/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_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:16:20,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:16:20,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:16:20,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:16:20,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:16:20,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:16:20,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:16:20,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:16:20,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:16:20,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:16:20,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:16:20,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:16:20,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:16:20,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:16:20,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:16:20,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:16:20,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:16:20,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:16:20,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:16:20,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:16:20,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:16:20,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:16:20,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:16:20,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:16:20,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:16:20,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:16:20,133 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:16:20,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:16:20,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:16:20,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:16:20,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:16:20,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:16:20,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:16:20,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:16:20,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:16:20,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:16:20,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:16:20,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:16:20,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:16:20,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:16:20,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:16:20,145 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 16:16:20,171 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:16:20,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:16:20,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:16:20,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:16:20,174 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:16:20,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:16:20,174 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:16:20,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:16:20,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:16:20,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:16:20,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:16:20,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:16:20,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:16:20,176 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:16:20,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:16:20,176 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:16:20,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:16:20,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:16:20,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:16:20,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:16:20,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:16:20,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:16:20,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:16:20,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:16:20,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:16:20,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:16:20,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:16:20,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:16:20,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:16:20,179 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:16:20,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:16:20,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:16:20,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:16:20,568 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:16:20,569 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:16:20,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label37.c [2020-10-27 16:16:20,639 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bd59d119/f7c73fcb24964b69a46da9524771155d/FLAG49d0c4577 [2020-10-27 16:16:22,005 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:16:22,006 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label37.c [2020-10-27 16:16:22,072 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bd59d119/f7c73fcb24964b69a46da9524771155d/FLAG49d0c4577 [2020-10-27 16:16:22,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bd59d119/f7c73fcb24964b69a46da9524771155d [2020-10-27 16:16:22,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:16:22,564 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:16:22,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:16:22,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:16:22,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:16:22,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:16:22" (1/1) ... [2020-10-27 16:16:22,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a64add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:16:22, skipping insertion in model container [2020-10-27 16:16:22,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:16:22" (1/1) ... [2020-10-27 16:16:22,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:16:22,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:16:25,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:16:25,080 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:16:26,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:16:26,363 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:16:26,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:16:26 WrapperNode [2020-10-27 16:16:26,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:16:26,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:16:26,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:16:26,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:16:26,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:16:26" (1/1) ... [2020-10-27 16:16:26,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:16:26" (1/1) ... [2020-10-27 16:16:26,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:16:26" (1/1) ... [2020-10-27 16:16:26,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:16:26" (1/1) ... [2020-10-27 16:16:26,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:16:26" (1/1) ... [2020-10-27 16:16:26,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:16:26" (1/1) ... [2020-10-27 16:16:26,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:16:26" (1/1) ... [2020-10-27 16:16:26,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:16:26,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:16:26,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:16:26,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:16:26,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:16:26" (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 16:16:26,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:16:26,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:16:26,952 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:16:26,953 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:16:26,953 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:16:26,953 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:16:26,953 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:16:26,953 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:16:26,954 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-27 16:16:26,954 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-27 16:16:26,955 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-27 16:16:26,955 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:16:26,955 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:16:26,955 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:16:26,955 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:16:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:16:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:16:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-27 16:16:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-27 16:16:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-27 16:16:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:16:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:16:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:16:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:16:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:16:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:16:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:16:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:16:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:16:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:16:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:16:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:16:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:16:36,550 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:16:36,550 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:16:36,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:16:36 BoogieIcfgContainer [2020-10-27 16:16:36,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:16:36,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:16:36,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:16:36,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:16:36,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:16:22" (1/3) ... [2020-10-27 16:16:36,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e75065a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:16:36, skipping insertion in model container [2020-10-27 16:16:36,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:16:26" (2/3) ... [2020-10-27 16:16:36,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e75065a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:16:36, skipping insertion in model container [2020-10-27 16:16:36,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:16:36" (3/3) ... [2020-10-27 16:16:36,564 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label37.c [2020-10-27 16:16:36,575 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:16:36,582 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:16:36,595 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:16:36,633 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:16:36,633 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:16:36,633 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:16:36,633 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:16:36,633 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:16:36,634 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:16:36,634 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:16:36,634 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:16:36,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-27 16:16:36,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1668 [2020-10-27 16:16:36,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:16:36,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:16:36,806 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:16:36,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:16:36,814 INFO L82 PathProgramCache]: Analyzing trace with hash -574585599, now seen corresponding path program 1 times [2020-10-27 16:16:36,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:16:36,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800439294] [2020-10-27 16:16:36,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:16:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:16:38,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:16:43,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:16:43,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1691 [2020-10-27 16:16:43,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:16:43,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-27 16:16:43,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:16:43,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 16:16:43,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:16:43,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1682 [2020-10-27 16:16:43,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 16:16:44,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:16:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:16:44,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:16:44,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:16:44,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:16:44,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:16:44,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 16:16:44,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:16:44,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:16:44,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:16:44,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:16:44,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:16:48,032 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 16:16:48,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800439294] [2020-10-27 16:16:48,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:16:48,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 16:16:48,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445411505] [2020-10-27 16:16:48,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:16:48,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:16:48,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:16:48,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:16:48,060 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 5 states. [2020-10-27 16:17:22,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:17:22,024 INFO L93 Difference]: Finished difference Result 8284 states and 15705 transitions. [2020-10-27 16:17:22,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:17:22,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1667 [2020-10-27 16:17:22,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:17:22,106 INFO L225 Difference]: With dead ends: 8284 [2020-10-27 16:17:22,106 INFO L226 Difference]: Without dead ends: 5990 [2020-10-27 16:17:22,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:17:22,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5990 states. [2020-10-27 16:17:22,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 5834. [2020-10-27 16:17:22,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5834 states. [2020-10-27 16:17:22,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5834 states to 5834 states and 10150 transitions. [2020-10-27 16:17:22,442 INFO L78 Accepts]: Start accepts. Automaton has 5834 states and 10150 transitions. Word has length 1667 [2020-10-27 16:17:22,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:17:22,449 INFO L481 AbstractCegarLoop]: Abstraction has 5834 states and 10150 transitions. [2020-10-27 16:17:22,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:17:22,450 INFO L276 IsEmpty]: Start isEmpty. Operand 5834 states and 10150 transitions. [2020-10-27 16:17:22,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1701 [2020-10-27 16:17:22,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:17:22,722 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 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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] [2020-10-27 16:17:22,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:17:22,723 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:17:22,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:17:22,725 INFO L82 PathProgramCache]: Analyzing trace with hash 591883584, now seen corresponding path program 1 times [2020-10-27 16:17:22,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:17:22,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758527738] [2020-10-27 16:17:22,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:17:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:17:22,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:17:22,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:17:27,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:17:27,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1728 [2020-10-27 16:17:27,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:17:27,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 16:17:27,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:17:27,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:17:27,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 16:17:27,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 16:17:27,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 16:17:29,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:17:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:17:29,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:17:29,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:17:29,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:17:29,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:17:29,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 16:17:29,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:17:29,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:17:29,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:17:29,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:17:29,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 16:17:29,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:17:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:17:29,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:17:29,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:17:29,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 16:17:29,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:17:29,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 16:17:29,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:17:29,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:17:29,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:17:29,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 16:17:29,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:17:29,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 16:17:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:17:29,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:17:29,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:17:29,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 16:17:29,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:17:29,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 16:17:29,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:17:29,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:17:29,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:17:29,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 16:17:29,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:17:30,803 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:17:30,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758527738] [2020-10-27 16:17:30,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:17:30,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:17:30,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866511604] [2020-10-27 16:17:30,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:17:30,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:17:30,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:17:30,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:17:30,810 INFO L87 Difference]: Start difference. First operand 5834 states and 10150 transitions. Second operand 7 states. [2020-10-27 16:18:02,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:18:02,660 INFO L93 Difference]: Finished difference Result 17413 states and 30808 transitions. [2020-10-27 16:18:02,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 16:18:02,661 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1700 [2020-10-27 16:18:02,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:18:02,729 INFO L225 Difference]: With dead ends: 17413 [2020-10-27 16:18:02,729 INFO L226 Difference]: Without dead ends: 11585 [2020-10-27 16:18:02,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 16:18:02,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11585 states. [2020-10-27 16:18:03,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11585 to 11299. [2020-10-27 16:18:03,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11299 states. [2020-10-27 16:18:03,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11299 states to 11299 states and 17732 transitions. [2020-10-27 16:18:03,116 INFO L78 Accepts]: Start accepts. Automaton has 11299 states and 17732 transitions. Word has length 1700 [2020-10-27 16:18:03,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:18:03,117 INFO L481 AbstractCegarLoop]: Abstraction has 11299 states and 17732 transitions. [2020-10-27 16:18:03,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:18:03,117 INFO L276 IsEmpty]: Start isEmpty. Operand 11299 states and 17732 transitions. [2020-10-27 16:18:03,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1706 [2020-10-27 16:18:03,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:18:03,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-27 16:18:03,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:18:03,206 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:18:03,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:18:03,207 INFO L82 PathProgramCache]: Analyzing trace with hash 2045478277, now seen corresponding path program 1 times [2020-10-27 16:18:03,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:18:03,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872520810] [2020-10-27 16:18:03,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:18:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:18:03,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:18:03,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:18:04,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:18:08,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:18:08,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1731 [2020-10-27 16:18:08,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:18:08,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5239 [2020-10-27 16:18:08,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:18:08,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:18:08,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 16:18:08,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:18:08,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:18:09,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:18:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:18:09,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:18:09,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:18:09,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:18:09,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:18:09,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 16:18:09,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:18:09,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:18:09,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:18:09,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:18:09,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:18:09,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:18:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:18:09,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:18:09,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:18:09,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 16:18:09,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:18:09,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 16:18:09,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:18:09,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:18:09,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 16:18:09,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:18:09,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:18:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:18:10,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872520810] [2020-10-27 16:18:10,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:18:10,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 16:18:10,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234570554] [2020-10-27 16:18:10,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:18:10,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:18:10,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:18:10,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:18:10,587 INFO L87 Difference]: Start difference. First operand 11299 states and 17732 transitions. Second operand 5 states. [2020-10-27 16:18:38,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:18:38,852 INFO L93 Difference]: Finished difference Result 33244 states and 53486 transitions. [2020-10-27 16:18:38,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:18:38,854 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1705 [2020-10-27 16:18:38,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:18:38,937 INFO L225 Difference]: With dead ends: 33244 [2020-10-27 16:18:38,937 INFO L226 Difference]: Without dead ends: 21951 [2020-10-27 16:18:38,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 16:18:38,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21951 states. [2020-10-27 16:18:39,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21951 to 21945. [2020-10-27 16:18:39,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21945 states. [2020-10-27 16:18:39,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21945 states to 21945 states and 31173 transitions. [2020-10-27 16:18:39,554 INFO L78 Accepts]: Start accepts. Automaton has 21945 states and 31173 transitions. Word has length 1705 [2020-10-27 16:18:39,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:18:39,555 INFO L481 AbstractCegarLoop]: Abstraction has 21945 states and 31173 transitions. [2020-10-27 16:18:39,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:18:39,556 INFO L276 IsEmpty]: Start isEmpty. Operand 21945 states and 31173 transitions. [2020-10-27 16:18:39,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1714 [2020-10-27 16:18:39,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:18:39,642 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, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:18:39,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:18:39,642 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:18:39,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:18:39,644 INFO L82 PathProgramCache]: Analyzing trace with hash -106463554, now seen corresponding path program 1 times [2020-10-27 16:18:39,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:18:39,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229773272] [2020-10-27 16:18:39,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:18:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:18:39,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:18:40,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:18:44,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:18:44,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1739 [2020-10-27 16:18:44,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:18:44,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 16:18:44,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:18:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 16:18:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 16:18:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1273 [2020-10-27 16:18:44,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:18:51,000 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-27 16:18:51,135 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2020-10-27 16:18:51,275 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2020-10-27 16:18:51,459 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-10-27 16:18:51,627 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2020-10-27 16:18:51,801 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2020-10-27 16:18:51,974 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2020-10-27 16:18:52,165 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2020-10-27 16:18:52,347 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-10-27 16:18:52,530 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-10-27 16:18:52,714 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-10-27 16:18:52,906 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-10-27 16:18:53,102 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-10-27 16:18:53,301 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-10-27 16:18:53,502 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-10-27 16:18:53,702 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2020-10-27 16:18:53,924 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 39 [2020-10-27 16:18:54,204 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 39 [2020-10-27 16:18:54,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:18:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:18:54,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:18:54,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:18:54,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:18:54,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:18:54,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 16:18:54,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:18:54,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:18:54,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:18:54,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:18:54,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:18:54,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:18:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:18:54,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:18:54,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:18:54,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 16:18:54,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:18:54,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 16:18:54,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:18:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:18:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:18:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 16:18:54,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:19:17,082 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:19:17,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229773272] [2020-10-27 16:19:17,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:19:17,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 16:19:17,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168491383] [2020-10-27 16:19:17,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 16:19:17,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:19:17,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 16:19:17,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-10-27 16:19:17,086 INFO L87 Difference]: Start difference. First operand 21945 states and 31173 transitions. Second operand 23 states. [2020-10-27 16:19:18,644 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-27 16:19:18,923 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 16:19:24,115 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 108 [2020-10-27 16:19:28,463 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 16:19:31,792 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 16:19:32,246 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 104 [2020-10-27 16:19:33,821 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103 [2020-10-27 16:19:38,493 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-10-27 16:19:45,148 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 16:19:45,416 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 16:19:57,702 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-27 16:19:57,993 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 101