/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=SHALLOWEST --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/locks/test_locks_15-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:28:27,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:28:27,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:28:28,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:28:28,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:28:28,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:28:28,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:28:28,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:28:28,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:28:28,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:28:28,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:28:28,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:28:28,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:28:28,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:28:28,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:28:28,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:28:28,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:28:28,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:28:28,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:28:28,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:28:28,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:28:28,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:28:28,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:28:28,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:28:28,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:28:28,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:28:28,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:28:28,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:28:28,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:28:28,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:28:28,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:28:28,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:28:28,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:28:28,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:28:28,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:28:28,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:28:28,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:28:28,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:28:28,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:28:28,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:28:28,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:28:28,161 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 01:28:28,214 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:28:28,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:28:28,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:28:28,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:28:28,219 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:28:28,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:28:28,219 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:28:28,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:28:28,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:28:28,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:28:28,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:28:28,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:28:28,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:28:28,221 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:28:28,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:28:28,222 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:28:28,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:28:28,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:28:28,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:28:28,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:28:28,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:28:28,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:28:28,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:28:28,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:28:28,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:28:28,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:28:28,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:28:28,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:28:28,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:28:28,225 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:28:28,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:28:28,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:28:28,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:28:28,649 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:28:28,650 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:28:28,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_15-1.c [2020-10-27 01:28:28,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28c1fc8b0/d2fb4242be0140acbc9c6afa76041248/FLAG25eaf21ca [2020-10-27 01:28:29,405 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:28:29,407 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_15-1.c [2020-10-27 01:28:29,423 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28c1fc8b0/d2fb4242be0140acbc9c6afa76041248/FLAG25eaf21ca [2020-10-27 01:28:29,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28c1fc8b0/d2fb4242be0140acbc9c6afa76041248 [2020-10-27 01:28:29,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:28:29,743 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:28:29,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:28:29,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:28:29,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:28:29,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:28:29" (1/1) ... [2020-10-27 01:28:29,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a579660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:28:29, skipping insertion in model container [2020-10-27 01:28:29,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:28:29" (1/1) ... [2020-10-27 01:28:29,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:28:29,808 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:28:30,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:28:30,025 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:28:30,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:28:30,121 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:28:30,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:28:30 WrapperNode [2020-10-27 01:28:30,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:28:30,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:28:30,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:28:30,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:28:30,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:28:30" (1/1) ... [2020-10-27 01:28:30,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:28:30" (1/1) ... [2020-10-27 01:28:30,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:28:30" (1/1) ... [2020-10-27 01:28:30,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:28:30" (1/1) ... [2020-10-27 01:28:30,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:28:30" (1/1) ... [2020-10-27 01:28:30,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:28:30" (1/1) ... [2020-10-27 01:28:30,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:28:30" (1/1) ... [2020-10-27 01:28:30,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:28:30,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:28:30,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:28:30,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:28:30,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:28:30" (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 01:28:30,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:28:30,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:28:30,278 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:28:30,278 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:28:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:28:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:28:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:28:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:28:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:28:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:28:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:28:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:28:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:28:30,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:28:30,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:28:30,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:28:31,149 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:28:31,152 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 01:28:31,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:28:31 BoogieIcfgContainer [2020-10-27 01:28:31,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:28:31,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:28:31,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:28:31,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:28:31,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:28:29" (1/3) ... [2020-10-27 01:28:31,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f418aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:28:31, skipping insertion in model container [2020-10-27 01:28:31,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:28:30" (2/3) ... [2020-10-27 01:28:31,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f418aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:28:31, skipping insertion in model container [2020-10-27 01:28:31,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:28:31" (3/3) ... [2020-10-27 01:28:31,167 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-1.c [2020-10-27 01:28:31,183 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:28:31,191 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:28:31,207 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:28:31,257 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:28:31,257 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:28:31,257 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:28:31,258 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:28:31,258 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:28:31,258 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:28:31,258 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:28:31,258 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:28:31,287 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-10-27 01:28:31,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 01:28:31,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:28:31,300 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] [2020-10-27 01:28:31,301 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:28:31,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:28:31,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1271024494, now seen corresponding path program 1 times [2020-10-27 01:28:31,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:28:31,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066783490] [2020-10-27 01:28:31,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:28:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:28:31,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:28:31,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:28:31,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 01:28:31,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:28:31,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-27 01:28:31,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:28:31,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:28:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 01:28:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:28:31,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 01:28:32,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:28:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:28:32,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:28:32,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:28:32,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:28:32,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:28:32,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 01:28:32,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:28:32,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:28:32,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:28:32,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:28:32,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:28:32,115 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 01:28:32,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066783490] [2020-10-27 01:28:32,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:28:32,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:28:32,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269047838] [2020-10-27 01:28:32,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:28:32,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:28:32,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:28:32,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:28:32,146 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 4 states. [2020-10-27 01:28:32,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:28:32,569 INFO L93 Difference]: Finished difference Result 122 states and 217 transitions. [2020-10-27 01:28:32,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 01:28:32,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-27 01:28:32,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:28:32,586 INFO L225 Difference]: With dead ends: 122 [2020-10-27 01:28:32,586 INFO L226 Difference]: Without dead ends: 103 [2020-10-27 01:28:32,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:28:32,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-27 01:28:32,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2020-10-27 01:28:32,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-27 01:28:32,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 131 transitions. [2020-10-27 01:28:32,650 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 131 transitions. Word has length 27 [2020-10-27 01:28:32,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:28:32,651 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 131 transitions. [2020-10-27 01:28:32,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:28:32,651 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 131 transitions. [2020-10-27 01:28:32,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 01:28:32,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:28:32,653 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] [2020-10-27 01:28:32,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:28:32,654 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:28:32,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:28:32,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1270801542, now seen corresponding path program 1 times [2020-10-27 01:28:32,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:28:32,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871094289] [2020-10-27 01:28:32,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:28:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:28:32,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:28:32,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:28:32,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 01:28:32,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:28:32,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-27 01:28:32,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:28:32,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:28:32,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 01:28:32,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:28:32,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:28:32,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:28:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:28:32,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:28:32,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:28:32,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:28:32,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:28:32,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:28:32,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:28:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:28:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:28:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:28:32,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:28:32,992 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 01:28:32,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871094289] [2020-10-27 01:28:32,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:28:32,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:28:32,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467310855] [2020-10-27 01:28:32,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:28:32,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:28:32,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:28:32,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:28:32,997 INFO L87 Difference]: Start difference. First operand 72 states and 131 transitions. Second operand 4 states. [2020-10-27 01:28:33,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:28:33,266 INFO L93 Difference]: Finished difference Result 170 states and 317 transitions. [2020-10-27 01:28:33,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 01:28:33,267 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-27 01:28:33,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:28:33,269 INFO L225 Difference]: With dead ends: 170 [2020-10-27 01:28:33,269 INFO L226 Difference]: Without dead ends: 104 [2020-10-27 01:28:33,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:28:33,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-27 01:28:33,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-27 01:28:33,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-27 01:28:33,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 189 transitions. [2020-10-27 01:28:33,293 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 189 transitions. Word has length 27 [2020-10-27 01:28:33,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:28:33,294 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 189 transitions. [2020-10-27 01:28:33,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:28:33,294 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 189 transitions. [2020-10-27 01:28:33,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 01:28:33,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:28:33,295 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] [2020-10-27 01:28:33,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:28:33,296 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:28:33,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:28:33,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1334999060, now seen corresponding path program 1 times [2020-10-27 01:28:33,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:28:33,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987962884] [2020-10-27 01:28:33,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:28:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:28:33,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:28:33,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:28:33,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 01:28:33,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:28:33,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 01:28:33,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:28:33,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:28:33,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 01:28:33,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 01:28:33,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:28:33,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:28:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:28:33,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:28:33,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:28:33,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:28:33,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:28:33,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:28:33,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:28:33,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:28:33,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:28:33,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:28:33,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:28:33,487 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 01:28:33,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987962884] [2020-10-27 01:28:33,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:28:33,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:28:33,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72680200] [2020-10-27 01:28:33,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:28:33,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:28:33,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:28:33,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:28:33,490 INFO L87 Difference]: Start difference. First operand 103 states and 189 transitions. Second operand 4 states. [2020-10-27 01:28:33,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:28:33,763 INFO L93 Difference]: Finished difference Result 157 states and 285 transitions. [2020-10-27 01:28:33,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 01:28:33,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-27 01:28:33,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:28:33,766 INFO L225 Difference]: With dead ends: 157 [2020-10-27 01:28:33,766 INFO L226 Difference]: Without dead ends: 106 [2020-10-27 01:28:33,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:28:33,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-27 01:28:33,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-27 01:28:33,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-27 01:28:33,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 189 transitions. [2020-10-27 01:28:33,780 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 189 transitions. Word has length 27 [2020-10-27 01:28:33,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:28:33,780 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 189 transitions. [2020-10-27 01:28:33,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:28:33,780 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 189 transitions. [2020-10-27 01:28:33,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 01:28:33,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:28:33,782 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] [2020-10-27 01:28:33,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:28:33,782 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:28:33,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:28:33,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1335222012, now seen corresponding path program 1 times [2020-10-27 01:28:33,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:28:33,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358780543] [2020-10-27 01:28:33,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:28:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:28:33,805 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:28:33,805 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:28:33,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:28:33,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:28:33 BoogieIcfgContainer [2020-10-27 01:28:33,830 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:28:33,833 INFO L168 Benchmark]: Toolchain (without parser) took 4093.38 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 126.9 MB in the beginning and 142.9 MB in the end (delta: -16.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 8.0 GB. [2020-10-27 01:28:33,833 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:28:33,834 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.92 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 115.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:28:33,835 INFO L168 Benchmark]: Boogie Preprocessor took 52.29 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 113.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:28:33,836 INFO L168 Benchmark]: RCFGBuilder took 978.10 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 123.8 MB in the end (delta: -10.4 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. [2020-10-27 01:28:33,837 INFO L168 Benchmark]: TraceAbstraction took 2672.31 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 123.3 MB in the beginning and 142.9 MB in the end (delta: -19.6 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. [2020-10-27 01:28:33,840 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 374.92 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 115.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.29 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 113.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 978.10 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 123.8 MB in the end (delta: -10.4 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2672.31 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 123.3 MB in the beginning and 142.9 MB in the end (delta: -19.6 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L50] int p15 = __VERIFIER_nondet_int(); [L51] int lk15; [L54] int cond; [L56] COND TRUE 1 [L57] cond = __VERIFIER_nondet_int() [L58] COND FALSE !(cond == 0) [L61] lk1 = 0 [L63] lk2 = 0 [L65] lk3 = 0 [L67] lk4 = 0 [L69] lk5 = 0 [L71] lk6 = 0 [L73] lk7 = 0 [L75] lk8 = 0 [L77] lk9 = 0 [L79] lk10 = 0 [L81] lk11 = 0 [L83] lk12 = 0 [L85] lk13 = 0 [L87] lk14 = 0 [L89] lk15 = 0 [L93] COND FALSE !(p1 != 0) [L97] COND FALSE !(p2 != 0) [L101] COND TRUE p3 != 0 [L102] lk3 = 1 [L105] COND TRUE p4 != 0 [L106] lk4 = 1 [L109] COND TRUE p5 != 0 [L110] lk5 = 1 [L113] COND TRUE p6 != 0 [L114] lk6 = 1 [L117] COND TRUE p7 != 0 [L118] lk7 = 1 [L121] COND TRUE p8 != 0 [L122] lk8 = 1 [L125] COND TRUE p9 != 0 [L126] lk9 = 1 [L129] COND FALSE !(p10 != 0) [L133] COND TRUE p11 != 0 [L134] lk11 = 1 [L137] COND TRUE p12 != 0 [L138] lk12 = 1 [L141] COND TRUE p13 != 0 [L142] lk13 = 1 [L145] COND TRUE p14 != 0 [L146] lk14 = 1 [L149] COND TRUE p15 != 0 [L150] lk15 = 1 [L155] COND FALSE !(p1 != 0) [L160] COND FALSE !(p2 != 0) [L233] CALL reach_error() [L3] __assert_fail("0", "test_locks_15-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 392 SDtfs, 678 SDslu, 25 SDs, 0 SdLazy, 294 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 33 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 7150 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...