/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_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:19:04,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:19:04,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:19:04,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:19:04,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:19:04,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:19:04,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:19:04,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:19:04,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:19:04,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:19:04,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:19:04,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:19:04,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:19:04,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:19:04,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:19:04,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:19:04,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:19:04,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:19:04,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:19:04,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:19:04,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:19:04,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:19:04,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:19:04,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:19:04,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:19:04,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:19:04,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:19:04,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:19:04,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:19:04,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:19:04,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:19:04,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:19:04,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:19:04,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:19:04,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:19:04,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:19:04,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:19:04,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:19:04,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:19:04,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:19:04,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:19:04,230 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 05:19:04,266 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:19:04,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:19:04,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:19:04,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:19:04,271 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:19:04,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:19:04,272 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:19:04,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:19:04,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:19:04,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:19:04,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:19:04,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:19:04,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:19:04,274 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:19:04,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:19:04,276 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:19:04,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:19:04,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:19:04,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:19:04,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:19:04,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:19:04,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:19:04,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:19:04,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:19:04,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:19:04,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:19:04,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:19:04,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:19:04,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:19:04,280 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:19:04,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:19:04,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:19:04,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:19:04,781 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:19:04,782 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:19:04,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label06.c [2020-10-29 05:19:04,870 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe491b91d/6e95e282854a4f61899fd235654642ef/FLAGb46fa72a8 [2020-10-29 05:19:06,298 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:19:06,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label06.c [2020-10-29 05:19:06,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe491b91d/6e95e282854a4f61899fd235654642ef/FLAGb46fa72a8 [2020-10-29 05:19:06,457 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe491b91d/6e95e282854a4f61899fd235654642ef [2020-10-29 05:19:06,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:19:06,469 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:19:06,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:19:06,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:19:06,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:19:06,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:19:06" (1/1) ... [2020-10-29 05:19:06,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dca651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:06, skipping insertion in model container [2020-10-29 05:19:06,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:19:06" (1/1) ... [2020-10-29 05:19:06,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:19:06,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:19:09,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:19:09,257 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:19:10,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:19:10,521 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:19:10,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:10 WrapperNode [2020-10-29 05:19:10,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:19:10,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:19:10,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:19:10,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:19:10,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:10" (1/1) ... [2020-10-29 05:19:10,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:10" (1/1) ... [2020-10-29 05:19:10,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:10" (1/1) ... [2020-10-29 05:19:10,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:10" (1/1) ... [2020-10-29 05:19:10,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:10" (1/1) ... [2020-10-29 05:19:11,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:10" (1/1) ... [2020-10-29 05:19:11,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:10" (1/1) ... [2020-10-29 05:19:11,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:19:11,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:19:11,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:19:11,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:19:11,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:10" (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 05:19:11,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:19:11,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:19:11,291 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:19:11,291 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:19:11,291 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:19:11,292 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:19:11,292 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:19:11,293 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:19:11,293 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 05:19:11,293 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-29 05:19:11,294 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-29 05:19:11,294 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:19:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:19:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:19:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:19:11,295 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:19:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:19:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 05:19:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-29 05:19:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-29 05:19:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:19:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:19:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:19:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:19:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:19:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:19:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:19:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:19:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:19:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:19:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:19:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:19:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:19:21,633 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:19:21,633 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:19:21,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:19:21 BoogieIcfgContainer [2020-10-29 05:19:21,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:19:21,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:19:21,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:19:21,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:19:21,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:19:06" (1/3) ... [2020-10-29 05:19:21,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74986756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:19:21, skipping insertion in model container [2020-10-29 05:19:21,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:10" (2/3) ... [2020-10-29 05:19:21,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74986756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:19:21, skipping insertion in model container [2020-10-29 05:19:21,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:19:21" (3/3) ... [2020-10-29 05:19:21,648 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label06.c [2020-10-29 05:19:21,661 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:19:21,667 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:19:21,682 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:19:21,723 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:19:21,724 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:19:21,724 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:19:21,724 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:19:21,724 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:19:21,724 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:19:21,724 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:19:21,725 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:19:21,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-29 05:19:21,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1692 [2020-10-29 05:19:21,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:19:21,935 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] [2020-10-29 05:19:21,935 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:19:21,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:19:21,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1924616607, now seen corresponding path program 1 times [2020-10-29 05:19:21,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:19:21,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25586092] [2020-10-29 05:19:21,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:19:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:23,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:28,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:28,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1715 [2020-10-29 05:19:28,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:19:28,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 05:19:28,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:28,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:28,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:19:28,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:19:28,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1706 [2020-10-29 05:19:28,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 05:19:29,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:19:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:19:29,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:19:29,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:19:29,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:19:29,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:19:29,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 05:19:29,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:19:29,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:19:29,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:19:29,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:19:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:19:29,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:19:33,263 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 05:19:33,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25586092] [2020-10-29 05:19:33,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:19:33,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 05:19:33,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559877284] [2020-10-29 05:19:33,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:19:33,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:19:33,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:19:33,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:19:33,295 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 5 states. [2020-10-29 05:20:08,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:20:08,721 INFO L93 Difference]: Finished difference Result 8269 states and 15670 transitions. [2020-10-29 05:20:08,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:20:08,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1691 [2020-10-29 05:20:08,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:20:08,802 INFO L225 Difference]: With dead ends: 8269 [2020-10-29 05:20:08,802 INFO L226 Difference]: Without dead ends: 5975 [2020-10-29 05:20:08,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:20:08,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5975 states. [2020-10-29 05:20:09,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5975 to 5839. [2020-10-29 05:20:09,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5839 states. [2020-10-29 05:20:09,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5839 states to 5839 states and 10172 transitions. [2020-10-29 05:20:09,134 INFO L78 Accepts]: Start accepts. Automaton has 5839 states and 10172 transitions. Word has length 1691 [2020-10-29 05:20:09,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:20:09,141 INFO L481 AbstractCegarLoop]: Abstraction has 5839 states and 10172 transitions. [2020-10-29 05:20:09,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:20:09,142 INFO L276 IsEmpty]: Start isEmpty. Operand 5839 states and 10172 transitions. [2020-10-29 05:20:09,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1704 [2020-10-29 05:20:09,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:20:09,415 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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] [2020-10-29 05:20:09,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:20:09,416 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:20:09,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:20:09,419 INFO L82 PathProgramCache]: Analyzing trace with hash 21057893, now seen corresponding path program 1 times [2020-10-29 05:20:09,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:20:09,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019354504] [2020-10-29 05:20:09,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:20:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:20:09,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:10,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:14,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:20:14,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1729 [2020-10-29 05:20:14,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:20:14,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5192 [2020-10-29 05:20:14,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:20:14,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:20:14,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 05:20:14,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 05:20:14,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1273 [2020-10-29 05:20:14,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:20:20,600 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 37 [2020-10-29 05:20:20,858 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 40 [2020-10-29 05:20:21,056 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2020-10-29 05:20:21,332 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 44 [2020-10-29 05:20:21,502 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 34 [2020-10-29 05:20:22,141 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36 [2020-10-29 05:20:22,312 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36 [2020-10-29 05:20:22,556 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 39 [2020-10-29 05:20:22,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:20:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:20:22,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:22,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:20:22,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:20:22,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:20:22,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:20:22,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:20:22,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:20:22,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:20:22,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:20:22,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:20:22,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:20:22,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:20:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:20:22,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:20:22,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:20:22,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:20:22,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:20:22,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:20:22,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:20:22,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:20:22,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:20:22,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:20:22,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 05:20:22,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:20:44,988 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:20:44,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019354504] [2020-10-29 05:20:44,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:20:44,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 05:20:44,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082222620] [2020-10-29 05:20:45,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 05:20:45,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:20:45,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 05:20:45,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-10-29 05:20:45,006 INFO L87 Difference]: Start difference. First operand 5839 states and 10172 transitions. Second operand 23 states. [2020-10-29 05:20:45,431 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 05:20:45,660 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-29 05:20:49,038 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-29 05:20:52,055 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 106 [2020-10-29 05:20:54,356 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-29 05:20:54,635 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-29 05:20:55,976 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 104 [2020-10-29 05:20:59,610 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 105 [2020-10-29 05:21:04,209 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 05:21:04,443 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-29 05:21:12,614 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 05:21:12,850 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-29 05:21:21,100 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 05:21:21,324 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-29 05:21:29,682 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-29 05:21:29,955 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-29 05:21:34,004 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 99 [2020-10-29 05:21:43,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:21:43,496 INFO L93 Difference]: Finished difference Result 12983 states and 22959 transitions. [2020-10-29 05:21:43,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 05:21:43,499 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1703 [2020-10-29 05:21:43,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:21:43,542 INFO L225 Difference]: With dead ends: 12983 [2020-10-29 05:21:43,543 INFO L226 Difference]: Without dead ends: 7150 [2020-10-29 05:21:43,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=207, Invalid=1353, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 05:21:43,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7150 states. [2020-10-29 05:21:43,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7150 to 7130. [2020-10-29 05:21:43,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7130 states. [2020-10-29 05:21:43,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7130 states to 7130 states and 11490 transitions. [2020-10-29 05:21:43,756 INFO L78 Accepts]: Start accepts. Automaton has 7130 states and 11490 transitions. Word has length 1703 [2020-10-29 05:21:43,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:21:43,758 INFO L481 AbstractCegarLoop]: Abstraction has 7130 states and 11490 transitions. [2020-10-29 05:21:43,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 05:21:43,759 INFO L276 IsEmpty]: Start isEmpty. Operand 7130 states and 11490 transitions. [2020-10-29 05:21:43,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1727 [2020-10-29 05:21:43,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:21:43,822 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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] [2020-10-29 05:21:43,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:21:43,822 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:21:43,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:21:43,823 INFO L82 PathProgramCache]: Analyzing trace with hash -647648416, now seen corresponding path program 1 times [2020-10-29 05:21:43,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:21:43,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125363271] [2020-10-29 05:21:43,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:21:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:21:44,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:44,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:44,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:46,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:49,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:21:49,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1754 [2020-10-29 05:21:49,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:21:49,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-29 05:21:49,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:21:49,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:21:49,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 05:21:49,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:21:49,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 05:21:49,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:21:49,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:21:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:21:49,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:49,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:21:49,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:21:49,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:21:49,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:21:49,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:21:49,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:21:49,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:21:49,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:21:49,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:21:49,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:21:49,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:21:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:21:49,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:49,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:49,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:21:49,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 05:21:49,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:21:49,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 05:21:49,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:21:49,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:21:49,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:21:49,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:21:49,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 05:21:49,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:21:49,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 05:21:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:21:49,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:21:49,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:21:49,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:21:49,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:21:49,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:21:49,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:21:49,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:21:49,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:21:49,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:21:49,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:21:49,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:21:51,038 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 05:21:51,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125363271] [2020-10-29 05:21:51,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:21:51,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:21:51,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938616095] [2020-10-29 05:21:51,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:21:51,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:21:51,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:21:51,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:21:51,049 INFO L87 Difference]: Start difference. First operand 7130 states and 11490 transitions. Second operand 8 states. [2020-10-29 05:22:25,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:22:25,799 INFO L93 Difference]: Finished difference Result 19911 states and 33405 transitions. [2020-10-29 05:22:25,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:22:25,800 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1726 [2020-10-29 05:22:25,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:22:25,880 INFO L225 Difference]: With dead ends: 19911 [2020-10-29 05:22:25,881 INFO L226 Difference]: Without dead ends: 12787 [2020-10-29 05:22:25,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 05:22:25,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12787 states. [2020-10-29 05:22:26,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12787 to 12612. [2020-10-29 05:22:26,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12612 states. [2020-10-29 05:22:26,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12612 states to 12612 states and 19116 transitions. [2020-10-29 05:22:26,531 INFO L78 Accepts]: Start accepts. Automaton has 12612 states and 19116 transitions. Word has length 1726 [2020-10-29 05:22:26,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:22:26,532 INFO L481 AbstractCegarLoop]: Abstraction has 12612 states and 19116 transitions. [2020-10-29 05:22:26,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:22:26,532 INFO L276 IsEmpty]: Start isEmpty. Operand 12612 states and 19116 transitions. [2020-10-29 05:22:26,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1733 [2020-10-29 05:22:26,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:22:26,609 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-29 05:22:26,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:22:26,609 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:22:26,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:22:26,611 INFO L82 PathProgramCache]: Analyzing trace with hash -704761621, now seen corresponding path program 1 times [2020-10-29 05:22:26,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:22:26,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934208580] [2020-10-29 05:22:26,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:22:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:22:26,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:27,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:31,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:22:31,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1760 [2020-10-29 05:22:31,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:22:31,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 05:22:31,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:22:31,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:22:31,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:22:31,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:22:31,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 05:22:31,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:22:32,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:22:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:22:32,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:32,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:22:32,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:22:32,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:22:32,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:22:32,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:22:32,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:22:32,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:22:32,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:22:32,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:22:32,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:22:32,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:22:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:22:32,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:32,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:22:32,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 05:22:32,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:22:32,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 05:22:32,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:22:32,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:22:32,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:22:32,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:22:32,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 05:22:32,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:22:32,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 05:22:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:22:32,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:22:32,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:22:32,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:22:32,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:22:32,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 05:22:32,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:22:32,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:22:32,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:22:32,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 05:22:32,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:22:32,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:22:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 35 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 05:22:33,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934208580] [2020-10-29 05:22:33,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:22:33,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:22:33,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063916739] [2020-10-29 05:22:33,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:22:33,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:22:33,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:22:33,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:22:33,858 INFO L87 Difference]: Start difference. First operand 12612 states and 19116 transitions. Second operand 7 states.