/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:58:59,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:58:59,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:58:59,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:58:59,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:58:59,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:58:59,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:58:59,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:58:59,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:58:59,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:58:59,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:59:00,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:59:00,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:59:00,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:59:00,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:59:00,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:59:00,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:59:00,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:59:00,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:59:00,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:59:00,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:59:00,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:59:00,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:59:00,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:59:00,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:59:00,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:59:00,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:59:00,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:59:00,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:59:00,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-19 06:59:00,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:59:00,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:59:00,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:59:00,054 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 [2020-08-19 06:59:00,092 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:59:00,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:59:00,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:59:00,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:59:00,095 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:59:00,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:59:00,095 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:59:00,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:59:00,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:59:00,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:59:00,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:59:00,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:59:00,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:59:00,098 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:59:00,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:59:00,098 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:59:00,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:59:00,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:59:00,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:59:00,099 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:59:00,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:59:00,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:59:00,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:59:00,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:59:00,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:59:00,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:59:00,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:59:00,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:59:00,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:59:00,101 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:59:00,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:59:00,419 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:59:00,423 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:59:00,425 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:59:00,425 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:59:00,426 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-08-19 06:59:00,489 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af1f14f00/98dcb5fe6033421c87a57d2a0ed9f7cb/FLAGb71b2b6eb [2020-08-19 06:59:01,161 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:59:01,162 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-08-19 06:59:01,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af1f14f00/98dcb5fe6033421c87a57d2a0ed9f7cb/FLAGb71b2b6eb [2020-08-19 06:59:01,318 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af1f14f00/98dcb5fe6033421c87a57d2a0ed9f7cb [2020-08-19 06:59:01,327 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:59:01,329 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:59:01,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:59:01,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:59:01,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:59:01,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:59:01" (1/1) ... [2020-08-19 06:59:01,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57f9529c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:59:01, skipping insertion in model container [2020-08-19 06:59:01,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:59:01" (1/1) ... [2020-08-19 06:59:01,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:59:01,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:59:03,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:59:03,686 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:59:05,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:59:05,469 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:59:05,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:59:05 WrapperNode [2020-08-19 06:59:05,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:59:05,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:59:05,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:59:05,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:59:05,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:59:05" (1/1) ... [2020-08-19 06:59:05,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:59:05" (1/1) ... [2020-08-19 06:59:05,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:59:05" (1/1) ... [2020-08-19 06:59:05,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:59:05" (1/1) ... [2020-08-19 06:59:05,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:59:05" (1/1) ... [2020-08-19 06:59:05,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:59:05" (1/1) ... [2020-08-19 06:59:05,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:59:05" (1/1) ... [2020-08-19 06:59:05,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:59:05,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:59:05,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:59:05,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:59:05,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:59:05" (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 [2020-08-19 06:59:05,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:59:05,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:59:05,820 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 06:59:05,821 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:59:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:59:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-19 06:59:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-19 06:59:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-19 06:59:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 06:59:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 06:59:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-19 06:59:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-19 06:59:05,824 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-19 06:59:05,824 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-19 06:59:05,824 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-19 06:59:05,825 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-08-19 06:59:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-08-19 06:59:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-19 06:59:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-19 06:59:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:59:05,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:59:05,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:59:12,329 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:59:12,329 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 06:59:12,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:59:12 BoogieIcfgContainer [2020-08-19 06:59:12,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:59:12,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:59:12,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:59:12,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:59:12,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:59:01" (1/3) ... [2020-08-19 06:59:12,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6913c547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:59:12, skipping insertion in model container [2020-08-19 06:59:12,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:59:05" (2/3) ... [2020-08-19 06:59:12,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6913c547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:59:12, skipping insertion in model container [2020-08-19 06:59:12,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:59:12" (3/3) ... [2020-08-19 06:59:12,358 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-08-19 06:59:12,369 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:59:12,382 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-08-19 06:59:12,396 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-08-19 06:59:12,428 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:59:12,428 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:59:12,428 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:59:12,428 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:59:12,429 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:59:12,429 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:59:12,429 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:59:12,429 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:59:12,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states. [2020-08-19 06:59:12,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-08-19 06:59:12,512 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:59:12,514 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] [2020-08-19 06:59:12,514 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:59:12,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:59:12,521 INFO L82 PathProgramCache]: Analyzing trace with hash -2040294362, now seen corresponding path program 1 times [2020-08-19 06:59:12,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:59:12,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446382367] [2020-08-19 06:59:12,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:59:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:59:14,599 WARN L193 SmtUtils]: Spent 994.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-08-19 06:59:14,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:59:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:59:14,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:59:14,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446382367] [2020-08-19 06:59:14,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:59:14,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:59:14,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995178854] [2020-08-19 06:59:14,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:59:14,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:59:14,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:59:14,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:59:14,776 INFO L87 Difference]: Start difference. First operand 2249 states. Second operand 5 states. [2020-08-19 06:59:30,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:59:30,450 INFO L93 Difference]: Finished difference Result 3956 states and 6884 transitions. [2020-08-19 06:59:30,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 06:59:30,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 290 [2020-08-19 06:59:30,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:59:30,496 INFO L225 Difference]: With dead ends: 3956 [2020-08-19 06:59:30,496 INFO L226 Difference]: Without dead ends: 2245 [2020-08-19 06:59:30,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:59:30,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2020-08-19 06:59:30,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 2245. [2020-08-19 06:59:30,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2245 states. [2020-08-19 06:59:30,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2245 states to 2245 states and 3871 transitions. [2020-08-19 06:59:30,697 INFO L78 Accepts]: Start accepts. Automaton has 2245 states and 3871 transitions. Word has length 290 [2020-08-19 06:59:30,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:59:30,698 INFO L479 AbstractCegarLoop]: Abstraction has 2245 states and 3871 transitions. [2020-08-19 06:59:30,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:59:30,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2245 states and 3871 transitions. [2020-08-19 06:59:30,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-08-19 06:59:30,707 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:59:30,707 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] [2020-08-19 06:59:30,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:59:30,708 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:59:30,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:59:30,708 INFO L82 PathProgramCache]: Analyzing trace with hash -875879150, now seen corresponding path program 1 times [2020-08-19 06:59:30,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:59:30,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710425247] [2020-08-19 06:59:30,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:59:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:59:32,011 WARN L193 SmtUtils]: Spent 989.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-08-19 06:59:32,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:59:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:59:32,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:59:32,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710425247] [2020-08-19 06:59:32,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:59:32,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:59:32,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420540948] [2020-08-19 06:59:32,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:59:32,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:59:32,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:59:32,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:59:32,167 INFO L87 Difference]: Start difference. First operand 2245 states and 3871 transitions. Second operand 4 states. [2020-08-19 06:59:33,141 WARN L193 SmtUtils]: Spent 910.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-08-19 06:59:57,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:59:57,781 INFO L93 Difference]: Finished difference Result 5464 states and 9356 transitions. [2020-08-19 06:59:57,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:59:57,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 349 [2020-08-19 06:59:57,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:59:57,808 INFO L225 Difference]: With dead ends: 5464 [2020-08-19 06:59:57,808 INFO L226 Difference]: Without dead ends: 3801 [2020-08-19 06:59:57,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:59:57,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3801 states. [2020-08-19 06:59:57,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3801 to 3797. [2020-08-19 06:59:57,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3797 states. [2020-08-19 06:59:57,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3797 states to 3797 states and 6464 transitions. [2020-08-19 06:59:57,922 INFO L78 Accepts]: Start accepts. Automaton has 3797 states and 6464 transitions. Word has length 349 [2020-08-19 06:59:57,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:59:57,923 INFO L479 AbstractCegarLoop]: Abstraction has 3797 states and 6464 transitions. [2020-08-19 06:59:57,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:59:57,923 INFO L276 IsEmpty]: Start isEmpty. Operand 3797 states and 6464 transitions. [2020-08-19 06:59:57,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-08-19 06:59:57,935 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:59:57,935 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] [2020-08-19 06:59:57,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:59:57,936 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:59:57,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:59:57,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1287553668, now seen corresponding path program 1 times [2020-08-19 06:59:57,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:59:57,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795487343] [2020-08-19 06:59:57,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:59:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:59:59,123 WARN L193 SmtUtils]: Spent 883.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-08-19 06:59:59,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:59:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:59:59,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:59:59,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795487343] [2020-08-19 06:59:59,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:59:59,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:59:59,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991004853] [2020-08-19 06:59:59,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:59:59,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:59:59,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:59:59,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:59:59,259 INFO L87 Difference]: Start difference. First operand 3797 states and 6464 transitions. Second operand 4 states. [2020-08-19 07:00:00,301 WARN L193 SmtUtils]: Spent 987.00 ms on a formula simplification that was a NOOP. DAG size: 398