/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_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:19:13,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:19:13,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:19:13,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:19:13,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:19:13,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:19:13,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:19:13,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:19:13,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:19:13,199 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:19:13,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:19:13,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:19:13,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:19:13,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:19:13,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:19:13,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:19:13,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:19:13,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:19:13,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:19:13,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:19:13,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:19:13,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:19:13,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:19:13,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:19:13,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:19:13,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:19:13,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:19:13,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:19:13,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:19:13,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:19:13,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:19:13,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:19:13,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:19:13,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:19:13,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:19:13,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:19:13,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:19:13,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:19:13,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:19:13,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:19:13,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:19:13,272 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 16:19:13,321 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:19:13,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:19:13,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:19:13,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:19:13,325 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:19:13,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:19:13,325 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:19:13,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:19:13,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:19:13,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:19:13,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:19:13,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:19:13,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:19:13,327 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:19:13,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:19:13,328 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:19:13,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:19:13,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:19:13,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:19:13,329 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:19:13,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:19:13,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:19:13,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:19:13,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:19:13,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:19:13,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:19:13,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:19:13,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:19:13,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:19:13,331 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:19:13,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:19:13,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:19:13,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:19:13,740 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:19:13,741 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:19:13,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label47.c [2020-10-27 16:19:13,813 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/baf67b970/9946e563d04241a4a5d50ab45deb9478/FLAG61b812460 [2020-10-27 16:19:15,088 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:19:15,089 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label47.c [2020-10-27 16:19:15,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/baf67b970/9946e563d04241a4a5d50ab45deb9478/FLAG61b812460 [2020-10-27 16:19:15,345 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/baf67b970/9946e563d04241a4a5d50ab45deb9478 [2020-10-27 16:19:15,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:19:15,357 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:19:15,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:19:15,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:19:15,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:19:15,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:19:15" (1/1) ... [2020-10-27 16:19:15,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed13075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:19:15, skipping insertion in model container [2020-10-27 16:19:15,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:19:15" (1/1) ... [2020-10-27 16:19:15,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:19:15,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:19:17,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:19:17,740 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:19:18,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:19:19,008 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:19:19,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:19:19 WrapperNode [2020-10-27 16:19:19,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:19:19,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:19:19,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:19:19,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:19:19,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:19:19" (1/1) ... [2020-10-27 16:19:19,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:19:19" (1/1) ... [2020-10-27 16:19:19,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:19:19" (1/1) ... [2020-10-27 16:19:19,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:19:19" (1/1) ... [2020-10-27 16:19:19,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:19:19" (1/1) ... [2020-10-27 16:19:19,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:19:19" (1/1) ... [2020-10-27 16:19:19,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:19:19" (1/1) ... [2020-10-27 16:19:19,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:19:19,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:19:19,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:19:19,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:19:19,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:19:19" (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 16:19:19,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:19:19,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:19:19,780 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:19:19,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:19:19,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:19:19,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:19:19,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:19:19,781 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:19:19,781 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-27 16:19:19,781 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-27 16:19:19,781 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-27 16:19:19,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:19:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:19:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:19:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:19:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:19:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:19:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-27 16:19:19,783 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-27 16:19:19,783 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-27 16:19:19,783 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:19:19,783 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:19:19,783 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:19:19,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:19:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:19:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:19:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:19:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:19:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:19:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:19:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:19:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:19:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:19:29,692 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:19:29,693 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:19:29,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:19:29 BoogieIcfgContainer [2020-10-27 16:19:29,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:19:29,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:19:29,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:19:29,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:19:29,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:19:15" (1/3) ... [2020-10-27 16:19:29,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d059870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:19:29, skipping insertion in model container [2020-10-27 16:19:29,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:19:19" (2/3) ... [2020-10-27 16:19:29,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d059870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:19:29, skipping insertion in model container [2020-10-27 16:19:29,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:19:29" (3/3) ... [2020-10-27 16:19:29,710 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label47.c [2020-10-27 16:19:29,722 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:19:29,733 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:19:29,748 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:19:29,799 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:19:29,799 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:19:29,799 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:19:29,799 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:19:29,799 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:19:29,799 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:19:29,800 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:19:29,800 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:19:29,865 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-27 16:19:30,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1677 [2020-10-27 16:19:30,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:19:30,039 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] [2020-10-27 16:19:30,040 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:19:30,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:19:30,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1210561719, now seen corresponding path program 1 times [2020-10-27 16:19:30,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:19:30,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403319856] [2020-10-27 16:19:30,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:19:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:19:31,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:19:36,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:19:36,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1700 [2020-10-27 16:19:36,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:19:36,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 16:19:36,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:19:36,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 16:19:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:19:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1691 [2020-10-27 16:19:36,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 16:19:37,715 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 16:19:37,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:19:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:19:37,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:19:37,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:19:37,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:19:37,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:19:37,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 16:19:37,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:19:37,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:19:37,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:19:37,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:19:37,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:19:41,211 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 16:19:41,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403319856] [2020-10-27 16:19:41,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:19:41,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 16:19:41,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508829691] [2020-10-27 16:19:41,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:19:41,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:19:41,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:19:41,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:19:41,241 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 5 states. [2020-10-27 16:19:41,439 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-27 16:19:41,727 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-27 16:20:14,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:20:14,518 INFO L93 Difference]: Finished difference Result 8130 states and 15411 transitions. [2020-10-27 16:20:14,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:20:14,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1676 [2020-10-27 16:20:14,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:20:14,603 INFO L225 Difference]: With dead ends: 8130 [2020-10-27 16:20:14,603 INFO L226 Difference]: Without dead ends: 5836 [2020-10-27 16:20:14,622 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 16:20:14,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5836 states. [2020-10-27 16:20:14,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5836 to 5802. [2020-10-27 16:20:14,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5802 states. [2020-10-27 16:20:14,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5802 states to 5802 states and 9385 transitions. [2020-10-27 16:20:14,927 INFO L78 Accepts]: Start accepts. Automaton has 5802 states and 9385 transitions. Word has length 1676 [2020-10-27 16:20:14,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:20:14,933 INFO L481 AbstractCegarLoop]: Abstraction has 5802 states and 9385 transitions. [2020-10-27 16:20:14,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:20:14,933 INFO L276 IsEmpty]: Start isEmpty. Operand 5802 states and 9385 transitions. [2020-10-27 16:20:15,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1701 [2020-10-27 16:20:15,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:20:15,061 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:20:15,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:20:15,063 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:20:15,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:20:15,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1592611612, now seen corresponding path program 1 times [2020-10-27 16:20:15,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:20:15,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494737565] [2020-10-27 16:20:15,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:20:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:20:15,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:15,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:15,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:20,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:20:20,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1728 [2020-10-27 16:20:20,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:20:20,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5154 [2020-10-27 16:20:20,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:20:20,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 16:20:20,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 16:20:20,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1294 [2020-10-27 16:20:20,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 16:20:25,275 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-27 16:20:25,437 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-27 16:20:25,589 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-27 16:20:25,716 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-27 16:20:25,847 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-27 16:20:26,004 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-27 16:20:26,147 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-27 16:20:26,291 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-27 16:20:26,774 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-10-27 16:20:27,077 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2020-10-27 16:20:27,380 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2020-10-27 16:20:27,593 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2020-10-27 16:20:27,838 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 36 [2020-10-27 16:20:27,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:20:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:20:27,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:27,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:20:27,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:20:27,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:20:27,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 16:20:27,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:20:27,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:20:27,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:20:27,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:20:27,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:20:28,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:20:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:20:28,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:28,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:20:28,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:20:28,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:20:28,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 16:20:28,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:20:28,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:20:28,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:20:28,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:20:28,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:20:28,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 16:20:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:20:28,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:28,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:20:28,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 16:20:28,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:20:28,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 16:20:28,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:20:28,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:20:28,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:20:28,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 16:20:28,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:20:53,077 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 16:20:53,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494737565] [2020-10-27 16:20:53,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:20:53,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 16:20:53,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788628457] [2020-10-27 16:20:53,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 16:20:53,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:20:53,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 16:20:53,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2020-10-27 16:20:53,087 INFO L87 Difference]: Start difference. First operand 5802 states and 9385 transitions. Second operand 23 states. [2020-10-27 16:20:53,569 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 16:20:53,832 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 16:20:54,896 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 16:21:00,713 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-27 16:21:00,960 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 16:21:07,537 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-27 16:21:07,800 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 16:21:11,335 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 16:21:11,627 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-27 16:21:14,938 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-27 16:21:15,177 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 16:21:21,836 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-27 16:21:22,075 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 16:21:23,814 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 16:21:25,759 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 111 [2020-10-27 16:21:29,391 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 16:21:29,650 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 16:21:31,132 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 100 [2020-10-27 16:21:38,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:21:38,891 INFO L93 Difference]: Finished difference Result 12909 states and 21402 transitions. [2020-10-27 16:21:38,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 16:21:38,892 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1700 [2020-10-27 16:21:38,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:21:38,936 INFO L225 Difference]: With dead ends: 12909 [2020-10-27 16:21:38,936 INFO L226 Difference]: Without dead ends: 7113 [2020-10-27 16:21:38,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=212, Invalid=1428, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 16:21:38,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7113 states. [2020-10-27 16:21:39,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7113 to 7106. [2020-10-27 16:21:39,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7106 states. [2020-10-27 16:21:39,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7106 states to 7106 states and 10723 transitions. [2020-10-27 16:21:39,174 INFO L78 Accepts]: Start accepts. Automaton has 7106 states and 10723 transitions. Word has length 1700 [2020-10-27 16:21:39,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:21:39,177 INFO L481 AbstractCegarLoop]: Abstraction has 7106 states and 10723 transitions. [2020-10-27 16:21:39,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 16:21:39,177 INFO L276 IsEmpty]: Start isEmpty. Operand 7106 states and 10723 transitions. [2020-10-27 16:21:39,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1704 [2020-10-27 16:21:39,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:21:39,221 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:21:39,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:21:39,221 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:21:39,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:21:39,222 INFO L82 PathProgramCache]: Analyzing trace with hash 95577859, now seen corresponding path program 1 times [2020-10-27 16:21:39,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:21:39,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661038311] [2020-10-27 16:21:39,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:21:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:21:39,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:21:39,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:21:39,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:21:41,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:21:44,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:21:44,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1731 [2020-10-27 16:21:44,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 16:21:44,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 16:21:44,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:21:44,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:21:44,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 16:21:44,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:21:44,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:21:44,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:21:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:21:44,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:21:44,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:21:44,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:21:44,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:21:44,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 16:21:44,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:21:44,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:21:44,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:21:44,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:21:44,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:21:44,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:21:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:21:44,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:21:44,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:21:44,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:21:44,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:21:44,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 16:21:44,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:21:44,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:21:44,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:21:44,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:21:44,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:21:44,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 16:21:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:21:44,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:21:44,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:21:44,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 16:21:44,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:21:44,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 16:21:44,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:21:44,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:21:44,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 16:21:44,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:21:44,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:21:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 16:21:46,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661038311] [2020-10-27 16:21:46,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:21:46,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 16:21:46,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734120758] [2020-10-27 16:21:46,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:21:46,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:21:46,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:21:46,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:21:46,021 INFO L87 Difference]: Start difference. First operand 7106 states and 10723 transitions. Second operand 5 states. [2020-10-27 16:22:16,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:22:16,886 INFO L93 Difference]: Finished difference Result 19620 states and 30614 transitions. [2020-10-27 16:22:16,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:22:16,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1703 [2020-10-27 16:22:16,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:22:16,960 INFO L225 Difference]: With dead ends: 19620 [2020-10-27 16:22:16,960 INFO L226 Difference]: Without dead ends: 12520 [2020-10-27 16:22:16,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:22:16,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12520 states. [2020-10-27 16:22:17,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12520 to 12427. [2020-10-27 16:22:17,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12427 states. [2020-10-27 16:22:17,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12427 states to 12427 states and 18327 transitions. [2020-10-27 16:22:17,316 INFO L78 Accepts]: Start accepts. Automaton has 12427 states and 18327 transitions. Word has length 1703 [2020-10-27 16:22:17,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:22:17,316 INFO L481 AbstractCegarLoop]: Abstraction has 12427 states and 18327 transitions. [2020-10-27 16:22:17,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:22:17,317 INFO L276 IsEmpty]: Start isEmpty. Operand 12427 states and 18327 transitions. [2020-10-27 16:22:17,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1717 [2020-10-27 16:22:17,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:22:17,382 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:22:17,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:22:17,382 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:22:17,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:22:17,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1754983494, now seen corresponding path program 1 times [2020-10-27 16:22:17,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:22:17,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108454647] [2020-10-27 16:22:17,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:22:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:22:17,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:22:17,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:22:22,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:22:22,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1742 [2020-10-27 16:22:22,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:22:22,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-27 16:22:22,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:22:22,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 16:22:22,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-27 16:22:22,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1231 [2020-10-27 16:22:22,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:22:24,768 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2020-10-27 16:22:24,890 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-10-27 16:22:25,011 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-10-27 16:22:25,132 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-10-27 16:22:25,268 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-10-27 16:22:25,400 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-10-27 16:22:26,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:22:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:22:26,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:22:26,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:22:26,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:22:26,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:22:26,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 16:22:26,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:22:26,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:22:26,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:22:26,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:22:26,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:22:26,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:22:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:22:26,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:22:26,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:22:26,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 16:22:26,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:22:26,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 16:22:26,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:22:26,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:22:26,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:22:26,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 16:22:26,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:22:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:22:46,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108454647] [2020-10-27 16:22:46,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:22:46,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 16:22:46,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798459719] [2020-10-27 16:22:46,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 16:22:46,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:22:46,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 16:22:46,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2020-10-27 16:22:46,317 INFO L87 Difference]: Start difference. First operand 12427 states and 18327 transitions. Second operand 24 states. [2020-10-27 16:22:47,241 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98 [2020-10-27 16:22:47,644 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 106 [2020-10-27 16:22:54,556 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98 [2020-10-27 16:22:54,952 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 106 [2020-10-27 16:22:55,602 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 105 [2020-10-27 16:22:57,265 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 104