/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=SMALLEST -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+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 12:18:47,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:18:47,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:18:47,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:18:47,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:18:47,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:18:47,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:18:47,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:18:47,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:18:47,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:18:47,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:18:47,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:18:47,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:18:47,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:18:47,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:18:47,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:18:47,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:18:47,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:18:47,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:18:47,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:18:47,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:18:47,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:18:47,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:18:47,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:18:47,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 12:18:47,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:18:47,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:18:47,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:18:47,087 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 [2020-08-18 12:18:47,134 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:18:47,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:18:47,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:18:47,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:18:47,139 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:18:47,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:18:47,139 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 12:18:47,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:18:47,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 12:18:47,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:18:47,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:18:47,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:18:47,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:18:47,141 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 12:18:47,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:18:47,141 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:18:47,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:18:47,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:18:47,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:18:47,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:18:47,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:18:47,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:18:47,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:18:47,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:18:47,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:18:47,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:18:47,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:18:47,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:18:47,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:18:47,146 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 12:18:47,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:18:47,475 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:18:47,478 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:18:47,480 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:18:47,482 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:18:47,483 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-08-18 12:18:47,547 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6590fa2c8/9c5bb9935e9b4679bda3420012da6fc3/FLAGc1afad662 [2020-08-18 12:18:48,061 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:18:48,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-08-18 12:18:48,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6590fa2c8/9c5bb9935e9b4679bda3420012da6fc3/FLAGc1afad662 [2020-08-18 12:18:48,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6590fa2c8/9c5bb9935e9b4679bda3420012da6fc3 [2020-08-18 12:18:48,406 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:18:48,409 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:18:48,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:18:48,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:18:48,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:18:48,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:18:48" (1/1) ... [2020-08-18 12:18:48,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf2a9e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:18:48, skipping insertion in model container [2020-08-18 12:18:48,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:18:48" (1/1) ... [2020-08-18 12:18:48,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:18:48,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:18:49,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:18:49,033 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:18:49,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:18:49,240 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:18:49,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:18:49 WrapperNode [2020-08-18 12:18:49,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:18:49,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:18:49,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:18:49,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:18:49,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:18:49" (1/1) ... [2020-08-18 12:18:49,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:18:49" (1/1) ... [2020-08-18 12:18:49,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:18:49" (1/1) ... [2020-08-18 12:18:49,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:18:49" (1/1) ... [2020-08-18 12:18:49,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:18:49" (1/1) ... [2020-08-18 12:18:49,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:18:49" (1/1) ... [2020-08-18 12:18:49,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:18:49" (1/1) ... [2020-08-18 12:18:49,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:18:49,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:18:49,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:18:49,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:18:49,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:18:49" (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 [2020-08-18 12:18:49,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:18:49,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:18:49,441 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 12:18:49,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:18:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:18:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-18 12:18:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 12:18:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-18 12:18:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 12:18:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 12:18:49,444 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-18 12:18:49,444 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-18 12:18:49,444 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-18 12:18:49,445 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-18 12:18:49,445 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-18 12:18:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-18 12:18:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-18 12:18:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:18:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:18:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:18:50,816 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:18:50,817 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 12:18:50,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:18:50 BoogieIcfgContainer [2020-08-18 12:18:50,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:18:50,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:18:50,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:18:50,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:18:50,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:18:48" (1/3) ... [2020-08-18 12:18:50,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d7c11b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:18:50, skipping insertion in model container [2020-08-18 12:18:50,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:18:49" (2/3) ... [2020-08-18 12:18:50,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d7c11b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:18:50, skipping insertion in model container [2020-08-18 12:18:50,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:18:50" (3/3) ... [2020-08-18 12:18:50,833 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-08-18 12:18:50,843 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:18:50,851 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 12:18:50,865 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 12:18:50,891 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:18:50,891 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:18:50,892 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:18:50,892 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:18:50,892 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:18:50,892 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:18:50,892 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:18:50,893 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:18:50,916 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states. [2020-08-18 12:18:50,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-18 12:18:50,932 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:18:50,933 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] [2020-08-18 12:18:50,934 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:18:50,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:18:50,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1777408137, now seen corresponding path program 1 times [2020-08-18 12:18:50,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:18:50,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945504052] [2020-08-18 12:18:50,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:18:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:51,909 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-08-18 12:18:51,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:18:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:51,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:18:51,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945504052] [2020-08-18 12:18:51,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:18:51,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 12:18:51,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031668848] [2020-08-18 12:18:51,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 12:18:51,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:18:52,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 12:18:52,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:18:52,017 INFO L87 Difference]: Start difference. First operand 336 states. Second operand 4 states. [2020-08-18 12:18:52,376 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-08-18 12:18:54,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:18:54,309 INFO L93 Difference]: Finished difference Result 649 states and 1122 transitions. [2020-08-18 12:18:54,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 12:18:54,312 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-08-18 12:18:54,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:18:54,353 INFO L225 Difference]: With dead ends: 649 [2020-08-18 12:18:54,353 INFO L226 Difference]: Without dead ends: 534 [2020-08-18 12:18:54,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:18:54,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-08-18 12:18:54,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2020-08-18 12:18:54,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2020-08-18 12:18:54,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 797 transitions. [2020-08-18 12:18:54,512 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 797 transitions. Word has length 151 [2020-08-18 12:18:54,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:18:54,515 INFO L479 AbstractCegarLoop]: Abstraction has 532 states and 797 transitions. [2020-08-18 12:18:54,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 12:18:54,515 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 797 transitions. [2020-08-18 12:18:54,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-18 12:18:54,526 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:18:54,527 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] [2020-08-18 12:18:54,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:18:54,528 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:18:54,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:18:54,528 INFO L82 PathProgramCache]: Analyzing trace with hash 623105739, now seen corresponding path program 1 times [2020-08-18 12:18:54,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:18:54,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758398331] [2020-08-18 12:18:54,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:18:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:55,148 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-08-18 12:18:55,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:18:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:55,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:18:55,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758398331] [2020-08-18 12:18:55,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:18:55,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:18:55,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146396632] [2020-08-18 12:18:55,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:18:55,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:18:55,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:18:55,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:18:55,274 INFO L87 Difference]: Start difference. First operand 532 states and 797 transitions. Second operand 5 states. [2020-08-18 12:18:58,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:18:58,123 INFO L93 Difference]: Finished difference Result 1543 states and 2308 transitions. [2020-08-18 12:18:58,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 12:18:58,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-08-18 12:18:58,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:18:58,138 INFO L225 Difference]: With dead ends: 1543 [2020-08-18 12:18:58,138 INFO L226 Difference]: Without dead ends: 1024 [2020-08-18 12:18:58,142 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 [2020-08-18 12:18:58,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-08-18 12:18:58,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1022. [2020-08-18 12:18:58,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1022 states. [2020-08-18 12:18:58,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1517 transitions. [2020-08-18 12:18:58,218 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1517 transitions. Word has length 151 [2020-08-18 12:18:58,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:18:58,219 INFO L479 AbstractCegarLoop]: Abstraction has 1022 states and 1517 transitions. [2020-08-18 12:18:58,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:18:58,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1517 transitions. [2020-08-18 12:18:58,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 12:18:58,224 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:18:58,224 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] [2020-08-18 12:18:58,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:18:58,225 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:18:58,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:18:58,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1496630273, now seen corresponding path program 1 times [2020-08-18 12:18:58,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:18:58,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935705937] [2020-08-18 12:18:58,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:18:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:58,532 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-08-18 12:18:58,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:18:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:18:58,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:18:58,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935705937] [2020-08-18 12:18:58,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:18:58,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 12:18:58,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510540050] [2020-08-18 12:18:58,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 12:18:58,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:18:58,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 12:18:58,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:18:58,572 INFO L87 Difference]: Start difference. First operand 1022 states and 1517 transitions. Second operand 4 states. [2020-08-18 12:19:00,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:19:00,605 INFO L93 Difference]: Finished difference Result 3020 states and 4481 transitions. [2020-08-18 12:19:00,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 12:19:00,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-08-18 12:19:00,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:19:00,628 INFO L225 Difference]: With dead ends: 3020 [2020-08-18 12:19:00,628 INFO L226 Difference]: Without dead ends: 2030 [2020-08-18 12:19:00,634 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 [2020-08-18 12:19:00,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2020-08-18 12:19:00,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 1024. [2020-08-18 12:19:00,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-08-18 12:19:00,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1519 transitions. [2020-08-18 12:19:00,724 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1519 transitions. Word has length 152 [2020-08-18 12:19:00,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:19:00,724 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 1519 transitions. [2020-08-18 12:19:00,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 12:19:00,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1519 transitions. [2020-08-18 12:19:00,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-18 12:19:00,728 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:19:00,728 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] [2020-08-18 12:19:00,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 12:19:00,729 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:19:00,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:19:00,729 INFO L82 PathProgramCache]: Analyzing trace with hash -263532694, now seen corresponding path program 1 times [2020-08-18 12:19:00,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:19:00,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613470087] [2020-08-18 12:19:00,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:19:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:01,190 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-08-18 12:19:01,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:19:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:01,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:19:01,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613470087] [2020-08-18 12:19:01,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:19:01,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:19:01,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718959851] [2020-08-18 12:19:01,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:19:01,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:19:01,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:19:01,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:19:01,256 INFO L87 Difference]: Start difference. First operand 1024 states and 1519 transitions. Second operand 5 states. [2020-08-18 12:19:04,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:19:04,235 INFO L93 Difference]: Finished difference Result 2950 states and 4361 transitions. [2020-08-18 12:19:04,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 12:19:04,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-08-18 12:19:04,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:19:04,249 INFO L225 Difference]: With dead ends: 2950 [2020-08-18 12:19:04,249 INFO L226 Difference]: Without dead ends: 1960 [2020-08-18 12:19:04,252 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 [2020-08-18 12:19:04,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2020-08-18 12:19:04,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1958. [2020-08-18 12:19:04,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1958 states. [2020-08-18 12:19:04,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2870 transitions. [2020-08-18 12:19:04,377 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2870 transitions. Word has length 153 [2020-08-18 12:19:04,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:19:04,378 INFO L479 AbstractCegarLoop]: Abstraction has 1958 states and 2870 transitions. [2020-08-18 12:19:04,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:19:04,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2870 transitions. [2020-08-18 12:19:04,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 12:19:04,382 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:19:04,382 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] [2020-08-18 12:19:04,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 12:19:04,383 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:19:04,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:19:04,384 INFO L82 PathProgramCache]: Analyzing trace with hash -919312578, now seen corresponding path program 1 times [2020-08-18 12:19:04,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:19:04,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627870224] [2020-08-18 12:19:04,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:19:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:04,727 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-08-18 12:19:04,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:19:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:04,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:19:04,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627870224] [2020-08-18 12:19:04,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:19:04,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 12:19:04,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466098452] [2020-08-18 12:19:04,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 12:19:04,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:19:04,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 12:19:04,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:19:04,836 INFO L87 Difference]: Start difference. First operand 1958 states and 2870 transitions. Second operand 4 states. [2020-08-18 12:19:08,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:19:08,177 INFO L93 Difference]: Finished difference Result 5790 states and 8482 transitions. [2020-08-18 12:19:08,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 12:19:08,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-08-18 12:19:08,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:19:08,199 INFO L225 Difference]: With dead ends: 5790 [2020-08-18 12:19:08,199 INFO L226 Difference]: Without dead ends: 3880 [2020-08-18 12:19:08,204 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 [2020-08-18 12:19:08,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3880 states. [2020-08-18 12:19:08,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3880 to 1962. [2020-08-18 12:19:08,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1962 states. [2020-08-18 12:19:08,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2874 transitions. [2020-08-18 12:19:08,366 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2874 transitions. Word has length 154 [2020-08-18 12:19:08,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:19:08,368 INFO L479 AbstractCegarLoop]: Abstraction has 1962 states and 2874 transitions. [2020-08-18 12:19:08,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 12:19:08,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2874 transitions. [2020-08-18 12:19:08,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-18 12:19:08,372 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:19:08,373 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] [2020-08-18 12:19:08,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 12:19:08,373 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:19:08,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:19:08,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1585428376, now seen corresponding path program 1 times [2020-08-18 12:19:08,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:19:08,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462356229] [2020-08-18 12:19:08,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:19:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:08,738 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-08-18 12:19:08,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:19:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:08,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:19:08,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462356229] [2020-08-18 12:19:08,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:19:08,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 12:19:08,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135763265] [2020-08-18 12:19:08,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 12:19:08,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:19:08,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 12:19:08,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:19:08,825 INFO L87 Difference]: Start difference. First operand 1962 states and 2874 transitions. Second operand 4 states. [2020-08-18 12:19:11,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:19:11,641 INFO L93 Difference]: Finished difference Result 5414 states and 7950 transitions. [2020-08-18 12:19:11,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 12:19:11,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-08-18 12:19:11,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:19:11,661 INFO L225 Difference]: With dead ends: 5414 [2020-08-18 12:19:11,661 INFO L226 Difference]: Without dead ends: 3768 [2020-08-18 12:19:11,665 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 [2020-08-18 12:19:11,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2020-08-18 12:19:11,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3766. [2020-08-18 12:19:11,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3766 states. [2020-08-18 12:19:11,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 5456 transitions. [2020-08-18 12:19:11,890 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 5456 transitions. Word has length 155 [2020-08-18 12:19:11,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:19:11,891 INFO L479 AbstractCegarLoop]: Abstraction has 3766 states and 5456 transitions. [2020-08-18 12:19:11,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 12:19:11,891 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 5456 transitions. [2020-08-18 12:19:11,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-18 12:19:11,897 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:19:11,897 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] [2020-08-18 12:19:11,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 12:19:11,899 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:19:11,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:19:11,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1351457563, now seen corresponding path program 1 times [2020-08-18 12:19:11,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:19:11,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365061023] [2020-08-18 12:19:11,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:19:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:12,270 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-08-18 12:19:12,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:19:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:12,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:19:12,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365061023] [2020-08-18 12:19:12,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:19:12,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:19:12,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564634167] [2020-08-18 12:19:12,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:19:12,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:19:12,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:19:12,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:19:12,320 INFO L87 Difference]: Start difference. First operand 3766 states and 5456 transitions. Second operand 5 states. [2020-08-18 12:19:14,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:19:14,194 INFO L93 Difference]: Finished difference Result 7914 states and 11362 transitions. [2020-08-18 12:19:14,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 12:19:14,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-08-18 12:19:14,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:19:14,215 INFO L225 Difference]: With dead ends: 7914 [2020-08-18 12:19:14,215 INFO L226 Difference]: Without dead ends: 4004 [2020-08-18 12:19:14,223 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 [2020-08-18 12:19:14,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4004 states. [2020-08-18 12:19:14,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4004 to 4002. [2020-08-18 12:19:14,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4002 states. [2020-08-18 12:19:14,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4002 states to 4002 states and 5698 transitions. [2020-08-18 12:19:14,461 INFO L78 Accepts]: Start accepts. Automaton has 4002 states and 5698 transitions. Word has length 155 [2020-08-18 12:19:14,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:19:14,462 INFO L479 AbstractCegarLoop]: Abstraction has 4002 states and 5698 transitions. [2020-08-18 12:19:14,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:19:14,462 INFO L276 IsEmpty]: Start isEmpty. Operand 4002 states and 5698 transitions. [2020-08-18 12:19:14,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-18 12:19:14,472 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:19:14,472 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] [2020-08-18 12:19:14,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 12:19:14,473 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:19:14,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:19:14,473 INFO L82 PathProgramCache]: Analyzing trace with hash 557114249, now seen corresponding path program 1 times [2020-08-18 12:19:14,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:19:14,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319323705] [2020-08-18 12:19:14,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:19:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:14,841 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-08-18 12:19:14,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:19:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:14,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:19:14,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319323705] [2020-08-18 12:19:14,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:19:14,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:19:14,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526269906] [2020-08-18 12:19:14,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:19:14,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:19:14,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:19:14,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:19:14,901 INFO L87 Difference]: Start difference. First operand 4002 states and 5698 transitions. Second operand 5 states. [2020-08-18 12:19:17,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:19:17,323 INFO L93 Difference]: Finished difference Result 5770 states and 8216 transitions. [2020-08-18 12:19:17,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 12:19:17,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-08-18 12:19:17,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:19:17,343 INFO L225 Difference]: With dead ends: 5770 [2020-08-18 12:19:17,343 INFO L226 Difference]: Without dead ends: 4004 [2020-08-18 12:19:17,348 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 [2020-08-18 12:19:17,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4004 states. [2020-08-18 12:19:17,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4004 to 3766. [2020-08-18 12:19:17,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3766 states. [2020-08-18 12:19:17,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 5400 transitions. [2020-08-18 12:19:17,580 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 5400 transitions. Word has length 155 [2020-08-18 12:19:17,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:19:17,580 INFO L479 AbstractCegarLoop]: Abstraction has 3766 states and 5400 transitions. [2020-08-18 12:19:17,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:19:17,580 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 5400 transitions. [2020-08-18 12:19:17,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-18 12:19:17,587 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:19:17,587 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] [2020-08-18 12:19:17,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 12:19:17,588 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:19:17,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:19:17,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1983484075, now seen corresponding path program 1 times [2020-08-18 12:19:17,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:19:17,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110757132] [2020-08-18 12:19:17,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:19:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:17,837 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-08-18 12:19:17,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:19:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:17,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:19:17,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110757132] [2020-08-18 12:19:17,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:19:17,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 12:19:17,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808571130] [2020-08-18 12:19:17,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 12:19:17,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:19:17,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 12:19:17,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:19:17,875 INFO L87 Difference]: Start difference. First operand 3766 states and 5400 transitions. Second operand 4 states. [2020-08-18 12:19:19,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:19:19,987 INFO L93 Difference]: Finished difference Result 9190 states and 13162 transitions. [2020-08-18 12:19:19,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 12:19:19,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-08-18 12:19:19,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:19:20,023 INFO L225 Difference]: With dead ends: 9190 [2020-08-18 12:19:20,023 INFO L226 Difference]: Without dead ends: 7424 [2020-08-18 12:19:20,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:19:20,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7424 states. [2020-08-18 12:19:20,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7424 to 3774. [2020-08-18 12:19:20,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3774 states. [2020-08-18 12:19:20,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3774 states to 3774 states and 5408 transitions. [2020-08-18 12:19:20,343 INFO L78 Accepts]: Start accepts. Automaton has 3774 states and 5408 transitions. Word has length 156 [2020-08-18 12:19:20,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:19:20,343 INFO L479 AbstractCegarLoop]: Abstraction has 3774 states and 5408 transitions. [2020-08-18 12:19:20,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 12:19:20,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3774 states and 5408 transitions. [2020-08-18 12:19:20,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-18 12:19:20,352 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:19:20,352 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] [2020-08-18 12:19:20,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 12:19:20,353 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:19:20,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:19:20,353 INFO L82 PathProgramCache]: Analyzing trace with hash -415240646, now seen corresponding path program 1 times [2020-08-18 12:19:20,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:19:20,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391718565] [2020-08-18 12:19:20,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:19:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:20,717 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-08-18 12:19:20,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:19:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:19:20,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:19:20,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391718565] [2020-08-18 12:19:20,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:19:20,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:19:20,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225889914] [2020-08-18 12:19:20,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:19:20,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:19:20,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:19:20,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:19:20,778 INFO L87 Difference]: Start difference. First operand 3774 states and 5408 transitions. Second operand 5 states. [2020-08-18 12:19:23,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:19:23,464 INFO L93 Difference]: Finished difference Result 10940 states and 15613 transitions. [2020-08-18 12:19:23,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 12:19:23,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-08-18 12:19:23,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:19:23,480 INFO L225 Difference]: With dead ends: 10940 [2020-08-18 12:19:23,480 INFO L226 Difference]: Without dead ends: 7213 [2020-08-18 12:19:23,490 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 [2020-08-18 12:19:23,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7213 states. [2020-08-18 12:19:23,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7213 to 7211. [2020-08-18 12:19:23,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7211 states. [2020-08-18 12:19:23,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7211 states to 7211 states and 10180 transitions. [2020-08-18 12:19:23,912 INFO L78 Accepts]: Start accepts. Automaton has 7211 states and 10180 transitions. Word has length 157 [2020-08-18 12:19:23,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:19:23,912 INFO L479 AbstractCegarLoop]: Abstraction has 7211 states and 10180 transitions. [2020-08-18 12:19:23,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:19:23,913 INFO L276 IsEmpty]: Start isEmpty. Operand 7211 states and 10180 transitions. [2020-08-18 12:19:23,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-18 12:19:23,925 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:19:23,925 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] [2020-08-18 12:19:23,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 12:19:23,925 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:19:23,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:19:23,926 INFO L82 PathProgramCache]: Analyzing trace with hash 725013288, now seen corresponding path program 1 times [2020-08-18 12:19:23,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:19:23,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750140341] [2020-08-18 12:19:23,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:19:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 12:19:24,003 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 12:19:24,004 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 12:19:24,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 12:19:24,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 12:19:24 BoogieIcfgContainer [2020-08-18 12:19:24,059 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 12:19:24,060 INFO L168 Benchmark]: Toolchain (without parser) took 35652.13 ms. Allocated memory was 143.1 MB in the beginning and 646.4 MB in the end (delta: 503.3 MB). Free memory was 104.8 MB in the beginning and 380.3 MB in the end (delta: -275.5 MB). Peak memory consumption was 227.8 MB. Max. memory is 7.1 GB. [2020-08-18 12:19:24,061 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 143.1 MB. Free memory was 124.6 MB in the beginning and 124.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 12:19:24,062 INFO L168 Benchmark]: CACSL2BoogieTranslator took 830.84 ms. Allocated memory was 143.1 MB in the beginning and 205.5 MB in the end (delta: 62.4 MB). Free memory was 104.6 MB in the beginning and 170.6 MB in the end (delta: -66.0 MB). Peak memory consumption was 33.8 MB. Max. memory is 7.1 GB. [2020-08-18 12:19:24,062 INFO L168 Benchmark]: Boogie Preprocessor took 93.73 ms. Allocated memory is still 205.5 MB. Free memory was 170.6 MB in the beginning and 166.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-08-18 12:19:24,063 INFO L168 Benchmark]: RCFGBuilder took 1488.82 ms. Allocated memory was 205.5 MB in the beginning and 233.3 MB in the end (delta: 27.8 MB). Free memory was 166.0 MB in the beginning and 134.7 MB in the end (delta: 31.3 MB). Peak memory consumption was 74.7 MB. Max. memory is 7.1 GB. [2020-08-18 12:19:24,064 INFO L168 Benchmark]: TraceAbstraction took 33232.68 ms. Allocated memory was 233.3 MB in the beginning and 646.4 MB in the end (delta: 413.1 MB). Free memory was 133.3 MB in the beginning and 380.3 MB in the end (delta: -246.9 MB). Peak memory consumption was 166.2 MB. Max. memory is 7.1 GB. [2020-08-18 12:19:24,067 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 143.1 MB. Free memory was 124.6 MB in the beginning and 124.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 830.84 ms. Allocated memory was 143.1 MB in the beginning and 205.5 MB in the end (delta: 62.4 MB). Free memory was 104.6 MB in the beginning and 170.6 MB in the end (delta: -66.0 MB). Peak memory consumption was 33.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.73 ms. Allocated memory is still 205.5 MB. Free memory was 170.6 MB in the beginning and 166.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1488.82 ms. Allocated memory was 205.5 MB in the beginning and 233.3 MB in the end (delta: 27.8 MB). Free memory was 166.0 MB in the beginning and 134.7 MB in the end (delta: 31.3 MB). Peak memory consumption was 74.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33232.68 ms. Allocated memory was 233.3 MB in the beginning and 646.4 MB in the end (delta: 413.1 MB). Free memory was 133.3 MB in the beginning and 380.3 MB in the end (delta: -246.9 MB). Peak memory consumption was 166.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 891]: 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_2419; [L75] int __tmp_2420_0; [L76] int __return_2543; [L77] int __return_2433; [L80] int main__c1; [L81] int main__i2; [L82] main__c1 = 0 [L83] ep12 = __VERIFIER_nondet_bool() [L84] ep13 = __VERIFIER_nondet_bool() [L85] ep21 = __VERIFIER_nondet_bool() [L86] ep23 = __VERIFIER_nondet_bool() [L87] ep31 = __VERIFIER_nondet_bool() [L88] ep32 = __VERIFIER_nondet_bool() [L89] id1 = __VERIFIER_nondet_char() [L90] r1 = __VERIFIER_nondet_char() [L91] st1 = __VERIFIER_nondet_char() [L92] nl1 = __VERIFIER_nondet_char() [L93] m1 = __VERIFIER_nondet_char() [L94] max1 = __VERIFIER_nondet_char() [L95] mode1 = __VERIFIER_nondet_bool() [L96] newmax1 = __VERIFIER_nondet_bool() [L97] id2 = __VERIFIER_nondet_char() [L98] r2 = __VERIFIER_nondet_char() [L99] st2 = __VERIFIER_nondet_char() [L100] nl2 = __VERIFIER_nondet_char() [L101] m2 = __VERIFIER_nondet_char() [L102] max2 = __VERIFIER_nondet_char() [L103] mode2 = __VERIFIER_nondet_bool() [L104] newmax2 = __VERIFIER_nondet_bool() [L105] id3 = __VERIFIER_nondet_char() [L106] r3 = __VERIFIER_nondet_char() [L107] st3 = __VERIFIER_nondet_char() [L108] nl3 = __VERIFIER_nondet_char() [L109] m3 = __VERIFIER_nondet_char() [L110] max3 = __VERIFIER_nondet_char() [L111] mode3 = __VERIFIER_nondet_bool() [L112] newmax3 = __VERIFIER_nondet_bool() [L114] _Bool init__r121; [L115] _Bool init__r131; [L116] _Bool init__r211; [L117] _Bool init__r231; [L118] _Bool init__r311; [L119] _Bool init__r321; [L120] _Bool init__r122; [L121] int init__tmp; [L122] _Bool init__r132; [L123] int init__tmp___0; [L124] _Bool init__r212; [L125] int init__tmp___1; [L126] _Bool init__r232; [L127] int init__tmp___2; [L128] _Bool init__r312; [L129] int init__tmp___3; [L130] _Bool init__r322; [L131] int init__tmp___4; [L132] int init__tmp___5; [L133] init__r121 = ep12 [L134] init__r131 = ep13 [L135] init__r211 = ep21 [L136] init__r231 = ep23 [L137] init__r311 = ep31 [L138] init__r321 = ep32 [L139] COND FALSE !(!(init__r121 == 0)) [L2433] COND FALSE !(!(init__r131 == 0)) [L2449] init__tmp = 0 [L143] init__r122 = (_Bool)init__tmp [L144] COND FALSE !(!(init__r131 == 0)) [L2410] COND FALSE !(!(init__r121 == 0)) [L2426] init__tmp___0 = 0 [L148] init__r132 = (_Bool)init__tmp___0 [L149] COND FALSE !(!(init__r211 == 0)) [L2387] COND FALSE !(!(init__r231 == 0)) [L2403] init__tmp___1 = 0 [L153] init__r212 = (_Bool)init__tmp___1 [L154] COND FALSE !(!(init__r231 == 0)) [L2364] COND FALSE !(!(init__r211 == 0)) [L2380] init__tmp___2 = 0 [L158] init__r232 = (_Bool)init__tmp___2 [L159] COND FALSE !(!(init__r311 == 0)) [L2341] COND FALSE !(!(init__r321 == 0)) [L2357] init__tmp___3 = 0 [L163] init__r312 = (_Bool)init__tmp___3 [L164] COND FALSE !(!(init__r321 == 0)) [L2318] COND FALSE !(!(init__r311 == 0)) [L2334] init__tmp___4 = 0 [L168] init__r322 = (_Bool)init__tmp___4 [L169] COND TRUE ((int)id1) != ((int)id2) [L171] COND TRUE ((int)id1) != ((int)id3) [L173] COND TRUE ((int)id2) != ((int)id3) [L175] COND TRUE ((int)id1) >= 0 [L177] COND TRUE ((int)id2) >= 0 [L179] COND TRUE ((int)id3) >= 0 [L181] COND TRUE ((int)r1) == 0 [L183] COND TRUE ((int)r2) == 0 [L185] COND TRUE ((int)r3) == 0 [L187] COND TRUE ((int)max1) == ((int)id1) [L189] COND TRUE ((int)max2) == ((int)id2) [L191] COND TRUE ((int)max3) == ((int)id3) [L193] COND TRUE ((int)st1) == 0 [L195] COND TRUE ((int)st2) == 0 [L197] COND TRUE ((int)st3) == 0 [L199] COND TRUE ((int)nl1) == 0 [L201] COND TRUE ((int)nl2) == 0 [L203] COND TRUE ((int)nl3) == 0 [L205] COND TRUE ((int)mode1) == 0 [L207] COND TRUE ((int)mode2) == 0 [L209] COND TRUE ((int)mode3) == 0 [L211] COND TRUE !(newmax1 == 0) [L213] COND TRUE !(newmax2 == 0) [L215] COND TRUE !(newmax3 == 0) [L217] init__tmp___5 = 1 [L218] __return_1863 = init__tmp___5 [L219] main__i2 = __return_1863 [L220] COND TRUE main__i2 != 0 [L222] p12_old = nomsg [L223] p12_new = nomsg [L224] p13_old = nomsg [L225] p13_new = nomsg [L226] p21_old = nomsg [L227] p21_new = nomsg [L228] p23_old = nomsg [L229] p23_new = nomsg [L230] p31_old = nomsg [L231] p31_new = nomsg [L232] p32_old = nomsg [L233] p32_new = nomsg [L234] main__i2 = 0 [L235] COND TRUE main__i2 < 6 [L238] _Bool node1__newmax; [L239] node1__newmax = 0 [L240] COND FALSE !(!(mode1 == 0)) [L246] COND TRUE ((int)r1) < 2 [L248] COND FALSE !(!(ep12 == 0)) [L261] COND FALSE !(!(ep13 == 0)) [L274] mode1 = 1 [L276] _Bool node2__newmax; [L277] node2__newmax = 0 [L278] COND FALSE !(!(mode2 == 0)) [L284] COND TRUE ((int)r2) < 2 [L286] COND FALSE !(!(ep21 == 0)) [L299] COND FALSE !(!(ep23 == 0)) [L312] mode2 = 1 [L314] _Bool node3__newmax; [L315] node3__newmax = 0 [L316] COND FALSE !(!(mode3 == 0)) [L322] COND TRUE ((int)r3) < 2 [L324] COND FALSE !(!(ep31 == 0)) [L337] COND FALSE !(!(ep32 == 0)) [L350] mode3 = 1 [L351] p12_old = p12_new [L352] p12_new = nomsg [L353] p13_old = p13_new [L354] p13_new = nomsg [L355] p21_old = p21_new [L356] p21_new = nomsg [L357] p23_old = p23_new [L358] p23_new = nomsg [L359] p31_old = p31_new [L360] p31_new = nomsg [L361] p32_old = p32_new [L362] p32_new = nomsg [L364] int check__tmp; [L365] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L367] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L369] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L371] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L373] COND FALSE !(((int)r1) >= 2) [L379] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L381] COND TRUE ((int)r1) < 2 [L383] COND FALSE !(((int)r1) >= 2) [L389] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L391] COND TRUE ((int)r1) < 2 [L393] check__tmp = 1 [L394] __return_2009 = check__tmp [L395] main__c1 = __return_2009 [L397] _Bool __tmp_1; [L398] __tmp_1 = main__c1 [L399] _Bool assert__arg; [L400] assert__arg = __tmp_1 [L401] COND FALSE !(assert__arg == 0) [L407] int main____CPAchecker_TMP_0 = main__i2; [L408] main__i2 = main__i2 + 1 [L409] COND TRUE main__i2 < 6 [L412] _Bool node1__newmax; [L413] node1__newmax = 0 [L414] COND TRUE !(mode1 == 0) [L416] r1 = (char)(((int)r1) + 1) [L417] COND FALSE !(!(ep21 == 0)) [L426] COND FALSE !(!(ep31 == 0)) [L435] newmax1 = node1__newmax [L436] COND FALSE !(((int)r1) == 2) [L442] mode1 = 0 [L444] _Bool node2__newmax; [L445] node2__newmax = 0 [L446] COND TRUE !(mode2 == 0) [L448] r2 = (char)(((int)r2) + 1) [L449] COND FALSE !(!(ep12 == 0)) [L458] COND FALSE !(!(ep32 == 0)) [L467] newmax2 = node2__newmax [L468] COND FALSE !(((int)r2) == 2) [L474] mode2 = 0 [L476] _Bool node3__newmax; [L477] node3__newmax = 0 [L478] COND TRUE !(mode3 == 0) [L480] r3 = (char)(((int)r3) + 1) [L481] COND FALSE !(!(ep13 == 0)) [L490] COND FALSE !(!(ep23 == 0)) [L499] newmax3 = node3__newmax [L500] COND FALSE !(((int)r3) == 2) [L506] mode3 = 0 [L507] p12_old = p12_new [L508] p12_new = nomsg [L509] p13_old = p13_new [L510] p13_new = nomsg [L511] p21_old = p21_new [L512] p21_new = nomsg [L513] p23_old = p23_new [L514] p23_new = nomsg [L515] p31_old = p31_new [L516] p31_new = nomsg [L517] p32_old = p32_new [L518] p32_new = nomsg [L520] int check__tmp; [L521] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L523] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L525] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L527] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L529] COND FALSE !(((int)r1) >= 2) [L535] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L537] COND TRUE ((int)r1) < 2 [L539] COND FALSE !(((int)r1) >= 2) [L545] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L547] COND TRUE ((int)r1) < 2 [L549] check__tmp = 1 [L550] __return_2142 = check__tmp [L551] main__c1 = __return_2142 [L553] _Bool __tmp_2; [L554] __tmp_2 = main__c1 [L555] _Bool assert__arg; [L556] assert__arg = __tmp_2 [L557] COND FALSE !(assert__arg == 0) [L563] int main____CPAchecker_TMP_0 = main__i2; [L564] main__i2 = main__i2 + 1 [L565] COND TRUE main__i2 < 6 [L568] _Bool node1__newmax; [L569] node1__newmax = 0 [L570] COND FALSE !(!(mode1 == 0)) [L576] COND TRUE ((int)r1) < 2 [L578] COND FALSE !(!(ep12 == 0)) [L591] COND FALSE !(!(ep13 == 0)) [L604] mode1 = 1 [L606] _Bool node2__newmax; [L607] node2__newmax = 0 [L608] COND FALSE !(!(mode2 == 0)) [L614] COND TRUE ((int)r2) < 2 [L616] COND FALSE !(!(ep21 == 0)) [L629] COND FALSE !(!(ep23 == 0)) [L642] mode2 = 1 [L644] _Bool node3__newmax; [L645] node3__newmax = 0 [L646] COND FALSE !(!(mode3 == 0)) [L652] COND TRUE ((int)r3) < 2 [L654] COND FALSE !(!(ep31 == 0)) [L667] COND FALSE !(!(ep32 == 0)) [L680] mode3 = 1 [L681] p12_old = p12_new [L682] p12_new = nomsg [L683] p13_old = p13_new [L684] p13_new = nomsg [L685] p21_old = p21_new [L686] p21_new = nomsg [L687] p23_old = p23_new [L688] p23_new = nomsg [L689] p31_old = p31_new [L690] p31_new = nomsg [L691] p32_old = p32_new [L692] p32_new = nomsg [L694] int check__tmp; [L695] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L697] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L699] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L701] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L703] COND FALSE !(((int)r1) >= 2) [L709] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L711] COND TRUE ((int)r1) < 2 [L713] COND FALSE !(((int)r1) >= 2) [L719] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L721] COND TRUE ((int)r1) < 2 [L723] check__tmp = 1 [L724] __return_2281 = check__tmp [L725] main__c1 = __return_2281 [L727] _Bool __tmp_3; [L728] __tmp_3 = main__c1 [L729] _Bool assert__arg; [L730] assert__arg = __tmp_3 [L731] COND FALSE !(assert__arg == 0) [L737] int main____CPAchecker_TMP_0 = main__i2; [L738] main__i2 = main__i2 + 1 [L739] COND TRUE main__i2 < 6 [L742] _Bool node1__newmax; [L743] node1__newmax = 0 [L744] COND TRUE !(mode1 == 0) [L746] r1 = (char)(((int)r1) + 1) [L747] COND FALSE !(!(ep21 == 0)) [L756] COND FALSE !(!(ep31 == 0)) [L765] newmax1 = node1__newmax [L766] COND TRUE ((int)r1) == 2 [L768] COND TRUE ((int)max1) == ((int)id1) [L770] st1 = 1 [L772] mode1 = 0 [L774] _Bool node2__newmax; [L775] node2__newmax = 0 [L776] COND TRUE !(mode2 == 0) [L778] r2 = (char)(((int)r2) + 1) [L779] COND FALSE !(!(ep12 == 0)) [L788] COND FALSE !(!(ep32 == 0)) [L797] newmax2 = node2__newmax [L798] COND TRUE ((int)r2) == 2 [L800] COND TRUE ((int)max2) == ((int)id2) [L802] st2 = 1 [L804] mode2 = 0 [L806] _Bool node3__newmax; [L807] node3__newmax = 0 [L808] COND TRUE !(mode3 == 0) [L810] r3 = (char)(((int)r3) + 1) [L811] COND FALSE !(!(ep13 == 0)) [L820] COND FALSE !(!(ep23 == 0)) [L829] newmax3 = node3__newmax [L830] COND TRUE ((int)r3) == 2 [L832] COND TRUE ((int)max3) == ((int)id3) [L834] st3 = 1 [L836] mode3 = 0 [L837] p12_old = p12_new [L838] p12_new = nomsg [L839] p13_old = p13_new [L840] p13_new = nomsg [L841] p21_old = p21_new [L842] p21_new = nomsg [L843] p23_old = p23_new [L844] p23_new = nomsg [L845] p31_old = p31_new [L846] p31_new = nomsg [L847] p32_old = p32_new [L848] p32_new = nomsg [L850] int check__tmp; [L851] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1533] check__tmp = 0 [L879] __return_2419 = check__tmp [L880] main__c1 = __return_2419 [L881] __tmp_2420_0 = main____CPAchecker_TMP_0 [L883] main____CPAchecker_TMP_0 = __tmp_2420_0 [L885] _Bool __tmp_4; [L886] __tmp_4 = main__c1 [L887] _Bool assert__arg; [L888] assert__arg = __tmp_4 [L889] COND TRUE assert__arg == 0 [L891] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 340 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.1s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 25.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7616 SDtfs, 7275 SDslu, 4541 SDs, 0 SdLazy, 8012 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7211occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 6824 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 1696 NumberOfCodeBlocks, 1696 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1529 ConstructedInterpolants, 0 QuantifiedInterpolants, 819795 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...