/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:07:37,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:07:37,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:07:37,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:07:37,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:07:37,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:07:37,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:07:37,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:07:37,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:07:37,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:07:37,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:07:37,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:07:37,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:07:37,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:07:37,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:07:37,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:07:37,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:07:37,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:07:37,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:07:37,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:07:37,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:07:37,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:07:37,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:07:37,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:07:37,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:07:37,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:07:37,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:07:37,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:07:37,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:07:37,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:07:37,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:07:37,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:07:37,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:07:37,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:07:37,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:07:37,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:07:37,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:07:37,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:07:37,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:07:37,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:07:37,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:07:37,293 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 16:07:37,339 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:07:37,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:07:37,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:07:37,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:07:37,341 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:07:37,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:07:37,342 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:07:37,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:07:37,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:07:37,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:07:37,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:07:37,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:07:37,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:07:37,344 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:07:37,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:07:37,344 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:07:37,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:07:37,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:07:37,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:07:37,345 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:07:37,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:07:37,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:07:37,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:07:37,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:07:37,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:07:37,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:07:37,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:07:37,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:07:37,347 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:07:37,348 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:07:37,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:07:37,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:07:37,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:07:37,757 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:07:37,758 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:07:37,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label05.c [2020-10-27 16:07:37,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d82f9d6f/381329b8c4ac46e7b71fcfb489854682/FLAG7254fcdfc [2020-10-27 16:07:39,310 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:07:39,311 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label05.c [2020-10-27 16:07:39,381 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d82f9d6f/381329b8c4ac46e7b71fcfb489854682/FLAG7254fcdfc [2020-10-27 16:07:39,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d82f9d6f/381329b8c4ac46e7b71fcfb489854682 [2020-10-27 16:07:39,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:07:39,861 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:07:39,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:07:39,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:07:39,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:07:39,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:07:39" (1/1) ... [2020-10-27 16:07:39,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2802ec41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:07:39, skipping insertion in model container [2020-10-27 16:07:39,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:07:39" (1/1) ... [2020-10-27 16:07:39,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:07:40,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:07:42,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:07:42,332 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:07:43,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:07:43,678 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:07:43,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:07:43 WrapperNode [2020-10-27 16:07:43,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:07:43,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:07:43,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:07:43,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:07:43,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:07:43" (1/1) ... [2020-10-27 16:07:43,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:07:43" (1/1) ... [2020-10-27 16:07:43,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:07:43" (1/1) ... [2020-10-27 16:07:43,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:07:43" (1/1) ... [2020-10-27 16:07:44,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:07:43" (1/1) ... [2020-10-27 16:07:44,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:07:43" (1/1) ... [2020-10-27 16:07:44,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:07:43" (1/1) ... [2020-10-27 16:07:44,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:07:44,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:07:44,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:07:44,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:07:44,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:07:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:07:44,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:07:44,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:07:44,652 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:07:44,652 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:07:44,652 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:07:44,652 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:07:44,653 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:07:44,653 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:07:44,653 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-27 16:07:44,653 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-27 16:07:44,653 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-27 16:07:44,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:07:44,653 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:07:44,654 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:07:44,654 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:07:44,654 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:07:44,654 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:07:44,654 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-27 16:07:44,654 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-27 16:07:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-27 16:07:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:07:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:07:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:07:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:07:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:07:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:07:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:07:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:07:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:07:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:07:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:07:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:07:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:08:00,005 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:08:00,005 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:08:00,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:08:00 BoogieIcfgContainer [2020-10-27 16:08:00,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:08:00,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:08:00,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:08:00,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:08:00,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:07:39" (1/3) ... [2020-10-27 16:08:00,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67531f4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:08:00, skipping insertion in model container [2020-10-27 16:08:00,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:07:43" (2/3) ... [2020-10-27 16:08:00,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67531f4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:08:00, skipping insertion in model container [2020-10-27 16:08:00,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:08:00" (3/3) ... [2020-10-27 16:08:00,022 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label05.c [2020-10-27 16:08:00,034 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:08:00,044 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:08:00,057 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:08:00,108 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:08:00,108 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:08:00,109 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:08:00,109 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:08:00,109 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:08:00,109 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:08:00,109 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:08:00,110 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:08:00,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-27 16:08:00,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1709 [2020-10-27 16:08:00,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:08:00,323 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, 1, 1, 1, 1] [2020-10-27 16:08:00,324 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:08:00,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:08:00,331 INFO L82 PathProgramCache]: Analyzing trace with hash -75663049, now seen corresponding path program 1 times [2020-10-27 16:08:00,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:08:00,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627923128] [2020-10-27 16:08:00,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:08:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:08:02,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:08:06,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:08:06,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1732 [2020-10-27 16:08:06,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:08:06,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5353 [2020-10-27 16:08:06,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:08:06,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 16:08:06,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:08:06,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1723 [2020-10-27 16:08:06,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 16:08:08,568 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 16:08:08,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:08:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:08:08,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:08:08,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:08:08,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:08:08,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:08:08,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 16:08:08,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:08:08,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:08:08,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:08:08,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:08:08,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:08:12,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:08:12,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627923128] [2020-10-27 16:08:12,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:08:12,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 16:08:12,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983970421] [2020-10-27 16:08:12,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:08:12,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:08:13,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:08:13,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:08:13,015 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 5 states. [2020-10-27 16:08:13,225 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-27 16:08:13,726 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-27 16:09:00,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:09:00,160 INFO L93 Difference]: Finished difference Result 8129 states and 15417 transitions. [2020-10-27 16:09:00,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:09:00,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1708 [2020-10-27 16:09:00,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:09:00,231 INFO L225 Difference]: With dead ends: 8129 [2020-10-27 16:09:00,231 INFO L226 Difference]: Without dead ends: 5835 [2020-10-27 16:09:00,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:09:00,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5835 states. [2020-10-27 16:09:00,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5835 to 5802. [2020-10-27 16:09:00,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5802 states. [2020-10-27 16:09:00,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5802 states to 5802 states and 9375 transitions. [2020-10-27 16:09:00,523 INFO L78 Accepts]: Start accepts. Automaton has 5802 states and 9375 transitions. Word has length 1708 [2020-10-27 16:09:00,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:09:00,528 INFO L481 AbstractCegarLoop]: Abstraction has 5802 states and 9375 transitions. [2020-10-27 16:09:00,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:09:00,529 INFO L276 IsEmpty]: Start isEmpty. Operand 5802 states and 9375 transitions. [2020-10-27 16:09:00,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1718 [2020-10-27 16:09:00,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:09:00,683 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:09:00,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:09:00,684 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:09:00,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:09:00,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1597515059, now seen corresponding path program 1 times [2020-10-27 16:09:00,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:09:00,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224538631] [2020-10-27 16:09:00,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:09:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:09:00,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:09:02,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:09:05,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:09:05,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1743 [2020-10-27 16:09:05,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:09:05,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 16:09:05,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:09:05,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 16:09:05,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 16:09:05,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1720 [2020-10-27 16:09:05,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:09:07,584 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 16:09:07,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:09:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:09:07,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:09:07,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:09:07,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:09:07,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:09:07,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:09:07,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:09:07,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:09:07,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:09:07,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:09:07,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:09:07,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:09:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:09:07,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:09:07,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:09:07,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:09:07,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:09:07,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 16:09:07,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:09:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:09:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:09:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 16:09:07,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:09:10,247 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:09:10,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224538631] [2020-10-27 16:09:10,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:09:10,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:09:10,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615566105] [2020-10-27 16:09:10,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:09:10,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:09:10,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:09:10,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:09:10,254 INFO L87 Difference]: Start difference. First operand 5802 states and 9375 transitions. Second operand 5 states. [2020-10-27 16:09:10,556 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-27 16:09:48,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:09:48,546 INFO L93 Difference]: Finished difference Result 16917 states and 27749 transitions. [2020-10-27 16:09:48,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:09:48,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1717 [2020-10-27 16:09:48,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:09:48,612 INFO L225 Difference]: With dead ends: 16917 [2020-10-27 16:09:48,612 INFO L226 Difference]: Without dead ends: 11121 [2020-10-27 16:09:48,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:09:48,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11121 states. [2020-10-27 16:09:49,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11121 to 11076. [2020-10-27 16:09:49,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11076 states. [2020-10-27 16:09:49,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11076 states to 11076 states and 15663 transitions. [2020-10-27 16:09:49,034 INFO L78 Accepts]: Start accepts. Automaton has 11076 states and 15663 transitions. Word has length 1717 [2020-10-27 16:09:49,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:09:49,038 INFO L481 AbstractCegarLoop]: Abstraction has 11076 states and 15663 transitions. [2020-10-27 16:09:49,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:09:49,038 INFO L276 IsEmpty]: Start isEmpty. Operand 11076 states and 15663 transitions. [2020-10-27 16:09:49,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1724 [2020-10-27 16:09:49,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:09:49,103 INFO L422 BasicCegarLoop]: trace histogram [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, 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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] [2020-10-27 16:09:49,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:09:49,103 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:09:49,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:09:49,106 INFO L82 PathProgramCache]: Analyzing trace with hash -655043159, now seen corresponding path program 1 times [2020-10-27 16:09:49,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:09:49,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054210761] [2020-10-27 16:09:49,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:09:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:09:49,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:09:50,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:09:54,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:09:54,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1749 [2020-10-27 16:09:54,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:09:54,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 16:09:54,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:09:54,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 16:09:54,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 16:09:54,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1692 [2020-10-27 16:09:54,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:09:56,395 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 16:09:56,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:09:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:09:56,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:09:56,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:09:56,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:09:56,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:09:56,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 16:09:56,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:09:56,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:09:56,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:09:56,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:09:56,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:09:56,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:09:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:09:56,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:09:56,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:09:56,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 16:09:56,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:09:56,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 16:09:56,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:09:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 16:09:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:09:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 16:09:56,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:10:13,376 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:10:13,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054210761] [2020-10-27 16:10:13,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:10:13,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:10:13,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214369622] [2020-10-27 16:10:13,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:10:13,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:10:13,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:10:13,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:10:13,381 INFO L87 Difference]: Start difference. First operand 11076 states and 15663 transitions. Second operand 6 states. [2020-10-27 16:10:13,577 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-27 16:10:13,956 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-27 16:11:06,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:11:06,321 INFO L93 Difference]: Finished difference Result 34317 states and 50608 transitions. [2020-10-27 16:11:06,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:11:06,323 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1723 [2020-10-27 16:11:06,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:11:06,417 INFO L225 Difference]: With dead ends: 34317 [2020-10-27 16:11:06,417 INFO L226 Difference]: Without dead ends: 21572 [2020-10-27 16:11:06,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:11:06,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21572 states. [2020-10-27 16:11:07,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21572 to 21568. [2020-10-27 16:11:07,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21568 states. [2020-10-27 16:11:07,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21568 states to 21568 states and 28631 transitions. [2020-10-27 16:11:07,116 INFO L78 Accepts]: Start accepts. Automaton has 21568 states and 28631 transitions. Word has length 1723 [2020-10-27 16:11:07,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:11:07,117 INFO L481 AbstractCegarLoop]: Abstraction has 21568 states and 28631 transitions. [2020-10-27 16:11:07,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 16:11:07,118 INFO L276 IsEmpty]: Start isEmpty. Operand 21568 states and 28631 transitions. [2020-10-27 16:11:07,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1731 [2020-10-27 16:11:07,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:11:07,220 INFO L422 BasicCegarLoop]: trace histogram [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, 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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] [2020-10-27 16:11:07,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:11:07,220 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:11:07,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:11:07,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1441620424, now seen corresponding path program 1 times [2020-10-27 16:11:07,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:11:07,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539680060] [2020-10-27 16:11:07,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:11:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:11:07,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:11:08,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:11:10,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:11:12,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:11:12,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1756 [2020-10-27 16:11:12,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:11:12,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 16:11:12,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:11:12,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 16:11:12,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 16:11:12,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1720 [2020-10-27 16:11:12,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:11:13,909 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 16:11:13,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:11:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:11:13,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:11:13,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:11:13,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:11:13,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:11:13,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:11:13,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:11:13,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:11:13,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:11:13,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:11:13,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:11:13,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:11:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:11:13,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:11:14,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:11:14,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 16:11:14,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:11:14,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 16:11:14,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:11:14,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:11:14,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:11:14,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 16:11:14,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:11:17,126 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:11:17,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539680060] [2020-10-27 16:11:17,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:11:17,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:11:17,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271166434] [2020-10-27 16:11:17,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:11:17,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:11:17,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:11:17,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:11:17,130 INFO L87 Difference]: Start difference. First operand 21568 states and 28631 transitions. Second operand 6 states. [2020-10-27 16:11:17,497 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-27 16:11:17,899 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 76