/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=0.2 --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.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:39:02,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:39:02,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:39:02,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:39:02,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:39:02,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:39:02,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:39:02,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:39:02,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:39:02,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:39:02,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:39:02,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:39:02,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:39:02,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:39:02,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:39:02,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:39:02,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:39:02,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:39:02,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:39:02,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:39:02,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:39:02,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:39:02,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:39:02,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:39:02,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:39:02,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:39:02,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:39:02,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:39:02,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:39:02,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:39:02,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:39:02,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:39:02,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:39:02,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:39:02,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:39:02,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:39:02,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:39:02,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:39:02,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:39:02,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:39:02,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:39:02,340 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 04:39:02,367 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:39:02,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:39:02,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:39:02,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:39:02,370 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:39:02,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:39:02,370 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:39:02,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:39:02,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:39:02,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:39:02,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:39:02,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:39:02,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:39:02,371 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:39:02,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:39:02,372 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:39:02,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:39:02,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:39:02,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:39:02,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:39:02,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:39:02,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:39:02,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:39:02,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:39:02,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:39:02,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:39:02,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:39:02,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:39:02,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:39:02,375 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 04:39:02,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:39:02,906 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:39:02,916 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:39:02,918 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:39:02,918 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:39:02,920 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-09-25 04:39:03,011 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c15e41097/6bd5eeecdeb44ccaa52977fbaea5bb8a/FLAGa3038ca72 [2020-09-25 04:39:03,947 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:39:03,948 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-09-25 04:39:03,993 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c15e41097/6bd5eeecdeb44ccaa52977fbaea5bb8a/FLAGa3038ca72 [2020-09-25 04:39:04,456 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c15e41097/6bd5eeecdeb44ccaa52977fbaea5bb8a [2020-09-25 04:39:04,469 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:39:04,474 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:39:04,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:39:04,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:39:04,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:39:04,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:39:04" (1/1) ... [2020-09-25 04:39:04,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@693e2903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:39:04, skipping insertion in model container [2020-09-25 04:39:04,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:39:04" (1/1) ... [2020-09-25 04:39:04,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:39:04,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:39:07,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:39:07,138 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:39:08,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:39:08,958 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:39:08,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:39:08 WrapperNode [2020-09-25 04:39:08,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:39:08,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:39:08,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:39:08,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:39:08,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:39:08" (1/1) ... [2020-09-25 04:39:08,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:39:08" (1/1) ... [2020-09-25 04:39:09,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:39:08" (1/1) ... [2020-09-25 04:39:09,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:39:08" (1/1) ... [2020-09-25 04:39:09,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:39:08" (1/1) ... [2020-09-25 04:39:09,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:39:08" (1/1) ... [2020-09-25 04:39:09,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:39:08" (1/1) ... [2020-09-25 04:39:09,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:39:09,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:39:09,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:39:09,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:39:09,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:39:08" (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 [2020-09-25 04:39:09,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:39:09,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:39:09,453 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 04:39:09,454 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:39:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:39:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 04:39:09,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 04:39:09,456 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 04:39:09,456 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 04:39:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 04:39:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 04:39:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 04:39:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 04:39:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 04:39:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 04:39:09,458 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-25 04:39:09,459 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-09-25 04:39:09,459 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 04:39:09,459 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 04:39:09,459 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:39:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:39:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:39:17,705 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:39:17,706 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:39:17,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:39:17 BoogieIcfgContainer [2020-09-25 04:39:17,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:39:17,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:39:17,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:39:17,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:39:17,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:39:04" (1/3) ... [2020-09-25 04:39:17,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7656d252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:39:17, skipping insertion in model container [2020-09-25 04:39:17,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:39:08" (2/3) ... [2020-09-25 04:39:17,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7656d252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:39:17, skipping insertion in model container [2020-09-25 04:39:17,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:39:17" (3/3) ... [2020-09-25 04:39:17,743 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-09-25 04:39:17,755 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:39:17,771 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-09-25 04:39:17,795 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-25 04:39:17,848 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:39:17,849 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:39:17,849 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:39:17,849 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:39:17,849 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:39:17,850 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:39:17,850 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:39:17,850 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:39:17,934 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states. [2020-09-25 04:39:18,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1307 [2020-09-25 04:39:18,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:39:18,048 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] [2020-09-25 04:39:18,049 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:39:18,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:39:18,058 INFO L82 PathProgramCache]: Analyzing trace with hash 472805393, now seen corresponding path program 1 times [2020-09-25 04:39:18,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:39:18,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382246102] [2020-09-25 04:39:18,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:39:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:39:20,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:39:21,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:39:22,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:39:23,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:39:23,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:39:24,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:39:24,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:39:24,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1313 [2020-09-25 04:39:24,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:39:24,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5476 [2020-09-25 04:39:24,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:39:24,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:39:24,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:39:24,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 700 [2020-09-25 04:39:24,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 04:39:24,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:39:26,738 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 409 [2020-09-25 04:39:26,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:39:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:39:26,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:39:26,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:39:26,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 04:39:26,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:39:26,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 04:39:26,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:39:26,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:39:26,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:39:26,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:39:26,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:39:26,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:39:28,121 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 04:39:28,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382246102] [2020-09-25 04:39:28,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:39:28,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:39:28,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85761874] [2020-09-25 04:39:28,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:39:28,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:39:28,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:39:28,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:39:28,158 INFO L87 Difference]: Start difference. First operand 5254 states. Second operand 4 states.