/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:45:16,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:45:16,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:45:16,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:45:16,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:45:16,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:45:16,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:45:16,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:45:16,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:45:16,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:45:16,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:45:16,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:45:16,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:45:16,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:45:16,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:45:16,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:45:16,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:45:16,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:45:16,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:45:16,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:45:16,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:45:16,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:45:16,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:45:16,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:45:16,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:45:16,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:45:16,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:45:16,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:45:16,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:45:16,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:45:16,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:45:16,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:45:16,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:45:16,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:45:16,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:45:16,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:45:16,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:45:16,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:45:16,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:45:16,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:45:16,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:45:16,136 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 [2020-09-24 20:45:16,177 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:45:16,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:45:16,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:45:16,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:45:16,179 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:45:16,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:45:16,180 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:45:16,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:45:16,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:45:16,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:45:16,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:45:16,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:45:16,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:45:16,181 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:45:16,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:45:16,182 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:45:16,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:45:16,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:45:16,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:45:16,183 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:45:16,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:45:16,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:45:16,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:45:16,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:45:16,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:45:16,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:45:16,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:45:16,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:45:16,184 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:45:16,185 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=BIGGEST;log-additional-information=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=BIGGEST;log-additional-information=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=BIGGEST;log-additional-information=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=BIGGEST;log-additional-information=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=BIGGEST;log-additional-information=true; [2020-09-24 20:45:16,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:45:16,649 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:45:16,654 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:45:16,655 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:45:16,656 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:45:16,657 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-24 20:45:16,749 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4cb7845b/ad5ad331ce414042a87593acbaab0e85/FLAG1b7f68c93 [2020-09-24 20:45:17,531 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:45:17,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-24 20:45:17,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4cb7845b/ad5ad331ce414042a87593acbaab0e85/FLAG1b7f68c93 [2020-09-24 20:45:17,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4cb7845b/ad5ad331ce414042a87593acbaab0e85 [2020-09-24 20:45:17,632 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:45:17,637 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:45:17,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:45:17,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:45:17,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:45:17,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:45:17" (1/1) ... [2020-09-24 20:45:17,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@701ef800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:17, skipping insertion in model container [2020-09-24 20:45:17,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:45:17" (1/1) ... [2020-09-24 20:45:17,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:45:17,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:45:19,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:45:19,421 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:45:20,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:45:20,888 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:45:20,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:20 WrapperNode [2020-09-24 20:45:20,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:45:20,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:45:20,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:45:20,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:45:20,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:20" (1/1) ... [2020-09-24 20:45:20,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:20" (1/1) ... [2020-09-24 20:45:20,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:20" (1/1) ... [2020-09-24 20:45:20,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:20" (1/1) ... [2020-09-24 20:45:21,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:20" (1/1) ... [2020-09-24 20:45:21,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:20" (1/1) ... [2020-09-24 20:45:21,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:20" (1/1) ... [2020-09-24 20:45:21,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:45:21,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:45:21,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:45:21,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:45:21,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:20" (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 [2020-09-24 20:45:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:45:21,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:45:21,185 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 20:45:21,185 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:45:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:45:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 20:45:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-24 20:45:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 20:45:21,187 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 20:45:21,187 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 20:45:21,188 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 20:45:21,188 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 20:45:21,188 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 20:45:21,188 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 20:45:21,189 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 20:45:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 20:45:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-24 20:45:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-09-24 20:45:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 20:45:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 20:45:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:45:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:45:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:45:26,337 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:45:26,338 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:45:26,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:45:26 BoogieIcfgContainer [2020-09-24 20:45:26,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:45:26,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:45:26,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:45:26,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:45:26,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:45:17" (1/3) ... [2020-09-24 20:45:26,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5911a2b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:45:26, skipping insertion in model container [2020-09-24 20:45:26,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:45:20" (2/3) ... [2020-09-24 20:45:26,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5911a2b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:45:26, skipping insertion in model container [2020-09-24 20:45:26,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:45:26" (3/3) ... [2020-09-24 20:45:26,372 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-24 20:45:26,385 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:45:26,404 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:45:26,429 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:45:26,472 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:45:26,473 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:45:26,473 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:45:26,473 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:45:26,473 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:45:26,473 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:45:26,474 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:45:26,474 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:45:26,539 INFO L276 IsEmpty]: Start isEmpty. Operand 3169 states. [2020-09-24 20:45:26,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1324 [2020-09-24 20:45:26,656 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:45:26,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:45:26,660 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:45:26,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:45:26,671 INFO L82 PathProgramCache]: Analyzing trace with hash -123251649, now seen corresponding path program 1 times [2020-09-24 20:45:26,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:45:26,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615399928] [2020-09-24 20:45:26,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:45:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:29,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:30,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:31,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:32,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:33,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:33,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:33,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:45:33,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1330 [2020-09-24 20:45:33,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:45:33,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5258 [2020-09-24 20:45:33,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:45:33,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:45:33,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 420 [2020-09-24 20:45:33,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-09-24 20:45:33,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 20:45:35,694 WARN L193 SmtUtils]: Spent 951.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-09-24 20:45:35,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:45:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:45:35,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:45:35,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:45:35,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-24 20:45:35,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:45:35,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 20:45:35,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:45:35,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:45:35,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:45:35,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:45:35,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:45:38,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:45:38,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615399928] [2020-09-24 20:45:38,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:45:38,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:45:38,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793355637] [2020-09-24 20:45:38,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:45:38,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:45:38,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:45:38,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:45:38,598 INFO L87 Difference]: Start difference. First operand 3169 states. Second operand 5 states. [2020-09-24 20:46:05,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:46:05,973 INFO L93 Difference]: Finished difference Result 8552 states and 11736 transitions. [2020-09-24 20:46:05,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:46:05,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1323 [2020-09-24 20:46:05,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:46:06,037 INFO L225 Difference]: With dead ends: 8552 [2020-09-24 20:46:06,037 INFO L226 Difference]: Without dead ends: 5405 [2020-09-24 20:46:06,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:46:06,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5405 states. [2020-09-24 20:46:06,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5405 to 5403. [2020-09-24 20:46:06,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5403 states. [2020-09-24 20:46:06,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5403 states to 5403 states and 7084 transitions. [2020-09-24 20:46:06,314 INFO L78 Accepts]: Start accepts. Automaton has 5403 states and 7084 transitions. Word has length 1323 [2020-09-24 20:46:06,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:46:06,317 INFO L479 AbstractCegarLoop]: Abstraction has 5403 states and 7084 transitions. [2020-09-24 20:46:06,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:46:06,317 INFO L276 IsEmpty]: Start isEmpty. Operand 5403 states and 7084 transitions. [2020-09-24 20:46:06,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1326 [2020-09-24 20:46:06,525 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:46:06,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:46:06,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:46:06,527 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:46:06,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:46:06,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1425355778, now seen corresponding path program 1 times [2020-09-24 20:46:06,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:46:06,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822534184] [2020-09-24 20:46:06,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:46:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:46:07,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:08,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:08,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:09,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:10,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:46:10,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking...