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 111