/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:10:54,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:10:54,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:10:54,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:10:54,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:10:54,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:10:54,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:10:54,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:10:54,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:10:54,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:10:54,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:10:54,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:10:54,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:10:54,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:10:54,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:10:54,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:10:54,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:10:54,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:10:54,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:10:54,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:10:54,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:10:54,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:10:54,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:10:54,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:10:54,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 15:10:54,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:10:54,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:10:54,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:10:54,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:10:54,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:10:54,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:10:54,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:10:54,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:10:54,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:10:54,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:10:54,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:10:54,412 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 15:10:54,458 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:10:54,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:10:54,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:10:54,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:10:54,461 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:10:54,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:10:54,462 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:10:54,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:10:54,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:10:54,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:10:54,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:10:54,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:10:54,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:10:54,464 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:10:54,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:10:54,465 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:10:54,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:10:54,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:10:54,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:10:54,466 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:10:54,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:10:54,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:10:54,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:10:54,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:10:54,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:10:54,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:10:54,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:10:54,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:10:54,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:10:54,468 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 -> false [2020-09-24 15:10:54,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:10:54,924 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:10:54,928 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:10:54,930 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:10:54,931 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:10:54,932 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-24 15:10:55,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6cd5560b9/8778060ca711474f9ed3174fe9e6f2c6/FLAGef95819fa [2020-09-24 15:10:55,707 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:10:55,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-24 15:10:55,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6cd5560b9/8778060ca711474f9ed3174fe9e6f2c6/FLAGef95819fa [2020-09-24 15:10:55,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6cd5560b9/8778060ca711474f9ed3174fe9e6f2c6 [2020-09-24 15:10:55,914 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:10:55,920 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:10:55,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:10:55,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:10:55,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:10:55,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:10:55" (1/1) ... [2020-09-24 15:10:55,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53afdaf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:55, skipping insertion in model container [2020-09-24 15:10:55,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:10:55" (1/1) ... [2020-09-24 15:10:55,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:10:56,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:10:56,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:10:56,717 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:10:57,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:10:57,290 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:10:57,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:57 WrapperNode [2020-09-24 15:10:57,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:10:57,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:10:57,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:10:57,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:10:57,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:57" (1/1) ... [2020-09-24 15:10:57,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:57" (1/1) ... [2020-09-24 15:10:57,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:57" (1/1) ... [2020-09-24 15:10:57,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:57" (1/1) ... [2020-09-24 15:10:57,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:57" (1/1) ... [2020-09-24 15:10:57,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:57" (1/1) ... [2020-09-24 15:10:57,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:57" (1/1) ... [2020-09-24 15:10:57,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:10:57,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:10:57,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:10:57,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:10:57,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:57" (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 15:10:57,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:10:57,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:10:57,630 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 15:10:57,630 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:10:57,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:10:57,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 15:10:57,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 15:10:57,631 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 15:10:57,631 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 15:10:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 15:10:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 15:10:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 15:10:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 15:10:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 15:10:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 15:10:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 15:10:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 15:10:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:10:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:10:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:10:59,816 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:10:59,816 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 15:10:59,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:10:59 BoogieIcfgContainer [2020-09-24 15:10:59,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:10:59,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:10:59,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:10:59,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:10:59,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:10:55" (1/3) ... [2020-09-24 15:10:59,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa8d517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:10:59, skipping insertion in model container [2020-09-24 15:10:59,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:57" (2/3) ... [2020-09-24 15:10:59,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa8d517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:10:59, skipping insertion in model container [2020-09-24 15:10:59,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:10:59" (3/3) ... [2020-09-24 15:10:59,846 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-09-24 15:10:59,858 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:10:59,874 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-09-24 15:10:59,897 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-24 15:10:59,930 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:10:59,931 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:10:59,931 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:10:59,931 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:10:59,931 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:10:59,931 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:10:59,931 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:10:59,931 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:10:59,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states. [2020-09-24 15:11:00,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-09-24 15:11:00,024 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:11:00,026 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] [2020-09-24 15:11:00,027 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:11:00,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:11:00,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1578062424, now seen corresponding path program 1 times [2020-09-24 15:11:00,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:11:00,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573219016] [2020-09-24 15:11:00,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:11:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:01,510 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-24 15:11:01,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:11:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:01,888 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 15:11:01,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573219016] [2020-09-24 15:11:01,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:11:01,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:11:01,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871520514] [2020-09-24 15:11:01,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:11:01,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:11:01,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:11:01,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:11:01,925 INFO L87 Difference]: Start difference. First operand 1237 states. Second operand 4 states. [2020-09-24 15:11:06,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:11:06,695 INFO L93 Difference]: Finished difference Result 2024 states and 2590 transitions. [2020-09-24 15:11:06,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 15:11:06,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 465 [2020-09-24 15:11:06,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:11:06,731 INFO L225 Difference]: With dead ends: 2024 [2020-09-24 15:11:06,731 INFO L226 Difference]: Without dead ends: 1455 [2020-09-24 15:11:06,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:11:06,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2020-09-24 15:11:06,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1448. [2020-09-24 15:11:06,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1448 states. [2020-09-24 15:11:06,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1727 transitions. [2020-09-24 15:11:06,881 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1727 transitions. Word has length 465 [2020-09-24 15:11:06,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:11:06,883 INFO L479 AbstractCegarLoop]: Abstraction has 1448 states and 1727 transitions. [2020-09-24 15:11:06,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:11:06,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1727 transitions. [2020-09-24 15:11:06,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-09-24 15:11:06,897 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:11:06,897 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] [2020-09-24 15:11:06,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:11:06,898 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:11:06,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:11:06,899 INFO L82 PathProgramCache]: Analyzing trace with hash 888544568, now seen corresponding path program 1 times [2020-09-24 15:11:06,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:11:06,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690246018] [2020-09-24 15:11:06,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:11:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:07,728 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-24 15:11:07,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:11:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:08,204 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 15:11:08,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690246018] [2020-09-24 15:11:08,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:11:08,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:11:08,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329651661] [2020-09-24 15:11:08,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:11:08,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:11:08,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:11:08,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:11:08,210 INFO L87 Difference]: Start difference. First operand 1448 states and 1727 transitions. Second operand 5 states. [2020-09-24 15:11:14,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:11:14,854 INFO L93 Difference]: Finished difference Result 3896 states and 4702 transitions. [2020-09-24 15:11:14,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:11:14,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 465 [2020-09-24 15:11:14,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:11:14,870 INFO L225 Difference]: With dead ends: 3896 [2020-09-24 15:11:14,870 INFO L226 Difference]: Without dead ends: 2640 [2020-09-24 15:11:14,873 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 15:11:14,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2020-09-24 15:11:14,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2513. [2020-09-24 15:11:14,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2513 states. [2020-09-24 15:11:14,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 3033 transitions. [2020-09-24 15:11:14,960 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 3033 transitions. Word has length 465 [2020-09-24 15:11:14,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:11:14,961 INFO L479 AbstractCegarLoop]: Abstraction has 2513 states and 3033 transitions. [2020-09-24 15:11:14,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:11:14,962 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 3033 transitions. [2020-09-24 15:11:14,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-09-24 15:11:14,968 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:11:14,969 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] [2020-09-24 15:11:14,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:11:14,969 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:11:14,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:11:14,970 INFO L82 PathProgramCache]: Analyzing trace with hash 481500190, now seen corresponding path program 1 times [2020-09-24 15:11:14,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:11:14,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038022802] [2020-09-24 15:11:14,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:11:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:15,431 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-24 15:11:15,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:11:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:15,671 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 15:11:15,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038022802] [2020-09-24 15:11:15,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:11:15,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:11:15,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473224625] [2020-09-24 15:11:15,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:11:15,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:11:15,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:11:15,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:11:15,675 INFO L87 Difference]: Start difference. First operand 2513 states and 3033 transitions. Second operand 4 states. [2020-09-24 15:11:20,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:11:20,490 INFO L93 Difference]: Finished difference Result 7118 states and 8654 transitions. [2020-09-24 15:11:20,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 15:11:20,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 466 [2020-09-24 15:11:20,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:11:20,513 INFO L225 Difference]: With dead ends: 7118 [2020-09-24 15:11:20,514 INFO L226 Difference]: Without dead ends: 4831 [2020-09-24 15:11:20,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:11:20,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4831 states. [2020-09-24 15:11:20,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4831 to 2515. [2020-09-24 15:11:20,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2515 states. [2020-09-24 15:11:20,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2515 states to 2515 states and 3035 transitions. [2020-09-24 15:11:20,630 INFO L78 Accepts]: Start accepts. Automaton has 2515 states and 3035 transitions. Word has length 466 [2020-09-24 15:11:20,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:11:20,630 INFO L479 AbstractCegarLoop]: Abstraction has 2515 states and 3035 transitions. [2020-09-24 15:11:20,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:11:20,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2515 states and 3035 transitions. [2020-09-24 15:11:20,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-09-24 15:11:20,637 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:11:20,638 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] [2020-09-24 15:11:20,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:11:20,638 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:11:20,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:11:20,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1054735442, now seen corresponding path program 1 times [2020-09-24 15:11:20,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:11:20,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369149347] [2020-09-24 15:11:20,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:11:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:21,348 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-24 15:11:21,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:11:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:21,672 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 15:11:21,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369149347] [2020-09-24 15:11:21,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:11:21,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:11:21,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780994180] [2020-09-24 15:11:21,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:11:21,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:11:21,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:11:21,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:11:21,675 INFO L87 Difference]: Start difference. First operand 2515 states and 3035 transitions. Second operand 5 states. [2020-09-24 15:11:27,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:11:27,941 INFO L93 Difference]: Finished difference Result 6969 states and 8451 transitions. [2020-09-24 15:11:27,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:11:27,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 467 [2020-09-24 15:11:27,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:11:27,963 INFO L225 Difference]: With dead ends: 6969 [2020-09-24 15:11:27,963 INFO L226 Difference]: Without dead ends: 4683 [2020-09-24 15:11:27,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:11:27,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4683 states. [2020-09-24 15:11:28,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4683 to 4556. [2020-09-24 15:11:28,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4556 states. [2020-09-24 15:11:28,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4556 states to 4556 states and 5513 transitions. [2020-09-24 15:11:28,112 INFO L78 Accepts]: Start accepts. Automaton has 4556 states and 5513 transitions. Word has length 467 [2020-09-24 15:11:28,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:11:28,113 INFO L479 AbstractCegarLoop]: Abstraction has 4556 states and 5513 transitions. [2020-09-24 15:11:28,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:11:28,113 INFO L276 IsEmpty]: Start isEmpty. Operand 4556 states and 5513 transitions. [2020-09-24 15:11:28,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-09-24 15:11:28,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:11:28,126 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] [2020-09-24 15:11:28,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:11:28,127 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:11:28,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:11:28,127 INFO L82 PathProgramCache]: Analyzing trace with hash 2011953776, now seen corresponding path program 1 times [2020-09-24 15:11:28,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:11:28,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644199047] [2020-09-24 15:11:28,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:11:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:28,549 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-24 15:11:28,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:11:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:28,741 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 15:11:28,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644199047] [2020-09-24 15:11:28,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:11:28,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:11:28,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123081681] [2020-09-24 15:11:28,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:11:28,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:11:28,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:11:28,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:11:28,744 INFO L87 Difference]: Start difference. First operand 4556 states and 5513 transitions. Second operand 4 states. [2020-09-24 15:11:33,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:11:33,560 INFO L93 Difference]: Finished difference Result 13184 states and 16011 transitions. [2020-09-24 15:11:33,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 15:11:33,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 468 [2020-09-24 15:11:33,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:11:33,601 INFO L225 Difference]: With dead ends: 13184 [2020-09-24 15:11:33,601 INFO L226 Difference]: Without dead ends: 8877 [2020-09-24 15:11:33,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:11:33,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8877 states. [2020-09-24 15:11:33,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8877 to 4560. [2020-09-24 15:11:33,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4560 states. [2020-09-24 15:11:33,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 5517 transitions. [2020-09-24 15:11:33,778 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 5517 transitions. Word has length 468 [2020-09-24 15:11:33,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:11:33,779 INFO L479 AbstractCegarLoop]: Abstraction has 4560 states and 5517 transitions. [2020-09-24 15:11:33,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:11:33,779 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 5517 transitions. [2020-09-24 15:11:33,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2020-09-24 15:11:33,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:11:33,790 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] [2020-09-24 15:11:33,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:11:33,790 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:11:33,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:11:33,791 INFO L82 PathProgramCache]: Analyzing trace with hash 120554772, now seen corresponding path program 1 times [2020-09-24 15:11:33,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:11:33,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055577510] [2020-09-24 15:11:33,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:11:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:34,388 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-24 15:11:34,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:11:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:34,717 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 15:11:34,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055577510] [2020-09-24 15:11:34,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:11:34,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:11:34,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326926673] [2020-09-24 15:11:34,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:11:34,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:11:34,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:11:34,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:11:34,721 INFO L87 Difference]: Start difference. First operand 4560 states and 5517 transitions. Second operand 5 states. [2020-09-24 15:11:41,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:11:41,487 INFO L93 Difference]: Finished difference Result 12037 states and 14582 transitions. [2020-09-24 15:11:41,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:11:41,488 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 469 [2020-09-24 15:11:41,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:11:41,536 INFO L225 Difference]: With dead ends: 12037 [2020-09-24 15:11:41,537 INFO L226 Difference]: Without dead ends: 7732 [2020-09-24 15:11:41,546 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 15:11:41,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7732 states. [2020-09-24 15:11:41,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7732 to 7605. [2020-09-24 15:11:41,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7605 states. [2020-09-24 15:11:41,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7605 states to 7605 states and 9168 transitions. [2020-09-24 15:11:41,843 INFO L78 Accepts]: Start accepts. Automaton has 7605 states and 9168 transitions. Word has length 469 [2020-09-24 15:11:41,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:11:41,844 INFO L479 AbstractCegarLoop]: Abstraction has 7605 states and 9168 transitions. [2020-09-24 15:11:41,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:11:41,844 INFO L276 IsEmpty]: Start isEmpty. Operand 7605 states and 9168 transitions. [2020-09-24 15:11:41,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-09-24 15:11:41,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:11:41,859 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] [2020-09-24 15:11:41,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 15:11:41,860 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:11:41,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:11:41,860 INFO L82 PathProgramCache]: Analyzing trace with hash -2145778150, now seen corresponding path program 1 times [2020-09-24 15:11:41,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:11:41,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122396558] [2020-09-24 15:11:41,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:11:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:42,324 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-24 15:11:42,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:11:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:11:42,545 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 15:11:42,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122396558] [2020-09-24 15:11:42,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:11:42,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:11:42,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887175238] [2020-09-24 15:11:42,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:11:42,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:11:42,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:11:42,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:11:42,549 INFO L87 Difference]: Start difference. First operand 7605 states and 9168 transitions. Second operand 4 states. [2020-09-24 15:11:47,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:11:47,340 INFO L93 Difference]: Finished difference Result 21817 states and 26360 transitions. [2020-09-24 15:11:47,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 15:11:47,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 470 [2020-09-24 15:11:47,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:11:47,368 INFO L225 Difference]: With dead ends: 21817 [2020-09-24 15:11:47,368 INFO L226 Difference]: Without dead ends: 14879 [2020-09-24 15:11:47,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:11:47,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14879 states. [2020-09-24 15:11:47,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14879 to 7613. [2020-09-24 15:11:47,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7613 states. [2020-09-24 15:11:47,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7613 states to 7613 states and 9176 transitions. [2020-09-24 15:11:47,642 INFO L78 Accepts]: Start accepts. Automaton has 7613 states and 9176 transitions. Word has length 470 [2020-09-24 15:11:47,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:11:47,643 INFO L479 AbstractCegarLoop]: Abstraction has 7613 states and 9176 transitions. [2020-09-24 15:11:47,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:11:47,643 INFO L276 IsEmpty]: Start isEmpty. Operand 7613 states and 9176 transitions. [2020-09-24 15:11:47,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2020-09-24 15:11:47,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:11:47,658 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] [2020-09-24 15:11:47,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 15:11:47,658 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:11:47,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:11:47,659 INFO L82 PathProgramCache]: Analyzing trace with hash 37669246, now seen corresponding path program 1 times [2020-09-24 15:11:47,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:11:47,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383814205] [2020-09-24 15:11:47,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:11:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 15:11:47,816 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 15:11:47,816 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 15:11:47,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 15:11:47,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:11:47 BoogieIcfgContainer [2020-09-24 15:11:47,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:11:47,938 INFO L168 Benchmark]: Toolchain (without parser) took 52016.11 ms. Allocated memory was 147.8 MB in the beginning and 934.8 MB in the end (delta: 787.0 MB). Free memory was 102.4 MB in the beginning and 513.8 MB in the end (delta: -411.4 MB). Peak memory consumption was 375.6 MB. Max. memory is 7.1 GB. [2020-09-24 15:11:47,939 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 15:11:47,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1368.73 ms. Allocated memory was 147.8 MB in the beginning and 206.0 MB in the end (delta: 58.2 MB). Free memory was 101.7 MB in the beginning and 162.9 MB in the end (delta: -61.2 MB). Peak memory consumption was 31.0 MB. Max. memory is 7.1 GB. [2020-09-24 15:11:47,941 INFO L168 Benchmark]: Boogie Preprocessor took 214.35 ms. Allocated memory is still 206.0 MB. Free memory was 162.9 MB in the beginning and 158.0 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-09-24 15:11:47,942 INFO L168 Benchmark]: RCFGBuilder took 2322.33 ms. Allocated memory was 206.0 MB in the beginning and 244.3 MB in the end (delta: 38.3 MB). Free memory was 158.0 MB in the beginning and 179.0 MB in the end (delta: -21.0 MB). Peak memory consumption was 102.9 MB. Max. memory is 7.1 GB. [2020-09-24 15:11:47,945 INFO L168 Benchmark]: TraceAbstraction took 48094.57 ms. Allocated memory was 244.3 MB in the beginning and 934.8 MB in the end (delta: 690.5 MB). Free memory was 177.2 MB in the beginning and 513.8 MB in the end (delta: -336.5 MB). Peak memory consumption was 354.0 MB. Max. memory is 7.1 GB. [2020-09-24 15:11:47,957 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1368.73 ms. Allocated memory was 147.8 MB in the beginning and 206.0 MB in the end (delta: 58.2 MB). Free memory was 101.7 MB in the beginning and 162.9 MB in the end (delta: -61.2 MB). Peak memory consumption was 31.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 214.35 ms. Allocated memory is still 206.0 MB. Free memory was 162.9 MB in the beginning and 158.0 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2322.33 ms. Allocated memory was 206.0 MB in the beginning and 244.3 MB in the end (delta: 38.3 MB). Free memory was 158.0 MB in the beginning and 179.0 MB in the end (delta: -21.0 MB). Peak memory consumption was 102.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 48094.57 ms. Allocated memory was 244.3 MB in the beginning and 934.8 MB in the end (delta: 690.5 MB). Free memory was 177.2 MB in the beginning and 513.8 MB in the end (delta: -336.5 MB). Peak memory consumption was 354.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 871]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L14] msg_t nomsg = (msg_t )-1; [L15] port_t p12 = 0; [L16] char p12_old = '\x0'; [L17] char p12_new = '\x0'; [L18] _Bool ep12 = 0; [L19] port_t p13 = 0; [L20] char p13_old = '\x0'; [L21] char p13_new = '\x0'; [L22] _Bool ep13 = 0; [L23] port_t p21 = 0; [L24] char p21_old = '\x0'; [L25] char p21_new = '\x0'; [L26] _Bool ep21 = 0; [L27] port_t p23 = 0; [L28] char p23_old = '\x0'; [L29] char p23_new = '\x0'; [L30] _Bool ep23 = 0; [L31] port_t p31 = 0; [L32] char p31_old = '\x0'; [L33] char p31_new = '\x0'; [L34] _Bool ep31 = 0; [L35] port_t p32 = 0; [L36] char p32_old = '\x0'; [L37] char p32_new = '\x0'; [L38] _Bool ep32 = 0; [L39] char id1 = '\x0'; [L40] char r1 = '\x0'; [L41] char st1 = '\x0'; [L42] char nl1 = '\x0'; [L43] char m1 = '\x0'; [L44] char max1 = '\x0'; [L45] _Bool mode1 = 0; [L46] _Bool newmax1 = 0; [L47] char id2 = '\x0'; [L48] char r2 = '\x0'; [L49] char st2 = '\x0'; [L50] char nl2 = '\x0'; [L51] char m2 = '\x0'; [L52] char max2 = '\x0'; [L53] _Bool mode2 = 0; [L54] _Bool newmax2 = 0; [L55] char id3 = '\x0'; [L56] char r3 = '\x0'; [L57] char st3 = '\x0'; [L58] char nl3 = '\x0'; [L59] char m3 = '\x0'; [L60] char max3 = '\x0'; [L61] _Bool mode3 = 0; [L62] _Bool newmax3 = 0; [L66] void (*nodes[3])() = { &node1, &node2, &node3 }; [L70] int __return_1863; [L71] int __return_2009; [L72] int __return_2142; [L73] int __return_2281; [L74] int __return_3069; [L75] int __return_3038; [L76] int __return_2975; [L77] int __return_2941; [L78] int __tmp_2420_0; [L79] int __return_2543; [L80] int __return_2433; [L81] int __return_2828; [L82] int __return_2794; [L83] int __return_2710; [L84] int __return_2419; [L87] int main__c1; [L88] int main__i2; [L89] main__c1 = 0 [L90] ep12 = __VERIFIER_nondet_bool() [L91] ep13 = __VERIFIER_nondet_bool() [L92] ep21 = __VERIFIER_nondet_bool() [L93] ep23 = __VERIFIER_nondet_bool() [L94] ep31 = __VERIFIER_nondet_bool() [L95] ep32 = __VERIFIER_nondet_bool() [L96] id1 = __VERIFIER_nondet_char() [L97] r1 = __VERIFIER_nondet_char() [L98] st1 = __VERIFIER_nondet_char() [L99] nl1 = __VERIFIER_nondet_char() [L100] m1 = __VERIFIER_nondet_char() [L101] max1 = __VERIFIER_nondet_char() [L102] mode1 = __VERIFIER_nondet_bool() [L103] newmax1 = __VERIFIER_nondet_bool() [L104] id2 = __VERIFIER_nondet_char() [L105] r2 = __VERIFIER_nondet_char() [L106] st2 = __VERIFIER_nondet_char() [L107] nl2 = __VERIFIER_nondet_char() [L108] m2 = __VERIFIER_nondet_char() [L109] max2 = __VERIFIER_nondet_char() [L110] mode2 = __VERIFIER_nondet_bool() [L111] newmax2 = __VERIFIER_nondet_bool() [L112] id3 = __VERIFIER_nondet_char() [L113] r3 = __VERIFIER_nondet_char() [L114] st3 = __VERIFIER_nondet_char() [L115] nl3 = __VERIFIER_nondet_char() [L116] m3 = __VERIFIER_nondet_char() [L117] max3 = __VERIFIER_nondet_char() [L118] mode3 = __VERIFIER_nondet_bool() [L119] newmax3 = __VERIFIER_nondet_bool() [L121] _Bool init__r121; [L122] _Bool init__r131; [L123] _Bool init__r211; [L124] _Bool init__r231; [L125] _Bool init__r311; [L126] _Bool init__r321; [L127] _Bool init__r122; [L128] int init__tmp; [L129] _Bool init__r132; [L130] int init__tmp___0; [L131] _Bool init__r212; [L132] int init__tmp___1; [L133] _Bool init__r232; [L134] int init__tmp___2; [L135] _Bool init__r312; [L136] int init__tmp___3; [L137] _Bool init__r322; [L138] int init__tmp___4; [L139] int init__tmp___5; [L140] init__r121 = ep12 [L141] init__r131 = ep13 [L142] init__r211 = ep21 [L143] init__r231 = ep23 [L144] init__r311 = ep31 [L145] init__r321 = ep32 [L146] COND FALSE !(!(init__r121 == 0)) [L3140] COND FALSE !(!(init__r131 == 0)) [L3156] init__tmp = 0 [L150] init__r122 = (_Bool)init__tmp [L151] COND FALSE !(!(init__r131 == 0)) [L3117] COND FALSE !(!(init__r121 == 0)) [L3133] init__tmp___0 = 0 [L155] init__r132 = (_Bool)init__tmp___0 [L156] COND FALSE !(!(init__r211 == 0)) [L3094] COND FALSE !(!(init__r231 == 0)) [L3110] init__tmp___1 = 0 [L160] init__r212 = (_Bool)init__tmp___1 [L161] COND FALSE !(!(init__r231 == 0)) [L3071] COND FALSE !(!(init__r211 == 0)) [L3087] init__tmp___2 = 0 [L165] init__r232 = (_Bool)init__tmp___2 [L166] COND FALSE !(!(init__r311 == 0)) [L3048] COND FALSE !(!(init__r321 == 0)) [L3064] init__tmp___3 = 0 [L170] init__r312 = (_Bool)init__tmp___3 [L171] COND FALSE !(!(init__r321 == 0)) [L3025] COND FALSE !(!(init__r311 == 0)) [L3041] init__tmp___4 = 0 [L175] init__r322 = (_Bool)init__tmp___4 [L176] COND TRUE ((int)id1) != ((int)id2) [L178] COND TRUE ((int)id1) != ((int)id3) [L180] COND TRUE ((int)id2) != ((int)id3) [L182] COND TRUE ((int)id1) >= 0 [L184] COND TRUE ((int)id2) >= 0 [L186] COND TRUE ((int)id3) >= 0 [L188] COND TRUE ((int)r1) == 0 [L190] COND TRUE ((int)r2) == 0 [L192] COND TRUE ((int)r3) == 0 [L194] COND TRUE ((int)max1) == ((int)id1) [L196] COND TRUE ((int)max2) == ((int)id2) [L198] COND TRUE ((int)max3) == ((int)id3) [L200] COND TRUE ((int)st1) == 0 [L202] COND TRUE ((int)st2) == 0 [L204] COND TRUE ((int)st3) == 0 [L206] COND TRUE ((int)nl1) == 0 [L208] COND TRUE ((int)nl2) == 0 [L210] COND TRUE ((int)nl3) == 0 [L212] COND TRUE ((int)mode1) == 0 [L214] COND TRUE ((int)mode2) == 0 [L216] COND TRUE ((int)mode3) == 0 [L218] COND TRUE !(newmax1 == 0) [L220] COND TRUE !(newmax2 == 0) [L222] COND TRUE !(newmax3 == 0) [L224] init__tmp___5 = 1 [L225] __return_1863 = init__tmp___5 [L226] main__i2 = __return_1863 [L227] COND TRUE main__i2 != 0 [L229] p12_old = nomsg [L230] p12_new = nomsg [L231] p13_old = nomsg [L232] p13_new = nomsg [L233] p21_old = nomsg [L234] p21_new = nomsg [L235] p23_old = nomsg [L236] p23_new = nomsg [L237] p31_old = nomsg [L238] p31_new = nomsg [L239] p32_old = nomsg [L240] p32_new = nomsg [L241] main__i2 = 0 [L242] COND TRUE main__i2 < 6 [L245] _Bool node1__newmax; [L246] node1__newmax = 0 [L247] COND FALSE !(!(mode1 == 0)) [L253] COND TRUE ((int)r1) < 2 [L255] COND FALSE !(!(ep12 == 0)) [L268] COND FALSE !(!(ep13 == 0)) [L281] mode1 = 1 [L283] _Bool node2__newmax; [L284] node2__newmax = 0 [L285] COND FALSE !(!(mode2 == 0)) [L291] COND TRUE ((int)r2) < 2 [L293] COND FALSE !(!(ep21 == 0)) [L306] COND FALSE !(!(ep23 == 0)) [L319] mode2 = 1 [L321] _Bool node3__newmax; [L322] node3__newmax = 0 [L323] COND FALSE !(!(mode3 == 0)) [L329] COND TRUE ((int)r3) < 2 [L331] COND FALSE !(!(ep31 == 0)) [L344] COND FALSE !(!(ep32 == 0)) [L357] mode3 = 1 [L358] p12_old = p12_new [L359] p12_new = nomsg [L360] p13_old = p13_new [L361] p13_new = nomsg [L362] p21_old = p21_new [L363] p21_new = nomsg [L364] p23_old = p23_new [L365] p23_new = nomsg [L366] p31_old = p31_new [L367] p31_new = nomsg [L368] p32_old = p32_new [L369] p32_new = nomsg [L371] int check__tmp; [L372] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L374] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L376] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L378] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L380] COND FALSE !(((int)r1) >= 2) [L386] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L388] COND TRUE ((int)r1) < 2 [L390] COND FALSE !(((int)r1) >= 2) [L396] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L398] COND TRUE ((int)r1) < 2 [L400] check__tmp = 1 [L401] __return_2009 = check__tmp [L402] main__c1 = __return_2009 [L404] _Bool __tmp_1; [L405] __tmp_1 = main__c1 [L406] _Bool assert__arg; [L407] assert__arg = __tmp_1 [L408] COND FALSE !(assert__arg == 0) [L414] int main____CPAchecker_TMP_0 = main__i2; [L415] main__i2 = main__i2 + 1 [L416] COND TRUE main__i2 < 6 [L419] _Bool node1__newmax; [L420] node1__newmax = 0 [L421] COND TRUE !(mode1 == 0) [L423] r1 = (char)(((int)r1) + 1) [L424] COND FALSE !(!(ep21 == 0)) [L433] COND FALSE !(!(ep31 == 0)) [L442] newmax1 = node1__newmax [L443] COND FALSE !(((int)r1) == 2) [L449] mode1 = 0 [L451] _Bool node2__newmax; [L452] node2__newmax = 0 [L453] COND TRUE !(mode2 == 0) [L455] r2 = (char)(((int)r2) + 1) [L456] COND FALSE !(!(ep12 == 0)) [L465] COND FALSE !(!(ep32 == 0)) [L474] newmax2 = node2__newmax [L475] COND FALSE !(((int)r2) == 2) [L481] mode2 = 0 [L483] _Bool node3__newmax; [L484] node3__newmax = 0 [L485] COND TRUE !(mode3 == 0) [L487] r3 = (char)(((int)r3) + 1) [L488] COND FALSE !(!(ep13 == 0)) [L497] COND FALSE !(!(ep23 == 0)) [L506] newmax3 = node3__newmax [L507] COND FALSE !(((int)r3) == 2) [L513] mode3 = 0 [L514] p12_old = p12_new [L515] p12_new = nomsg [L516] p13_old = p13_new [L517] p13_new = nomsg [L518] p21_old = p21_new [L519] p21_new = nomsg [L520] p23_old = p23_new [L521] p23_new = nomsg [L522] p31_old = p31_new [L523] p31_new = nomsg [L524] p32_old = p32_new [L525] p32_new = nomsg [L527] int check__tmp; [L528] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L530] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L532] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L534] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L536] COND FALSE !(((int)r1) >= 2) [L542] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L544] COND TRUE ((int)r1) < 2 [L546] COND FALSE !(((int)r1) >= 2) [L552] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L554] COND TRUE ((int)r1) < 2 [L556] check__tmp = 1 [L557] __return_2142 = check__tmp [L558] main__c1 = __return_2142 [L560] _Bool __tmp_2; [L561] __tmp_2 = main__c1 [L562] _Bool assert__arg; [L563] assert__arg = __tmp_2 [L564] COND FALSE !(assert__arg == 0) [L570] int main____CPAchecker_TMP_0 = main__i2; [L571] main__i2 = main__i2 + 1 [L572] COND TRUE main__i2 < 6 [L575] _Bool node1__newmax; [L576] node1__newmax = 0 [L577] COND FALSE !(!(mode1 == 0)) [L583] COND TRUE ((int)r1) < 2 [L585] COND FALSE !(!(ep12 == 0)) [L598] COND FALSE !(!(ep13 == 0)) [L611] mode1 = 1 [L613] _Bool node2__newmax; [L614] node2__newmax = 0 [L615] COND FALSE !(!(mode2 == 0)) [L621] COND TRUE ((int)r2) < 2 [L623] COND FALSE !(!(ep21 == 0)) [L636] COND FALSE !(!(ep23 == 0)) [L649] mode2 = 1 [L651] _Bool node3__newmax; [L652] node3__newmax = 0 [L653] COND FALSE !(!(mode3 == 0)) [L659] COND TRUE ((int)r3) < 2 [L661] COND FALSE !(!(ep31 == 0)) [L674] COND FALSE !(!(ep32 == 0)) [L687] mode3 = 1 [L688] p12_old = p12_new [L689] p12_new = nomsg [L690] p13_old = p13_new [L691] p13_new = nomsg [L692] p21_old = p21_new [L693] p21_new = nomsg [L694] p23_old = p23_new [L695] p23_new = nomsg [L696] p31_old = p31_new [L697] p31_new = nomsg [L698] p32_old = p32_new [L699] p32_new = nomsg [L701] int check__tmp; [L702] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L704] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L706] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L708] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L710] COND FALSE !(((int)r1) >= 2) [L716] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L718] COND TRUE ((int)r1) < 2 [L720] COND FALSE !(((int)r1) >= 2) [L726] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L728] COND TRUE ((int)r1) < 2 [L730] check__tmp = 1 [L731] __return_2281 = check__tmp [L732] main__c1 = __return_2281 [L734] _Bool __tmp_3; [L735] __tmp_3 = main__c1 [L736] _Bool assert__arg; [L737] assert__arg = __tmp_3 [L738] COND FALSE !(assert__arg == 0) [L744] int main____CPAchecker_TMP_0 = main__i2; [L745] main__i2 = main__i2 + 1 [L746] COND TRUE main__i2 < 6 [L749] _Bool node1__newmax; [L750] node1__newmax = 0 [L751] COND TRUE !(mode1 == 0) [L753] r1 = (char)(((int)r1) + 1) [L754] COND FALSE !(!(ep21 == 0)) [L763] COND FALSE !(!(ep31 == 0)) [L772] newmax1 = node1__newmax [L773] COND TRUE ((int)r1) == 2 [L775] COND TRUE ((int)max1) == ((int)id1) [L777] st1 = 1 [L778] mode1 = 0 [L780] _Bool node2__newmax; [L781] node2__newmax = 0 [L782] COND TRUE !(mode2 == 0) [L784] r2 = (char)(((int)r2) + 1) [L785] COND FALSE !(!(ep12 == 0)) [L794] COND FALSE !(!(ep32 == 0)) [L803] newmax2 = node2__newmax [L804] COND TRUE ((int)r2) == 2 [L806] COND TRUE ((int)max2) == ((int)id2) [L808] st2 = 1 [L809] mode2 = 0 [L811] _Bool node3__newmax; [L812] node3__newmax = 0 [L813] COND TRUE !(mode3 == 0) [L815] r3 = (char)(((int)r3) + 1) [L816] COND FALSE !(!(ep13 == 0)) [L825] COND FALSE !(!(ep23 == 0)) [L834] newmax3 = node3__newmax [L835] COND TRUE ((int)r3) == 2 [L837] COND TRUE ((int)max3) == ((int)id3) [L839] st3 = 1 [L840] mode3 = 0 [L841] p12_old = p12_new [L842] p12_new = nomsg [L843] p13_old = p13_new [L844] p13_new = nomsg [L845] p21_old = p21_new [L846] p21_new = nomsg [L847] p23_old = p23_new [L848] p23_new = nomsg [L849] p31_old = p31_new [L850] p31_new = nomsg [L851] p32_old = p32_new [L852] p32_new = nomsg [L854] int check__tmp; [L855] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L861] check__tmp = 0 [L862] __return_3069 = check__tmp [L863] main__c1 = __return_3069 [L865] _Bool __tmp_4; [L866] __tmp_4 = main__c1 [L867] _Bool assert__arg; [L868] assert__arg = __tmp_4 [L869] COND TRUE assert__arg == 0 [L871] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 1242 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 47.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 39.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12020 SDtfs, 10971 SDslu, 8916 SDs, 0 SdLazy, 12317 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 31.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7613occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 14287 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 3741 NumberOfCodeBlocks, 3741 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 3263 ConstructedInterpolants, 0 QuantifiedInterpolants, 3159456 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...