/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=LOWLEXORDER --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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:53:29,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:53:29,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:53:29,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:53:29,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:53:29,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:53:29,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:53:29,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:53:29,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:53:29,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:53:29,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:53:29,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:53:29,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:53:29,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:53:29,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:53:29,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:53:29,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:53:29,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:53:29,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:53:29,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:53:29,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:53:29,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:53:29,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:53:29,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:53:29,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:53:29,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:53:29,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:53:29,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:53:29,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:53:29,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:53:29,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:53:29,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:53:29,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:53:29,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:53:29,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:53:29,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:53:29,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:53:29,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:53:29,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:53:29,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:53:29,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:53:29,340 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 [2020-09-24 21:53:29,400 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:53:29,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:53:29,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:53:29,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:53:29,403 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:53:29,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:53:29,403 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:53:29,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:53:29,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:53:29,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:53:29,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:53:29,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:53:29,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:53:29,405 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:53:29,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:53:29,405 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:53:29,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:53:29,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:53:29,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:53:29,407 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:53:29,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:53:29,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:53:29,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:53:29,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:53:29,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:53:29,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:53:29,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:53:29,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:53:29,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:53:29,409 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:53:29,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:53:29,939 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:53:29,944 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:53:29,946 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:53:29,946 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:53:29,947 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 21:53:30,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8829df73e/bbe9897f1c6d4169a4670426b013dd43/FLAG6141c8160 [2020-09-24 21:53:30,703 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:53:30,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 21:53:30,723 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8829df73e/bbe9897f1c6d4169a4670426b013dd43/FLAG6141c8160 [2020-09-24 21:53:30,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8829df73e/bbe9897f1c6d4169a4670426b013dd43 [2020-09-24 21:53:30,966 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:53:30,973 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:53:30,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:53:30,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:53:30,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:53:30,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:53:30" (1/1) ... [2020-09-24 21:53:30,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37b2c62b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:53:30, skipping insertion in model container [2020-09-24 21:53:30,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:53:30" (1/1) ... [2020-09-24 21:53:30,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:53:31,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:53:31,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:53:31,778 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:53:32,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:53:32,311 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:53:32,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:53:32 WrapperNode [2020-09-24 21:53:32,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:53:32,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:53:32,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:53:32,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:53:32,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:53:32" (1/1) ... [2020-09-24 21:53:32,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:53:32" (1/1) ... [2020-09-24 21:53:32,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:53:32" (1/1) ... [2020-09-24 21:53:32,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:53:32" (1/1) ... [2020-09-24 21:53:32,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:53:32" (1/1) ... [2020-09-24 21:53:32,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:53:32" (1/1) ... [2020-09-24 21:53:32,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:53:32" (1/1) ... [2020-09-24 21:53:32,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:53:32,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:53:32,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:53:32,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:53:32,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:53:32" (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 21:53:32,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:53:32,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:53:32,524 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 21:53:32,524 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:53:32,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:53:32,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 21:53:32,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-24 21:53:32,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 21:53:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 21:53:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 21:53:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 21:53:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 21:53:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 21:53:32,526 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 21:53:32,526 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 21:53:32,526 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 21:53:32,526 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 21:53:32,526 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 21:53:32,527 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:53:32,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:53:32,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:53:34,403 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:53:34,404 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:53:34,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:53:34 BoogieIcfgContainer [2020-09-24 21:53:34,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:53:34,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:53:34,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:53:34,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:53:34,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:53:30" (1/3) ... [2020-09-24 21:53:34,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c71e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:53:34, skipping insertion in model container [2020-09-24 21:53:34,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:53:32" (2/3) ... [2020-09-24 21:53:34,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c71e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:53:34, skipping insertion in model container [2020-09-24 21:53:34,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:53:34" (3/3) ... [2020-09-24 21:53:34,426 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-24 21:53:34,440 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:53:34,453 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-24 21:53:34,476 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-24 21:53:34,509 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:53:34,509 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:53:34,510 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:53:34,510 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:53:34,510 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:53:34,510 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:53:34,510 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:53:34,510 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:53:34,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-09-24 21:53:34,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-09-24 21:53:34,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:53:34,593 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] [2020-09-24 21:53:34,593 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:53:34,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:53:34,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1272027086, now seen corresponding path program 1 times [2020-09-24 21:53:34,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:53:34,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404305995] [2020-09-24 21:53:34,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:53:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:35,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:35,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:36,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:36,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:36,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:36,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:37,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:37,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:40,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:40,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-09-24 21:53:40,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:53:40,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-09-24 21:53:40,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:40,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:53:40,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-24 21:53:40,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 21:53:40,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:53:40,902 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:53:40,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:53:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:40,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:40,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:40,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 21:53:40,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:40,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 21:53:40,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:40,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:40,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:40,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:40,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:53:41,245 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 21:53:41,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404305995] [2020-09-24 21:53:41,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:53:41,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:53:41,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239903464] [2020-09-24 21:53:41,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:53:41,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:53:41,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:53:41,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:53:41,280 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 5 states. [2020-09-24 21:53:50,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:53:50,063 INFO L93 Difference]: Finished difference Result 2939 states and 3816 transitions. [2020-09-24 21:53:50,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:53:50,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 414 [2020-09-24 21:53:50,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:53:50,101 INFO L225 Difference]: With dead ends: 2939 [2020-09-24 21:53:50,102 INFO L226 Difference]: Without dead ends: 1752 [2020-09-24 21:53:50,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:53:50,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2020-09-24 21:53:50,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1629. [2020-09-24 21:53:50,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1629 states. [2020-09-24 21:53:50,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 1939 transitions. [2020-09-24 21:53:50,286 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 1939 transitions. Word has length 414 [2020-09-24 21:53:50,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:53:50,287 INFO L479 AbstractCegarLoop]: Abstraction has 1629 states and 1939 transitions. [2020-09-24 21:53:50,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:53:50,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 1939 transitions. [2020-09-24 21:53:50,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-09-24 21:53:50,299 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:53:50,300 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] [2020-09-24 21:53:50,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:53:50,300 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:53:50,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:53:50,301 INFO L82 PathProgramCache]: Analyzing trace with hash -993206244, now seen corresponding path program 1 times [2020-09-24 21:53:50,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:53:50,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437814524] [2020-09-24 21:53:50,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:53:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:50,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:50,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:50,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:50,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:51,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:51,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:52,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:54,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:54,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:55,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:55,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-09-24 21:53:55,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:53:55,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-09-24 21:53:55,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:55,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:53:55,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-09-24 21:53:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 21:53:55,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:53:55,987 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:53:55,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:53:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:53:56,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:53:56,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:53:56,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 21:53:56,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:53:56,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 21:53:56,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:53:56,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:53:56,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:53:56,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:53:56,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:53:56,309 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 21:53:56,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437814524] [2020-09-24 21:53:56,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:53:56,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:53:56,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214395320] [2020-09-24 21:53:56,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:53:56,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:53:56,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:53:56,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:53:56,316 INFO L87 Difference]: Start difference. First operand 1629 states and 1939 transitions. Second operand 5 states. [2020-09-24 21:54:03,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:54:03,321 INFO L93 Difference]: Finished difference Result 4401 states and 5277 transitions. [2020-09-24 21:54:03,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:54:03,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 415 [2020-09-24 21:54:03,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:54:03,343 INFO L225 Difference]: With dead ends: 4401 [2020-09-24 21:54:03,343 INFO L226 Difference]: Without dead ends: 2986 [2020-09-24 21:54:03,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:54:03,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2020-09-24 21:54:03,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 2863. [2020-09-24 21:54:03,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2863 states. [2020-09-24 21:54:03,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 3433 transitions. [2020-09-24 21:54:03,481 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 3433 transitions. Word has length 415 [2020-09-24 21:54:03,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:54:03,484 INFO L479 AbstractCegarLoop]: Abstraction has 2863 states and 3433 transitions. [2020-09-24 21:54:03,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:54:03,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 3433 transitions. [2020-09-24 21:54:03,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-09-24 21:54:03,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:54:03,497 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] [2020-09-24 21:54:03,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:54:03,498 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:54:03,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:54:03,498 INFO L82 PathProgramCache]: Analyzing trace with hash 702388870, now seen corresponding path program 1 times [2020-09-24 21:54:03,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:54:03,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828932096] [2020-09-24 21:54:03,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:54:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:54:03,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:03,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:03,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:04,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:04,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:05,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:06,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:06,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:07,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:07,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:08,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:08,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:54:08,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-09-24 21:54:08,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 21:54:08,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-09-24 21:54:08,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:54:08,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:54:08,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-09-24 21:54:08,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 21:54:08,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:54:09,108 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:54:09,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:54:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:54:09,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:09,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:54:09,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 21:54:09,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:54:09,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 21:54:09,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:54:09,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:54:09,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:54:09,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:54:09,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:54:09,453 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 21:54:09,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828932096] [2020-09-24 21:54:09,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:54:09,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:54:09,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599382138] [2020-09-24 21:54:09,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:54:09,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:54:09,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:54:09,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:54:09,462 INFO L87 Difference]: Start difference. First operand 2863 states and 3433 transitions. Second operand 5 states. [2020-09-24 21:54:16,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:54:16,460 INFO L93 Difference]: Finished difference Result 7687 states and 9261 transitions. [2020-09-24 21:54:16,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:54:16,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 416 [2020-09-24 21:54:16,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:54:16,486 INFO L225 Difference]: With dead ends: 7687 [2020-09-24 21:54:16,486 INFO L226 Difference]: Without dead ends: 5368 [2020-09-24 21:54:16,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:54:16,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5368 states. [2020-09-24 21:54:16,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5368 to 5260. [2020-09-24 21:54:16,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5260 states. [2020-09-24 21:54:16,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 6313 transitions. [2020-09-24 21:54:16,703 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 6313 transitions. Word has length 416 [2020-09-24 21:54:16,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:54:16,704 INFO L479 AbstractCegarLoop]: Abstraction has 5260 states and 6313 transitions. [2020-09-24 21:54:16,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:54:16,704 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 6313 transitions. [2020-09-24 21:54:16,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-09-24 21:54:16,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:54:16,721 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] [2020-09-24 21:54:16,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:54:16,727 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:54:16,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:54:16,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1040451672, now seen corresponding path program 1 times [2020-09-24 21:54:16,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:54:16,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978748165] [2020-09-24 21:54:16,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:54:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:54:16,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:16,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:17,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:17,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:17,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:17,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:19,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:19,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:19,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:54:19,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking...