/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/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:59:17,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:59:17,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:59:17,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:59:17,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:59:17,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:59:17,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:59:17,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:59:17,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:59:17,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:59:17,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:59:17,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:59:17,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:59:17,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:59:17,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:59:17,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:59:17,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:59:17,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:59:17,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:59:17,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:59:17,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:59:17,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:59:17,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:59:17,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:59:17,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:59:17,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:59:17,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:59:17,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:59:17,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:59:17,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:59:17,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:59:17,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:59:17,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:59:17,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:59:17,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:59:17,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:59:17,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:59:17,414 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:59:17,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:59:17,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:59:17,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:59:17,417 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 23:59:17,446 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:59:17,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:59:17,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:59:17,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:59:17,448 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:59:17,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:59:17,449 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:59:17,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:59:17,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:59:17,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:59:17,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:59:17,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:59:17,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:59:17,450 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:59:17,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:59:17,450 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:59:17,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:59:17,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:59:17,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:59:17,451 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:59:17,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:59:17,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:59:17,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:59:17,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:59:17,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:59:17,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:59:17,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:59:17,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:59:17,453 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:59:17,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:59:17,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:59:17,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:59:17,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:59:17,861 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:59:17,862 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:59:17,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c [2020-10-27 23:59:17,942 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/648d3e583/67c65fe8a0264f108891d445e18ef659/FLAGd3bac2dbc [2020-10-27 23:59:19,073 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:59:19,074 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c [2020-10-27 23:59:19,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/648d3e583/67c65fe8a0264f108891d445e18ef659/FLAGd3bac2dbc [2020-10-27 23:59:19,325 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/648d3e583/67c65fe8a0264f108891d445e18ef659 [2020-10-27 23:59:19,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:59:19,337 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:59:19,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:59:19,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:59:19,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:59:19,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:59:19" (1/1) ... [2020-10-27 23:59:19,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55d2d9d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:59:19, skipping insertion in model container [2020-10-27 23:59:19,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:59:19" (1/1) ... [2020-10-27 23:59:19,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:59:19,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:59:23,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:59:23,191 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:59:25,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:59:25,305 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:59:25,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:59:25 WrapperNode [2020-10-27 23:59:25,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:59:25,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:59:25,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:59:25,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:59:25,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:59:25" (1/1) ... [2020-10-27 23:59:25,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:59:25" (1/1) ... [2020-10-27 23:59:25,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:59:25" (1/1) ... [2020-10-27 23:59:25,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:59:25" (1/1) ... [2020-10-27 23:59:25,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:59:25" (1/1) ... [2020-10-27 23:59:25,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:59:25" (1/1) ... [2020-10-27 23:59:25,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:59:25" (1/1) ... [2020-10-27 23:59:25,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:59:25,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:59:25,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:59:25,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:59:25,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:59:25" (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 23:59:26,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:59:26,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:59:26,058 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:59:26,059 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:59:26,059 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:59:26,059 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:59:26,059 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:59:26,060 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:59:26,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:59:26,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:59:26,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:59:26,060 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:59:26,060 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:59:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:59:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:59:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:59:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:59:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:59:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:59:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 23:59:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-27 23:59:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-27 23:59:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:59:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:59:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:59:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:59:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:59:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:59:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:59:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:59:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:59:48,062 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:59:48,062 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:59:48,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:59:48 BoogieIcfgContainer [2020-10-27 23:59:48,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:59:48,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:59:48,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:59:48,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:59:48,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:59:19" (1/3) ... [2020-10-27 23:59:48,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ece0e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:59:48, skipping insertion in model container [2020-10-27 23:59:48,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:59:25" (2/3) ... [2020-10-27 23:59:48,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ece0e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:59:48, skipping insertion in model container [2020-10-27 23:59:48,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:59:48" (3/3) ... [2020-10-27 23:59:48,080 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c [2020-10-27 23:59:48,092 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:59:48,109 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:59:48,124 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:59:48,172 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:59:48,172 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:59:48,172 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:59:48,172 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:59:48,172 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:59:48,172 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:59:48,173 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:59:48,173 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:59:48,258 INFO L276 IsEmpty]: Start isEmpty. Operand 5476 states. [2020-10-27 23:59:48,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-27 23:59:48,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:59:48,315 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] [2020-10-27 23:59:48,316 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:59:48,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:59:48,329 INFO L82 PathProgramCache]: Analyzing trace with hash 2001317335, now seen corresponding path program 1 times [2020-10-27 23:59:48,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:59:48,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189391456] [2020-10-27 23:59:48,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:59:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:59:49,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:50,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:50,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:51,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:52,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:52,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:54,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:59:54,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 23:59:54,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:59:54,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 23:59:54,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:59:54,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:59:54,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:59:54,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 23:59:54,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:00:42,429 WARN L193 SmtUtils]: Spent 47.42 s on a formula simplification that was a NOOP. DAG size: 2104 [2020-10-28 00:00:42,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:00:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:00:42,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:00:42,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:00:42,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:00:42,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:00:42,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 00:00:42,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:00:42,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:00:42,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:00:42,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:00:42,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:00:42,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:00:42,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189391456] [2020-10-28 00:00:42,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:00:42,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:00:42,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432842201] [2020-10-28 00:00:42,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:00:42,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:00:42,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:00:42,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:00:42,875 INFO L87 Difference]: Start difference. First operand 5476 states. Second operand 7 states. [2020-10-28 00:01:33,754 WARN L193 SmtUtils]: Spent 50.09 s on a formula simplification that was a NOOP. DAG size: 2108