/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.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:00:59,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:00:59,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:00:59,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:00:59,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:00:59,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:00:59,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:00:59,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:00:59,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:00:59,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:00:59,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:00:59,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:00:59,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:00:59,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:00:59,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:00:59,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:00:59,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:00:59,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:00:59,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:00:59,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:00:59,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:00:59,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:00:59,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:00:59,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:00:59,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:00:59,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:00:59,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:00:59,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:00:59,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:00:59,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:00:59,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:00:59,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:00:59,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:00:59,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:00:59,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:00:59,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:00:59,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:00:59,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:00:59,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:00:59,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:00:59,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:00:59,370 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 [2020-10-28 00:00:59,431 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:00:59,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:00:59,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:00:59,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:00:59,434 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:00:59,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:00:59,435 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:00:59,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:00:59,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:00:59,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:00:59,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:00:59,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:00:59,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:00:59,436 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:00:59,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:00:59,441 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:00:59,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:00:59,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:00:59,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:00:59,442 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:00:59,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:00:59,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:00:59,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:00:59,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:00:59,443 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:00:59,443 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:00:59,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:00:59,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:00:59,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:00:59,451 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:00:59,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:00:59,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:00:59,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:00:59,858 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:00:59,859 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:00:59,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c [2020-10-28 00:00:59,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/790fa8077/c900bf05060d41319598ed0eda06cd5e/FLAGfe75785d4 [2020-10-28 00:01:01,285 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:01:01,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c [2020-10-28 00:01:01,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/790fa8077/c900bf05060d41319598ed0eda06cd5e/FLAGfe75785d4 [2020-10-28 00:01:01,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/790fa8077/c900bf05060d41319598ed0eda06cd5e [2020-10-28 00:01:01,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:01:01,939 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:01:01,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:01:01,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:01:01,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:01:01,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:01:01" (1/1) ... [2020-10-28 00:01:01,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5df73845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:01:01, skipping insertion in model container [2020-10-28 00:01:01,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:01:01" (1/1) ... [2020-10-28 00:01:01,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:01:02,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:01:05,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:01:06,024 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:01:08,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:01:08,640 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:01:08,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:01:08 WrapperNode [2020-10-28 00:01:08,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:01:08,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:01:08,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:01:08,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:01:08,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:01:08" (1/1) ... [2020-10-28 00:01:08,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:01:08" (1/1) ... [2020-10-28 00:01:08,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:01:08" (1/1) ... [2020-10-28 00:01:08,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:01:08" (1/1) ... [2020-10-28 00:01:08,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:01:08" (1/1) ... [2020-10-28 00:01:09,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:01:08" (1/1) ... [2020-10-28 00:01:09,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:01:08" (1/1) ... [2020-10-28 00:01:09,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:01:09,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:01:09,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:01:09,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:01:09,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:01:08" (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 [2020-10-28 00:01:09,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:01:09,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:01:09,298 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:01:09,298 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:01:09,299 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:01:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:01:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:01:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:01:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:01:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:01:09,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:01:09,300 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:01:09,300 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:01:09,300 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:01:09,300 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:01:09,300 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:01:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:01:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:01:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 00:01:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 00:01:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-28 00:01:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-28 00:01:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2020-10-28 00:01:09,302 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:01:09,302 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:01:09,302 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:01:09,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:01:09,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:01:09,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:01:09,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:01:09,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:01:09,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:01:22,842 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:01:22,845 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:01:22,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:01:22 BoogieIcfgContainer [2020-10-28 00:01:22,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:01:22,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:01:22,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:01:22,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:01:22,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:01:01" (1/3) ... [2020-10-28 00:01:22,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1e75b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:01:22, skipping insertion in model container [2020-10-28 00:01:22,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:01:08" (2/3) ... [2020-10-28 00:01:22,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1e75b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:01:22, skipping insertion in model container [2020-10-28 00:01:22,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:01:22" (3/3) ... [2020-10-28 00:01:22,892 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+lhb-reducer.c [2020-10-28 00:01:22,913 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:01:22,931 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:01:22,965 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:01:23,009 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:01:23,009 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:01:23,010 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:01:23,010 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:01:23,010 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:01:23,010 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:01:23,010 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:01:23,010 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:01:23,082 INFO L276 IsEmpty]: Start isEmpty. Operand 3902 states. [2020-10-28 00:01:23,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 00:01:23,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:01:23,125 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] [2020-10-28 00:01:23,126 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:01:23,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:01:23,133 INFO L82 PathProgramCache]: Analyzing trace with hash 549039713, now seen corresponding path program 1 times [2020-10-28 00:01:23,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:01:23,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719012809] [2020-10-28 00:01:23,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:01:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:01:24,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:01:24,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:01:25,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:01:25,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:01:25,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:01:26,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:01:27,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:01:28,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:01:29,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:01:29,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 00:01:29,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:01:29,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-28 00:01:29,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:01:29,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:01:29,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 00:01:29,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 00:01:29,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:01:39,788 WARN L193 SmtUtils]: Spent 10.33 s on a formula simplification that was a NOOP. DAG size: 1291 [2020-10-28 00:01:39,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:01:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:01:39,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:01:39,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:01:39,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:01:39,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:01:39,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 00:01:39,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:01:39,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:01:39,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:01:39,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:01:39,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:01:40,113 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 00:01:40,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719012809] [2020-10-28 00:01:40,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:01:40,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:01:40,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898156374] [2020-10-28 00:01:40,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:01:40,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:01:40,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:01:40,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:01:40,139 INFO L87 Difference]: Start difference. First operand 3902 states. Second operand 7 states. [2020-10-28 00:01:50,527 WARN L193 SmtUtils]: Spent 10.14 s on a formula simplification that was a NOOP. DAG size: 1295 [2020-10-28 00:03:29,574 WARN L193 SmtUtils]: Spent 10.08 s on a formula simplification that was a NOOP. DAG size: 1295 [2020-10-28 00:03:41,598 WARN L193 SmtUtils]: Spent 9.57 s on a formula simplification that was a NOOP. DAG size: 1297 [2020-10-28 00:03:54,858 WARN L193 SmtUtils]: Spent 9.67 s on a formula simplification that was a NOOP. DAG size: 1292 [2020-10-28 00:04:05,098 WARN L193 SmtUtils]: Spent 9.79 s on a formula simplification that was a NOOP. DAG size: 1293 [2020-10-28 00:04:18,137 WARN L193 SmtUtils]: Spent 9.83 s on a formula simplification that was a NOOP. DAG size: 1294 [2020-10-28 00:04:28,011 WARN L193 SmtUtils]: Spent 9.81 s on a formula simplification that was a NOOP. DAG size: 1295 [2020-10-28 00:04:38,288 WARN L193 SmtUtils]: Spent 9.80 s on a formula simplification that was a NOOP. DAG size: 1296 [2020-10-28 00:04:38,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:04:38,437 INFO L93 Difference]: Finished difference Result 10433 states and 18235 transitions. [2020-10-28 00:04:38,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 00:04:38,440 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-28 00:04:38,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:04:38,522 INFO L225 Difference]: With dead ends: 10433 [2020-10-28 00:04:38,523 INFO L226 Difference]: Without dead ends: 8145 [2020-10-28 00:04:38,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 89.7s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-28 00:04:38,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8145 states. [2020-10-28 00:04:38,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8145 to 6179. [2020-10-28 00:04:38,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6179 states. [2020-10-28 00:04:38,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6179 states to 6179 states and 8540 transitions. [2020-10-28 00:04:38,966 INFO L78 Accepts]: Start accepts. Automaton has 6179 states and 8540 transitions. Word has length 122 [2020-10-28 00:04:38,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:04:38,969 INFO L481 AbstractCegarLoop]: Abstraction has 6179 states and 8540 transitions. [2020-10-28 00:04:38,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:04:38,970 INFO L276 IsEmpty]: Start isEmpty. Operand 6179 states and 8540 transitions. [2020-10-28 00:04:38,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-28 00:04:38,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:04:38,996 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] [2020-10-28 00:04:38,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:04:38,997 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:04:38,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:04:38,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1851017246, now seen corresponding path program 1 times [2020-10-28 00:04:38,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:04:39,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642269321] [2020-10-28 00:04:39,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:04:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:04:39,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:39,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:39,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:39,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:40,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:40,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:44,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:04:44,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 00:04:44,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:04:44,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-28 00:04:44,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:04:44,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:04:44,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 00:04:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 00:04:44,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:04:54,154 WARN L193 SmtUtils]: Spent 9.56 s on a formula simplification that was a NOOP. DAG size: 1291 [2020-10-28 00:04:54,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:04:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:04:54,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:04:54,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:04:54,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:04:54,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:04:54,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 00:04:54,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:04:54,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:04:54,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:04:54,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:04:54,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:04:54,380 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 00:04:54,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642269321] [2020-10-28 00:04:54,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:04:54,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:04:54,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872069042] [2020-10-28 00:04:54,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:04:54,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:04:54,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:04:54,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:04:54,384 INFO L87 Difference]: Start difference. First operand 6179 states and 8540 transitions. Second operand 7 states.