/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:14:31,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:14:31,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:14:31,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:14:31,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:14:31,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:14:31,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:14:31,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:14:31,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:14:31,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:14:31,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:14:31,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:14:31,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:14:31,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:14:31,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:14:31,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:14:31,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:14:31,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:14:31,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:14:31,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:14:31,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:14:31,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:14:31,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:14:31,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:14:31,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:14:31,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:14:31,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:14:31,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:14:31,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:14:31,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:14:31,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:14:31,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:14:31,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:14:31,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:14:31,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:14:31,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:14:31,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:14:31,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:14:31,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:14:31,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:14:31,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:14:31,107 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 [2020-09-25 09:14:31,133 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:14:31,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:14:31,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:14:31,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:14:31,135 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:14:31,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:14:31,136 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:14:31,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:14:31,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:14:31,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:14:31,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:14:31,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:14:31,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:14:31,137 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:14:31,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:14:31,138 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:14:31,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:14:31,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:14:31,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:14:31,138 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:14:31,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:14:31,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:14:31,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:14:31,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:14:31,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:14:31,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:14:31,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:14:31,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:14:31,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:14:31,140 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:14:31,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:14:31,662 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:14:31,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:14:31,669 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:14:31,670 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:14:31,672 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-09-25 09:14:31,750 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0429c627/7ec7a51e652e4f5bbf2fc2d226b4fa4d/FLAG39ef077f0 [2020-09-25 09:14:32,628 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:14:32,629 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-09-25 09:14:32,656 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0429c627/7ec7a51e652e4f5bbf2fc2d226b4fa4d/FLAG39ef077f0 [2020-09-25 09:14:33,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0429c627/7ec7a51e652e4f5bbf2fc2d226b4fa4d [2020-09-25 09:14:33,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:14:33,180 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:14:33,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:14:33,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:14:33,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:14:33,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:14:33" (1/1) ... [2020-09-25 09:14:33,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@569e4624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:14:33, skipping insertion in model container [2020-09-25 09:14:33,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:14:33" (1/1) ... [2020-09-25 09:14:33,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:14:33,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:14:35,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:14:35,323 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:14:36,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:14:36,603 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:14:36,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:14:36 WrapperNode [2020-09-25 09:14:36,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:14:36,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:14:36,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:14:36,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:14:36,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:14:36" (1/1) ... [2020-09-25 09:14:36,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:14:36" (1/1) ... [2020-09-25 09:14:36,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:14:36" (1/1) ... [2020-09-25 09:14:36,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:14:36" (1/1) ... [2020-09-25 09:14:36,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:14:36" (1/1) ... [2020-09-25 09:14:36,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:14:36" (1/1) ... [2020-09-25 09:14:36,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:14:36" (1/1) ... [2020-09-25 09:14:36,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:14:36,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:14:36,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:14:36,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:14:36,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:14:36" (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 [2020-09-25 09:14:36,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:14:36,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:14:36,977 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 09:14:36,977 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:14:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:14:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 09:14:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 09:14:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 09:14:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 09:14:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 09:14:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 09:14:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 09:14:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 09:14:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 09:14:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 09:14:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-25 09:14:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-09-25 09:14:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 09:14:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 09:14:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:14:36,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:14:36,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:14:42,218 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:14:42,219 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 09:14:42,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:14:42 BoogieIcfgContainer [2020-09-25 09:14:42,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:14:42,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:14:42,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:14:42,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:14:42,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:14:33" (1/3) ... [2020-09-25 09:14:42,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54942bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:14:42, skipping insertion in model container [2020-09-25 09:14:42,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:14:36" (2/3) ... [2020-09-25 09:14:42,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54942bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:14:42, skipping insertion in model container [2020-09-25 09:14:42,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:14:42" (3/3) ... [2020-09-25 09:14:42,249 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-09-25 09:14:42,265 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:14:42,279 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-09-25 09:14:42,310 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-25 09:14:42,363 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:14:42,364 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:14:42,364 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:14:42,364 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:14:42,364 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:14:42,365 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:14:42,365 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:14:42,365 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:14:42,448 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states. [2020-09-25 09:14:42,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1428 [2020-09-25 09:14:42,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:14:42,586 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:14:42,586 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:14:42,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:14:42,597 INFO L82 PathProgramCache]: Analyzing trace with hash -283699444, now seen corresponding path program 1 times [2020-09-25 09:14:42,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:14:42,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140083373] [2020-09-25 09:14:42,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:14:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:14:47,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:14:49,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:14:50,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:14:50,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:14:50,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1434 [2020-09-25 09:14:50,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:14:50,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5388 [2020-09-25 09:14:50,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:14:50,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:14:50,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:14:50,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 443 [2020-09-25 09:14:50,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 316 [2020-09-25 09:14:50,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 09:14:54,431 WARN L193 SmtUtils]: Spent 970.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-09-25 09:14:54,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:14:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:14:54,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:14:54,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:14:54,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 09:14:54,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:14:54,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 09:14:54,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:14:54,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:14:54,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:14:54,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:14:54,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:14:54,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:14:56,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:14:56,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140083373] [2020-09-25 09:14:56,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:14:56,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:14:56,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972271500] [2020-09-25 09:14:56,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:14:56,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:14:56,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:14:56,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:14:56,850 INFO L87 Difference]: Start difference. First operand 3644 states. Second operand 5 states.